US3077569A - Surface wave launcher - Google Patents
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- US3077569A US3077569A US850742A US85074259A US3077569A US 3077569 A US3077569 A US 3077569A US 850742 A US850742 A US 850742A US 85074259 A US85074259 A US 85074259A US 3077569 A US3077569 A US 3077569A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/28—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/10—Wire waveguides, i.e. with a single solid longitudinal conductor
Definitions
- This invention relates to a waveguide and more particularly to an electromagnetic wave launcher which is capable of propagating surface waves along the boundaries of a current carrying wire mesh structure and materials of different electromagnetic properties.
- the electrical and mechanical features of the invention make it highly useful as a nonres-onant coupler of radio frequency power for feeding conventional surface wave transmission lines from conventional cables and as a nonresonant travelling wave antenna element.
- Wave launchers comprised of combinations of feeders, couplers, and antennas of various types have been used before in Iapplications t-o which this invention is adopted but have proved to be unsatisfactory in many respects.
- This invention provides a relatively'simple device to replace the combinations of elements previously used.
- electromagnetic waves can be propagated along surfaces where discontinuities of the electromagnetic properties of media exist; for example, along the plane or spherical boundaries between ground and air or water and air, along the cylindrical boundary surface of copper wire and air and specially designed surface transmission lines utilizing dielectric coated wire and air as media (G-strings), along dielectric rods, and along cylindrical holes in dielectric material.
- G-strings dielectric coated wire and air as media
- An object of this invention is to provide la unidirectional travelling wave antenna which physically incorporates feeder, coupler and radiating action into one element.
- a second object of this invention is to provide a nonresonant distributed coupling means -to a surface wave mode of electromagnetic energy from a conventional waveguide or transmission line mode of wave propagation.
- a further object of this invention is to provide a unidirectional travelling wave antenna whose physical length is less than that of conventional long wire antennas with similar directional characteristics.
- a preferred form of the invention consists of a coaxial arrangement of a cylindrical inner conductor electrically insulated from a cylindrical envelope or enclosure which contains an inner layer in the forni or a conductive mesh of closely spaced apertures and an outer layer of high permeability material of suitable thickness.
- the ends of the inner conductor and the inner layer of the envelope are connected to the inner and outer conductors, respectively, of a cable connector to permit feeding from a conventional cable and/or connection to the terminals of power generators and loads.
- Another embodiment of the invention is a flat, sandwich-shaped variation of the above description.
- FGURES 1 and 2 illustrate in diagrammatic form the basic principles of the invention
- FIGURES 3 and 3a illustrate the invention in coaxial form
- FIGURES 4 and 4a illustrate a planar version of the invention
- FIGURE Str shows the mesh apertures of the outer conductors
- FIGURE 5b graphically shows a single aperture for purpose of the lmathematical development.
- a braided or meshwire conductor )itl of the type commonly used in coaxial transmission lines as the outer conducting element ⁇ has a primary magnetic field Hp induced in the space beneath it by the wave travelling through the line.
- Leakage of primary iield Hp through the apertures li. into the originally ield-free space above the apertures il at high frequencies exceeds by far the leakage through the metal part of braid l@ and is represented by tield lines i2.
- the field thus formed in the space above the apertures can be considered to emanate from a fictitious magnetic and elec tric dipole, indicated lschematically in the apertures 11.
- the close proximity of apertures li and hence the close spacing of the tictitious dipoles located within the apertures lll results in a strong coupling between the fictitious dipoles to form the magnetic leakage r'icld ft2.
- the dipole concept explains the experimentally observed shape of the radiation pattern from a line constructed in this manner whose main lobes tend to emanate in the direction of the exciting travelling wave and which have the forward tilt of slow wave type radiation patterns.
- the length of the rneshwire lo has a direct effect on the sharpness of the lobes, i.e., the longer the cylindrical wire mesh, the sharper is the directivity of the lobes.
- FIGS. 5a and 5b show portions of the outer meshwire conductor.
- FIG. 5b serves as an analytical model ⁇ for computation of the surface EMF.
- the magnetic field Hy above lsuch apertures ie. the tield perpendicular to the plane of the aperture shown in the drawing.
- Hy Hy-l-Hy" (l) where Hy is the total held above the mesh, Hy is the eld contributed by the current z" flowing in wires 25', and I y" is the field contributed by the current i" in wires 35.
- Hy Hy-l-Hy" (l) where Hy is the total held above the mesh, Hy is the eld contributed by the current z" flowing in wires 25', and I y" is the field contributed by the current i" in wires 35.
- Equation 1 the total magnetic field Hy in the plane of the mesh or where g is the distance between the outside surfaces of adjacent parallel conductors in the braid.
- Equation l The magnetic iield Hy found by means of Equation l() has been well confirmed experimentally thereby showing the practical Validity of the mathematical approach which led to the development of the practical, operative device to be described in conjunction with FIGURES 2, 3, ⁇ and 4.
- the magnetic iield Hy of Equation l0 is designated as magnetic leakage ield 12 in FIGURES l and 2.
- a ring voltage is linked to the leakage iiux described above such that an electric eld is produced parallel to the resultant current ilow through the meshwire conductor.
- the mean electric field strength in the plane of each mesh aperture is equivalent to an per unit length along the surface of the meshwire structure, This EME. per unit length is directly proportional to the primary magnetic field Hp or what is equivalent to the current i in the meshwires, and its phase Velocity equals the phase velecity of the primary field.
- the meshwire 1t is covered with a sheet of material 13, as shown in FIG. 2, having a high permeability constant (low reluctance), negligihle conductivity ⁇ and negligible hysteresis loss
- the magnetic leakage iiux 12 through the apertures lll will tend to be confined within the highpermeability material 13 and will not stray into the outside space which has a higher reluctance.
- the density of the magnetic iield l2 is greatly increased in cover sheet 13 as a result.
- the high permeability cover sheet 13 acts as a shunt or keeper for the fictitious dipoles in much the same manneras a keeper for a permanent magnet.
- the meshwire conductor l@ and high permeability cover sheet 13 of proper thickness in effect act as a transformer to couple energy (e.g., a TEM mode) from below the meshwire conductor 1li to the region just above the meshwire conductor it) within cover sheet i3 where the energy is propagated in the form of a surface wave.
- energy e.g., a TEM mode
- the high concentration of magnetic energy within cover sheet i3 will increase the per unit length along lthe surface of meshwire conductor l0 to a value considerably higher than that obtained from the device of FIG, 1.
- the guided surface wave thus formed is in a non-radiating mode tightly coupled to the wave beneath meshwire conductor lit.
- the degree of this coupling and character of the surface wave is controlled by the size and spacing of apertures il and by the thickness and permeability of cover sheet I3.
- Conversion of the non-radiating surface wave to a radiating mode can then be accomplished by feeding the wave into a discontinuity at the end of a surface wave launcher of the type shown in FlG. 2. This will cause a disruption of the intimate coupling between the surface wave and inner wave thereby resulting in the generation of a radiating mode which is reected back and forth between the ends of the launcher in a standing wave pattern being set up by the radiating modes such that there is a net energy flow from the input end to the load or terminal end of the wave launcher. This explains the directivity of the radiation pattern and the proportionality of its sharpness with the length of the launcher.
- FIGS. 3 and 3a A preferred form of a surface wave launcher according to the invention is shown in FIGS. 3 and 3a and consists of a coaxial arrangement of a cylindrical inner conductor 14 surrounded by a dielectric material l5' having ⁇ a proper dielectric constant which insulates conductor M from an envelope comprised or" an inner meshwire conductor i6 With a thin outer coating l? of a material having high permeability (ferrite for instance).
- a suitable source of high frequency power is connected to one end of conductors 14 and 16 and the other end of the surface wave launcher could be utilized for launching surface waves along a wire (Gf-string) or other suitable loads.
- ⁇ Construction ⁇ of this coaxial surface wave launcher in a conical shape will sharpen the radiation pattern considerably. Operation of the embodiment shown in IFIGS. 3 and 3a is otherwise the saine as described in conjunction with FIG. 2.
- FIGS. 4 and 4a show a planar or sandwich version of the surface wave launcher described in FIGS. 2, 3 and 3a.
- a thin planar conductor 18 is sandwiched between two layers of insulating material 19 each of which are in turn covered by a meshwire or braided conductor 20.
- the braided conductors 20 are then each covered with a sheet 21 of material having a high permeability.
- This form of the invention is particularly useful for the excitation of surface waves along ice and ⁇ air or water and air boundaries.
- the high permeability cover sheet may be made of ferrite and could be applied to the coaxial version of the invention by winding ferrite tape around the outer meshwire conductor of the cable, for example.
- a surface wave launcher comprising a rst conducting means, a second conducting means of relatively open meshwire construction having two surfaces, insulating means separating said first conducting means and one surface of said second conducting means, and a high magnetic permeability cover sheet substantially covering the other surface of said second conducting means.
- a surface wave launcher according to claim 1 wherein said insulation means has a dielectric constant which matches the phase velocity of the primary eld within said insulation means to 4the surface wave phase velocity.
- An electromagnetic wave launcher comprising a pair of planar relatively open meshwire conductors arranged in parallel spaced relation with respect to one another, insulation means, a solid plane conductive sheet between said meshwire conductors and separated from each of said meshwire conductors by said insulation means, and a high magnetic permeability cover sheet substantially cov ering each of said meshwire conductors on the side remote from said insulation means.
- a microwave antenna ⁇ comprising inner and outer conducting elements arranged in coaxial relationship and separated by suitable insulating means, said outer con ducting element having a plurality of closely spaced apertures therein, and a. cylindrically shaped enclosure of material having a high magnetic permeability encasing said coaxial conducting elements and arranged in contact with said outer conducting element.
Description
Feb. 12, 1963 K. IKRATH 3,077,569
SURFACE WAVE LAUNCHER Filed Nov. 5, 1959 FIELD FICTiTIOUS MAG. DIPOLES INVENTOR, KURT IKRATH ...Wx/5. a.
ATTORNEY.
United States Patent @dice $77,559 Patented Feb. l2, 1963 3,677,569 SURFACE WAVE LAUNCHER Kurt llirrath, 2*5 l-irhiand Ave., Elheron, Nil., assigner to the United States of America as represented by the Secretary oit the Army Filed Nov. 3, 1959, der. No. @563,742 5 Qlairns. (Cl. 33E- 95) (Granted under Title 35, U.S. Code (1952), sec. Zoon The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of any royalty thereon.
This invention relates to a waveguide and more particularly to an electromagnetic wave launcher which is capable of propagating surface waves along the boundaries of a current carrying wire mesh structure and materials of different electromagnetic properties. n
The electrical and mechanical features of the invention make it highly useful as a nonres-onant coupler of radio frequency power for feeding conventional surface wave transmission lines from conventional cables and as a nonresonant travelling wave antenna element.
Wave launchers comprised of combinations of feeders, couplers, and antennas of various types have been used before in Iapplications t-o which this invention is adopted but have proved to be unsatisfactory in many respects. This invention provides a relatively'simple device to replace the combinations of elements previously used.
It is well known that electromagnetic waves can be propagated along surfaces where discontinuities of the electromagnetic properties of media exist; for example, along the plane or spherical boundaries between ground and air or water and air, along the cylindrical boundary surface of copper wire and air and specially designed surface transmission lines utilizing dielectric coated wire and air as media (G-strings), along dielectric rods, and along cylindrical holes in dielectric material. These surface wave modes of propagation prior to applicants invention were excited by conventional methods with dipoles, probes, and open-ended waveguides such as horns and various combinations thereof.
intimately linked with guided wave phenomena is radiation from the guided surface wave, i.e., the breaking away into space of electromagnetic energy from the guiding structures as a result of discontinuities on the structure ofthe guide. Such a structure then becomes a travelling wave radiator and is known as a travelling wave wire antenna or dielectric antenna. These radiators have the common property that they produce highly directional multi or single lobe radiation patterns such that their directivity is proportional to their length, a distinctive characteristic of this type of antenna. Although these antennas are inherently nonresonant wide band devices, in prac ice bandwidth limitations are caused by the conventional feeder and coupler systems. 1
An object of this invention is to provide la unidirectional travelling wave antenna which physically incorporates feeder, coupler and radiating action into one element.
A second object of this invention is to provide a nonresonant distributed coupling means -to a surface wave mode of electromagnetic energy from a conventional waveguide or transmission line mode of wave propagation.
A further object of this invention is to provide a unidirectional travelling wave antenna whose physical length is less than that of conventional long wire antennas with similar directional characteristics.
A preferred form of the invention consists of a coaxial arrangement of a cylindrical inner conductor electrically insulated from a cylindrical envelope or enclosure which contains an inner layer in the forni or a conductive mesh of closely spaced apertures and an outer layer of high permeability material of suitable thickness. The ends of the inner conductor and the inner layer of the envelope, in actual use of the invention, are connected to the inner and outer conductors, respectively, of a cable connector to permit feeding from a conventional cable and/or connection to the terminals of power generators and loads.
Another embodiment of the invention is a flat, sandwich-shaped variation of the above description.
Further objects and advantages of the invention will be apparent from the following description taken in connection with the drawing, wherein:
FGURES 1 and 2 illustrate in diagrammatic form the basic principles of the invention;
FIGURES 3 and 3a illustrate the invention in coaxial form;
FIGURES 4 and 4a illustrate a planar version of the invention;
FIGURE Str shows the mesh apertures of the outer conductors; and
FIGURE 5b graphically shows a single aperture for purpose of the lmathematical development.
The same reference numbers are used to represent the same or similar elements throughout the iigures Iof the drawing.
Referring to FIG. l of the drawing, a braided or meshwire conductor )itl of the type commonly used in coaxial transmission lines as the outer conducting element `has a primary magnetic field Hp induced in the space beneath it by the wave travelling through the line. Leakage of primary iield Hp through the apertures li. into the originally ield-free space above the apertures il at high frequencies exceeds by far the leakage through the metal part of braid l@ and is represented by tield lines i2. The field thus formed in the space above the apertures can be considered to emanate from a fictitious magnetic and elec tric dipole, indicated lschematically in the apertures 11. The close proximity of apertures li and hence the close spacing of the tictitious dipoles located within the apertures lll results in a strong coupling between the fictitious dipoles to form the magnetic leakage r'icld ft2. The dipole concept explains the experimentally observed shape of the radiation pattern from a line constructed in this manner whose main lobes tend to emanate in the direction of the exciting travelling wave and which have the forward tilt of slow wave type radiation patterns. The length of the rneshwire lo has a direct effect on the sharpness of the lobes, i.e., the longer the cylindrical wire mesh, the sharper is the directivity of the lobes.
ri`he mathematical development of this dipole concept will be described in conjunction with FIGS. 5a and 5b which show portions of the outer meshwire conductor. FIG. 5b serves as an analytical model `for computation of the surface EMF. The magnetic field Hy above lsuch apertures (ie. the tield perpendicular to the plane of the aperture shown in the drawing) is represented by the equation:
Hy=Hy-l-Hy" (l) where Hy is the total held above the mesh, Hy is the eld contributed by the current z" flowing in wires 25', and I y" is the field contributed by the current i" in wires 35. Each individual field coniiguration can be represented in ter-ms of the dimensions of the braid as shown in the following equation for Hy:
where z" is the current flowing in wires Z5 of the braided conductor, n is lthe number of meshes or apertures, a is the distance between the axes of wires 25, and 5 is the aeration distance along the g axis of the oblique X, g, 7;, coordinate system from the origin to wire 25. Carrying out the summation of Equation where i" is the current ilowing in wires 35 and i; is the distance along the axis of coordinate system X, 5, 17, from the origin to wire 35.
Adding Equations 3 and 4 according to Equation 1 the total magnetic field Hy in the plane of the mesh or where g is the distance between the outside surfaces of adjacent parallel conductors in the braid.
The relationship shown in Equation is true for the following validity conditions:
(1) Stationary D.C. like behavior of the wire braid currents is assumed.
(2) Magnetic field distortions at the braid wire crossings are neglected.
(3) The portion of the braid under consideration is considered at and the number of meshes or apertures in this portion is assumed to be large (ne oo).
Choosing the X and Z coordinates to be the diagonals of a diamond shaped aperture as shown in FIG. 5b, the magnitudes of E and v; can be mathematically expressed in terms of X, Z, and a so that X Z -2 cos a-2 sin a (8) and X Z 712 cos et+-2 sin (9) The magnetic iield Hy found by means of Equation l() has been well confirmed experimentally thereby showing the practical Validity of the mathematical approach which led to the development of the practical, operative device to be described in conjunction with FIGURES 2, 3, `and 4. The magnetic iield Hy of Equation l0 is designated as magnetic leakage ield 12 in FIGURES l and 2.
According to Faradays law, a ring voltage is linked to the leakage iiux described above such that an electric eld is produced parallel to the resultant current ilow through the meshwire conductor. The mean electric field strength in the plane of each mesh aperture is equivalent to an per unit length along the surface of the meshwire structure, This EME. per unit length is directly proportional to the primary magnetic field Hp or what is equivalent to the current i in the meshwires, and its phase Velocity equals the phase velecity of the primary field. The EMP. -thus produced excites and supports a surface wave on the surface of the meshwire conductor lo at high frequencies and is linked to the magnetic leakage ux leaking through the apertures il so that the meshwire surface per unit length increases with increased 'frequency of the input wave. This increase ofthe surface EMF. per unit length causes a corresponding increase of the ratio or" the radial to the longitudinal field energy iiow in the vicinity of the meshwire, t-h-at is, a trend from wave guidance to wave radiation of the slow wave type previously discussed.
According to the invention, if the meshwire 1t) is covered with a sheet of material 13, as shown in FIG. 2, having a high permeability constant (low reluctance), negligihle conductivity `and negligible hysteresis loss, the magnetic leakage iiux 12 through the apertures lll will tend to be confined within the highpermeability material 13 and will not stray into the outside space which has a higher reluctance. The density of the magnetic iield l2 is greatly increased in cover sheet 13 as a result. Referring again to the .fictitious dipole conception, it can be said that the high permeability cover sheet 13 acts as a shunt or keeper for the fictitious dipoles in much the same manneras a keeper for a permanent magnet. y
The meshwire conductor l@ and high permeability cover sheet 13 of proper thickness, in effect act as a transformer to couple energy (e.g., a TEM mode) from below the meshwire conductor 1li to the region just above the meshwire conductor it) within cover sheet i3 where the energy is propagated in the form of a surface wave. The high concentration of magnetic energy within cover sheet i3 will increase the per unit length along lthe surface of meshwire conductor l0 to a value considerably higher than that obtained from the device of FIG, 1. The guided surface wave thus formed is in a non-radiating mode tightly coupled to the wave beneath meshwire conductor lit. The degree of this coupling and character of the surface wave is controlled by the size and spacing of apertures il and by the thickness and permeability of cover sheet I3.
Conversion of the non-radiating surface wave to a radiating mode can then be accomplished by feeding the wave into a discontinuity at the end of a surface wave launcher of the type shown in FlG. 2. This will cause a disruption of the intimate coupling between the surface wave and inner wave thereby resulting in the generation of a radiating mode which is reected back and forth between the ends of the launcher in a standing wave pattern being set up by the radiating modes such that there is a net energy flow from the input end to the load or terminal end of the wave launcher. This explains the directivity of the radiation pattern and the proportionality of its sharpness with the length of the launcher.
A preferred form of a surface wave launcher according to the invention is shown in FIGS. 3 and 3a and consists of a coaxial arrangement of a cylindrical inner conductor 14 surrounded by a dielectric material l5' having `a proper dielectric constant which insulates conductor M from an envelope comprised or" an inner meshwire conductor i6 With a thin outer coating l? of a material having high permeability (ferrite for instance). In actual use, a suitable source of high frequency power is connected to one end of conductors 14 and 16 and the other end of the surface wave launcher could be utilized for launching surface waves along a wire (Gf-string) or other suitable loads. `Construction `of this coaxial surface wave launcher in a conical shape will sharpen the radiation pattern considerably. Operation of the embodiment shown in IFIGS. 3 and 3a is otherwise the saine as described in conjunction with FIG. 2.
FIGS. 4 and 4a show a planar or sandwich version of the surface wave launcher described in FIGS. 2, 3 and 3a. In this version a thin planar conductor 18 is sandwiched between two layers of insulating material 19 each of which are in turn covered by a meshwire or braided conductor 20. The braided conductors 20 are then each covered with a sheet 21 of material having a high permeability. This form of the invention is particularly useful for the excitation of surface waves along ice and `air or water and air boundaries.
The high permeability cover sheet may be made of ferrite and could be applied to the coaxial version of the invention by winding ferrite tape around the outer meshwire conductor of the cable, for example.
While the invention has been described with reference to particular embodiments, various other specific embodiments may suggest themselves to those skilled in the art without departing from the spirit and scope of the invention. Therefore, the present embodiments are to be considered illustrative only with reference being had to the appended claims to indicate the true scope of the invention.
What is claimed is:
1. A surface wave launcher comprising a rst conducting means, a second conducting means of relatively open meshwire construction having two surfaces, insulating means separating said first conducting means and one surface of said second conducting means, and a high magnetic permeability cover sheet substantially covering the other surface of said second conducting means.
2. A surface wave launcher according to claim 1 wherein said insulation means has a dielectric constant which matches the phase velocity of the primary eld within said insulation means to 4the surface wave phase velocity.
3. An electromagnetic wave launcher comprising a pair of planar relatively open meshwire conductors arranged in parallel spaced relation with respect to one another, insulation means, a solid plane conductive sheet between said meshwire conductors and separated from each of said meshwire conductors by said insulation means, and a high magnetic permeability cover sheet substantially cov ering each of said meshwire conductors on the side remote from said insulation means.
4. A microwave antenna` comprising inner and outer conducting elements arranged in coaxial relationship and separated by suitable insulating means, said outer con ducting element having a plurality of closely spaced apertures therein, and a. cylindrically shaped enclosure of material having a high magnetic permeability encasing said coaxial conducting elements and arranged in contact with said outer conducting element.
5. The apparatus of claim 4 wherein said inner and outer conducting elements are adapted to be connected -to a suitable source of high frequency power and where said insulating material has a dielectric constant which matches the phase velocity of the primary eld within said insulating means to the phase velocity of a surface wave excited in said high magnetic permeability enclosure.
References Cited in the file of this patent UNITED STATES PATENTS 563,274 Guilleaume July 7, 1896 2,018,353 Gothe Oct. 22, 1935 2,111,651 Wentz Mar. 22, 1938 2,894,226 Wild July 7, 1959 2,913,515 Ebel Nov. 17, 1959 2,915,719 Larsen Dec. l, 1959 2,929,034 Doherty Mar. 15, 1960 2,938,943 Horn May 3l, 1960 2,994,050 Ayer July 25, 1961 FOREIGN PATENTS 633,190 Great Britain Dec. 12, 1949 OTHER REFERENCES Rotman: A Study Guides, published in Proceedings of the IRE., vol 39, Issue 8, pages 952-959, August 1951.
Goubau: Surface Waves Lines, published in Journal of Applied Physics, November 1950, pages 111,94 1128, volv 2 1,No,11,
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,077 ,569 February 12g 1963 Kurt Ikrath It s hereby Certified that ervror appears n the above numbered patent requiring Correction and that the said Letters Patent should read as corrected below.
Column 3, lines 8 and 9 e uation (4) should a ea shown below lnstead of as in'tlnaI patent: pp P as Signed and sealed this 22nd day of October 1963 (SEAL) Attest:
EDWIN L., REYNOLDS ERNEST W. SWIDER ttesting Officer AC ting Commissioner of Patents UNITED STATES PATENT oEETCE CERTIFICATE OF CORRECTION Patent No. 3,077 ,569 February 12, 1963 Kurt Ikrath It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 3, lin-es 8 and 9 e uation y(4l) should a ea shown below instead of as in'tlneI patent: pp r as Signed and sealed this 22nd dey of October 1963.
(SEAL) Attest:
EDWIN L REYNOLDS ERNEST W. SWIDER Attesting Officer Acting Commissioner of Patents
Claims (1)
1. A SURFACE WAVE LAUNCHER COMPRISING A FIRST CONDUCTING MEANS, A SECOND CONDUCTING MEANS OF RELATIVELY OPEN MESHWIRE CONSTRUCTION HAVING TWO SURFACES, INSULATING MEANS SEPARATING SAID FIRST CONDUCTING MEANS AND ONE SURFACE OF SAID SECOND CONDUCTING MEANS, AND A HIGH MAGNETIC PERMEABILITY COVER SHEET SUBSTANTIALLY COVERING THE OTHER SURFACE OF SAID SECOND CONDUCTING MEANS.
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US850742A US3077569A (en) | 1959-11-03 | 1959-11-03 | Surface wave launcher |
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US3541567A (en) * | 1967-09-25 | 1970-11-17 | Richard J Francis | Multielement radio-frequency antenna structure having linearly arranged elements |
US3691488A (en) * | 1970-09-14 | 1972-09-12 | Andrew Corp | Radiating coaxial cable and method of manufacture thereof |
US3870977A (en) * | 1973-09-25 | 1975-03-11 | Times Wire And Cable Companay | Radiating coaxial cable |
US3944326A (en) * | 1972-10-17 | 1976-03-16 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | Waveguide |
US3949329A (en) * | 1973-02-13 | 1976-04-06 | Coal Industry (Patents) Ltd. | Radiating transmission lines |
US4581291A (en) * | 1983-12-29 | 1986-04-08 | Bongianni Wayne L | Microminiature coaxial cable and methods manufacture |
US4816618A (en) * | 1983-12-29 | 1989-03-28 | University Of California | Microminiature coaxial cable and method of manufacture |
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US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9762289B2 (en) | 2014-10-14 | 2017-09-12 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting or receiving signals in a transportation system |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9793951B2 (en) | 2015-07-15 | 2017-10-17 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9912419B1 (en) | 2016-08-24 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for managing a fault in a distributed antenna system |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9930668B2 (en) | 2013-05-31 | 2018-03-27 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9948354B2 (en) | 2015-04-28 | 2018-04-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device with reflective plate and methods for use therewith |
US9948355B2 (en) | 2014-10-21 | 2018-04-17 | At&T Intellectual Property I, L.P. | Apparatus for providing communication services and methods thereof |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10009065B2 (en) | 2012-12-05 | 2018-06-26 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10009063B2 (en) | 2015-09-16 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10027398B2 (en) | 2015-06-11 | 2018-07-17 | At&T Intellectual Property I, Lp | Repeater and methods for use therewith |
US10033108B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference |
US10033107B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US20180241113A1 (en) * | 2017-02-23 | 2018-08-23 | Intel Corporation | Single wire communication cable assembly |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10079661B2 (en) | 2015-09-16 | 2018-09-18 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a clock reference |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10103801B2 (en) | 2015-06-03 | 2018-10-16 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10135146B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via circuits |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US10136434B2 (en) | 2015-09-16 | 2018-11-20 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10142086B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US10144036B2 (en) | 2015-01-30 | 2018-12-04 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10170840B2 (en) | 2015-07-14 | 2019-01-01 | At&T Intellectual Property I, L.P. | Apparatus and methods for sending or receiving electromagnetic signals |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10291311B2 (en) | 2016-09-09 | 2019-05-14 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating a fault in a distributed antenna system |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10320586B2 (en) | 2015-07-14 | 2019-06-11 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US10341142B2 (en) | 2015-07-14 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor |
US10340600B2 (en) | 2016-10-18 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via plural waveguide systems |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
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US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
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US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10553960B2 (en) | 2017-10-26 | 2020-02-04 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and methods for use therewith |
US10553959B2 (en) | 2017-10-26 | 2020-02-04 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and directors and methods for use therewith |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
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US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US10665942B2 (en) | 2015-10-16 | 2020-05-26 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting wireless communications |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10714824B2 (en) | 2018-03-26 | 2020-07-14 | At&T Intellectual Property I, L.P. | Planar surface wave launcher and methods for use therewith |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US563274A (en) * | 1896-07-07 | Theodore gtjilleaume | ||
US2018353A (en) * | 1930-11-21 | 1935-10-22 | Telefunken Gmbh | Transmission line |
US2111651A (en) * | 1936-08-13 | 1938-03-22 | Bell Telephone Labor Inc | High-frequency transmission system |
GB633190A (en) * | 1947-12-31 | 1949-12-12 | Osbert Linn Ratsey | Improvements in screened electric cables |
US2894226A (en) * | 1954-06-04 | 1959-07-07 | Siemens Ag | Symmetrical cables, more particularly coaxial or symmetrical plane cables for transmission of high frequency current |
US2913515A (en) * | 1956-02-15 | 1959-11-17 | Anaconda Wire & Cable Co | Shielded polyethylene insulated electric conductor |
US2915719A (en) * | 1954-03-04 | 1959-12-01 | Siemens Ag | Junction and terminal device for laminated high-frequency conductors |
US2929034A (en) * | 1953-04-29 | 1960-03-15 | Bell Telephone Labor Inc | Magnetic transmission systems |
US2938943A (en) * | 1954-11-26 | 1960-05-31 | Felten & Guilleaume Carlswerk | Electrical cable for heavy currents |
US2994050A (en) * | 1959-04-10 | 1961-07-25 | Sanders Associates Inc | High frequency transmission line |
-
1959
- 1959-11-03 US US850742A patent/US3077569A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US563274A (en) * | 1896-07-07 | Theodore gtjilleaume | ||
US2018353A (en) * | 1930-11-21 | 1935-10-22 | Telefunken Gmbh | Transmission line |
US2111651A (en) * | 1936-08-13 | 1938-03-22 | Bell Telephone Labor Inc | High-frequency transmission system |
GB633190A (en) * | 1947-12-31 | 1949-12-12 | Osbert Linn Ratsey | Improvements in screened electric cables |
US2929034A (en) * | 1953-04-29 | 1960-03-15 | Bell Telephone Labor Inc | Magnetic transmission systems |
US2915719A (en) * | 1954-03-04 | 1959-12-01 | Siemens Ag | Junction and terminal device for laminated high-frequency conductors |
US2894226A (en) * | 1954-06-04 | 1959-07-07 | Siemens Ag | Symmetrical cables, more particularly coaxial or symmetrical plane cables for transmission of high frequency current |
US2938943A (en) * | 1954-11-26 | 1960-05-31 | Felten & Guilleaume Carlswerk | Electrical cable for heavy currents |
US2913515A (en) * | 1956-02-15 | 1959-11-17 | Anaconda Wire & Cable Co | Shielded polyethylene insulated electric conductor |
US2994050A (en) * | 1959-04-10 | 1961-07-25 | Sanders Associates Inc | High frequency transmission line |
Cited By (189)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3219954A (en) * | 1957-05-31 | 1965-11-23 | Giovanni P Rutelli | Surface wave transmission system for telecommunication and power transmission |
US3541567A (en) * | 1967-09-25 | 1970-11-17 | Richard J Francis | Multielement radio-frequency antenna structure having linearly arranged elements |
US3691488A (en) * | 1970-09-14 | 1972-09-12 | Andrew Corp | Radiating coaxial cable and method of manufacture thereof |
US3944326A (en) * | 1972-10-17 | 1976-03-16 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. | Waveguide |
US3949329A (en) * | 1973-02-13 | 1976-04-06 | Coal Industry (Patents) Ltd. | Radiating transmission lines |
US3870977A (en) * | 1973-09-25 | 1975-03-11 | Times Wire And Cable Companay | Radiating coaxial cable |
US4581291A (en) * | 1983-12-29 | 1986-04-08 | Bongianni Wayne L | Microminiature coaxial cable and methods manufacture |
US4816618A (en) * | 1983-12-29 | 1989-03-28 | University Of California | Microminiature coaxial cable and method of manufacture |
US9699785B2 (en) | 2012-12-05 | 2017-07-04 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US9788326B2 (en) | 2012-12-05 | 2017-10-10 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10194437B2 (en) | 2012-12-05 | 2019-01-29 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US10009065B2 (en) | 2012-12-05 | 2018-06-26 | At&T Intellectual Property I, L.P. | Backhaul link for distributed antenna system |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9930668B2 (en) | 2013-05-31 | 2018-03-27 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10091787B2 (en) | 2013-05-31 | 2018-10-02 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9692101B2 (en) | 2014-08-26 | 2017-06-27 | At&T Intellectual Property I, L.P. | Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire |
US10096881B2 (en) | 2014-08-26 | 2018-10-09 | At&T Intellectual Property I, L.P. | Guided wave couplers for coupling electromagnetic waves to an outer surface of a transmission medium |
US9768833B2 (en) | 2014-09-15 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US10063280B2 (en) | 2014-09-17 | 2018-08-28 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9615269B2 (en) | 2014-10-02 | 2017-04-04 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9998932B2 (en) | 2014-10-02 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9973299B2 (en) | 2014-10-14 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9762289B2 (en) | 2014-10-14 | 2017-09-12 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting or receiving signals in a transportation system |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9780834B2 (en) | 2014-10-21 | 2017-10-03 | At&T Intellectual Property I, L.P. | Method and apparatus for transmitting electromagnetic waves |
US9948355B2 (en) | 2014-10-21 | 2018-04-17 | At&T Intellectual Property I, L.P. | Apparatus for providing communication services and methods thereof |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9876587B2 (en) | 2014-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9960808B2 (en) | 2014-10-21 | 2018-05-01 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US9749083B2 (en) | 2014-11-20 | 2017-08-29 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9742462B2 (en) | 2014-12-04 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission medium and communication interfaces and methods for use therewith |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10144036B2 (en) | 2015-01-30 | 2018-12-04 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US10224981B2 (en) | 2015-04-24 | 2019-03-05 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9831912B2 (en) | 2015-04-24 | 2017-11-28 | At&T Intellectual Property I, Lp | Directional coupling device and methods for use therewith |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9948354B2 (en) | 2015-04-28 | 2018-04-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device with reflective plate and methods for use therewith |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9967002B2 (en) | 2015-06-03 | 2018-05-08 | At&T Intellectual I, Lp | Network termination and methods for use therewith |
US10050697B2 (en) | 2015-06-03 | 2018-08-14 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US10103801B2 (en) | 2015-06-03 | 2018-10-16 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9935703B2 (en) | 2015-06-03 | 2018-04-03 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9912382B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US10812174B2 (en) | 2015-06-03 | 2020-10-20 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US10142010B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US10027398B2 (en) | 2015-06-11 | 2018-07-17 | At&T Intellectual Property I, Lp | Repeater and methods for use therewith |
US10142086B2 (en) | 2015-06-11 | 2018-11-27 | At&T Intellectual Property I, L.P. | Repeater and methods for use therewith |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9667317B2 (en) | 2015-06-15 | 2017-05-30 | At&T Intellectual Property I, L.P. | Method and apparatus for providing security using network traffic adjustments |
US9882657B2 (en) | 2015-06-25 | 2018-01-30 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9640850B2 (en) | 2015-06-25 | 2017-05-02 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9853342B2 (en) | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10170840B2 (en) | 2015-07-14 | 2019-01-01 | At&T Intellectual Property I, L.P. | Apparatus and methods for sending or receiving electromagnetic signals |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US9628116B2 (en) | 2015-07-14 | 2017-04-18 | At&T Intellectual Property I, L.P. | Apparatus and methods for transmitting wireless signals |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US9722318B2 (en) | 2015-07-14 | 2017-08-01 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10033107B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US10033108B2 (en) | 2015-07-14 | 2018-07-24 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US10341142B2 (en) | 2015-07-14 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor |
US10320586B2 (en) | 2015-07-14 | 2019-06-11 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US9793951B2 (en) | 2015-07-15 | 2017-10-17 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9608740B2 (en) | 2015-07-15 | 2017-03-28 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9806818B2 (en) | 2015-07-23 | 2017-10-31 | At&T Intellectual Property I, Lp | Node device, repeater and methods for use therewith |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US10074886B2 (en) | 2015-07-23 | 2018-09-11 | At&T Intellectual Property I, L.P. | Dielectric transmission medium comprising a plurality of rigid dielectric members coupled together in a ball and socket configuration |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US10009063B2 (en) | 2015-09-16 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal |
US10079661B2 (en) | 2015-09-16 | 2018-09-18 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a clock reference |
US10136434B2 (en) | 2015-09-16 | 2018-11-20 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US10665942B2 (en) | 2015-10-16 | 2020-05-26 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting wireless communications |
US9912419B1 (en) | 2016-08-24 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for managing a fault in a distributed antenna system |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US10291311B2 (en) | 2016-09-09 | 2019-05-14 | At&T Intellectual Property I, L.P. | Method and apparatus for mitigating a fault in a distributed antenna system |
US11032819B2 (en) | 2016-09-15 | 2021-06-08 | At&T Intellectual Property I, L.P. | Method and apparatus for use with a radio distributed antenna system having a control channel reference signal |
US10135147B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via an antenna |
US10135146B2 (en) | 2016-10-18 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via circuits |
US10340600B2 (en) | 2016-10-18 | 2019-07-02 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching guided waves via plural waveguide systems |
US10374316B2 (en) | 2016-10-21 | 2019-08-06 | At&T Intellectual Property I, L.P. | System and dielectric antenna with non-uniform dielectric |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US9991580B2 (en) | 2016-10-21 | 2018-06-05 | At&T Intellectual Property I, L.P. | Launcher and coupling system for guided wave mode cancellation |
US9876605B1 (en) | 2016-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Launcher and coupling system to support desired guided wave mode |
US10797370B2 (en) | 2016-10-26 | 2020-10-06 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10340573B2 (en) | 2016-10-26 | 2019-07-02 | At&T Intellectual Property I, L.P. | Launcher with cylindrical coupling device and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10224634B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Methods and apparatus for adjusting an operational characteristic of an antenna |
US10291334B2 (en) | 2016-11-03 | 2019-05-14 | At&T Intellectual Property I, L.P. | System for detecting a fault in a communication system |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US20180241113A1 (en) * | 2017-02-23 | 2018-08-23 | Intel Corporation | Single wire communication cable assembly |
US10847859B2 (en) | 2017-02-23 | 2020-11-24 | Intel Corporation | Single wire communication arrangement |
US10608311B2 (en) * | 2017-02-23 | 2020-03-31 | Intel Corporation | Cable assembly comprising a single wire coupled to a signal launcher and housed in a first cover portion and in a second ferrite cover portion |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
US10763916B2 (en) | 2017-10-19 | 2020-09-01 | At&T Intellectual Property I, L.P. | Dual mode antenna systems and methods for use therewith |
US10886629B2 (en) | 2017-10-26 | 2021-01-05 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and methods for use therewith |
US10553959B2 (en) | 2017-10-26 | 2020-02-04 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and directors and methods for use therewith |
US10553960B2 (en) | 2017-10-26 | 2020-02-04 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and methods for use therewith |
US11381007B2 (en) | 2017-10-26 | 2022-07-05 | At&T Intellectual Property I, L.P. | Antenna system with planar antenna and directors and methods for use therewith |
US10714824B2 (en) | 2018-03-26 | 2020-07-14 | At&T Intellectual Property I, L.P. | Planar surface wave launcher and methods for use therewith |
US11387560B2 (en) | 2019-12-03 | 2022-07-12 | At&T Intellectual Property I, L.P. | Impedance matched launcher with cylindrical coupling device and methods for use therewith |
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