CA2523070A1 - Antenna device - Google Patents

Antenna device Download PDF

Info

Publication number
CA2523070A1
CA2523070A1 CA002523070A CA2523070A CA2523070A1 CA 2523070 A1 CA2523070 A1 CA 2523070A1 CA 002523070 A CA002523070 A CA 002523070A CA 2523070 A CA2523070 A CA 2523070A CA 2523070 A1 CA2523070 A1 CA 2523070A1
Authority
CA
Canada
Prior art keywords
radiation electrode
short
antenna device
alternating current
radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002523070A
Other languages
French (fr)
Other versions
CA2523070C (en
Inventor
Harald Humpfer
Rainer Wansch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2523070A1 publication Critical patent/CA2523070A1/en
Application granted granted Critical
Publication of CA2523070C publication Critical patent/CA2523070C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/023—Means for reducing undesirable effects for reducing the scattering of mounting structures, e.g. of the struts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An antenna device comprises a first radiation electrode (12), which has an open-circuit end (12a) and a short-circuit end (12b) that is connected to a ground (22), and which is coupled to a feeding point (16) with a feeder line (14). The antenna device also comprises a second radiation electrode (24), which has an open-circuit end (24a) and a short-circuit end (24b) that is connected to a ground (22). A section of the second radiation electrode (24) is part of an electric circuit. The first radiation electrode (12), the feed er line (14) and the electric circuit are arranged in such a manner that an alternating current flowing through the feeder line (14) to the short-circui t end (12b) of the first radiation electrode (12) induces an alternating curre nt into the electric circuit via a magnetic coupling in order to supply the second radiation electrode (24).

Claims (7)

1. An antenna device comprising:
a first radiation electrode (12) comprising an open end (12a) and a short-circuited end (12b) connected to ground (22) and being coupled to a feed line (14) at a feeding point (16), wherein the feed line (14) and a portion of the first radiation electrode between the feeding point (16) and the short-circuited end (12b) define an exciter loop;
a second radiation electrode (24) comprising an open end (24a) and a short-circuited end (24b) connected to ground (22), wherein a portion of the second radiation electrode is part of a conductor loop through which an alternating current may flow, wherein the exciter loop and the conductor loop are arranged spatially adjacent to each other such that an alternating current through the feed line (14) to the short-circuited end (12b) of the first radiation electrode (12), for feeding the second radiation electrode (24), induces an alternating current into the conductor loop via magnetic coupling, wherein the second radiation electrode (24) is arranged on a surface (10b) of a substrate (10; 52) on which, additionally, a ground area (22) to which the short-circuited end (24b) of the second radiation.
electrode (24) is connected is arranged, wherein, additionally, a coupling point (28) of the second radiation electrode is connected to the ground area (22) via a coupling conductor (26) such that the part of the second radiation electrode (24) between the short-circuited end (24b) and the coupling point (28), the coupling conductor (26) and the ground area (22) define the conductor loop through which an alternating current may flow.
2. The antenna device according to claim 1, wherein the first radiation electrode (12) and the feed line (14) are arranged on a first surface (10a) of a substrate (10; 52) and the second radiation electrode (24) is arranged on a second surface (10b) of the substrate (10) opposite the first surface (10a).
3. The antenna device according to claim 1 or 2, wherein the exciter loop and the conductor loop, through which an alternating current may flow, are arranged opposite to each other, a substrate (10; 52) being arranged therebetween.
4. The antenna device according to one of claims 1 to 3, wherein the coupling point (28) is selected such that there is matching between the impedance of the second radiation electrode (24) and the impedance of the coupling line (26).
5. The antenna device according to one of claims 1 to 4, further comprising a third radiation electrode (56) comprising an open end (56a) and a short-circuited end (56b) connected to ground (22), wherein a portion of the third radiation electrode (56) is part of an electric circuit into which, for feeding the third radiation electrode (56), an alternating current may be induced by magnetic coupling by an alternating current through the feed line (14) to the short-circuited end (12b) of the first radiation electrode (12) or by an alternating current through the electric circuit associated to the second radiation electrode (24).
6. The antenna device according to claim 5, wherein the first, second and third radiation electrodes (12, 24, 56) are arranged on different layers (52, 54) of a multi-layered substrate (50).
7. The antenna device according to one of claims 1 to 6, wherein the first, second and/or third radiation electrodes (12, 24, 56) have different lengths to define antenna elements having different resonant frequencies.
CA002523070A 2003-04-28 2004-04-28 Antenna device Expired - Fee Related CA2523070C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10319093.7 2003-04-28
DE10319093A DE10319093B3 (en) 2003-04-28 2003-04-28 antenna device
PCT/EP2004/004482 WO2004097981A1 (en) 2003-04-28 2004-04-28 Antenna device

Publications (2)

Publication Number Publication Date
CA2523070A1 true CA2523070A1 (en) 2004-11-11
CA2523070C CA2523070C (en) 2009-12-22

Family

ID=33103568

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002523070A Expired - Fee Related CA2523070C (en) 2003-04-28 2004-04-28 Antenna device

Country Status (12)

Country Link
US (1) US7218282B2 (en)
EP (1) EP1576697B1 (en)
JP (1) JP4074881B2 (en)
KR (1) KR100729269B1 (en)
AT (1) ATE328372T1 (en)
AU (1) AU2004234948B2 (en)
CA (1) CA2523070C (en)
DE (2) DE10319093B3 (en)
ES (1) ES2262118T3 (en)
HK (1) HK1080221B (en)
NO (1) NO20055600L (en)
WO (1) WO2004097981A1 (en)

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Also Published As

Publication number Publication date
AU2004234948B2 (en) 2007-02-01
WO2004097981A1 (en) 2004-11-11
JP2006524940A (en) 2006-11-02
CA2523070C (en) 2009-12-22
ATE328372T1 (en) 2006-06-15
NO20055600D0 (en) 2005-11-25
KR100729269B1 (en) 2007-06-15
DE502004000660D1 (en) 2006-07-06
ES2262118T3 (en) 2006-11-16
EP1576697A1 (en) 2005-09-21
EP1576697B1 (en) 2006-05-31
JP4074881B2 (en) 2008-04-16
NO20055600L (en) 2005-11-25
DE10319093B3 (en) 2004-11-04
US20060109179A1 (en) 2006-05-25
HK1080221B (en) 2006-12-29
AU2004234948A1 (en) 2004-11-11
HK1080221A1 (en) 2006-04-21
US7218282B2 (en) 2007-05-15
KR20050103972A (en) 2005-11-01

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