CN102064383A - 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna - Google Patents
2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna Download PDFInfo
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- CN102064383A CN102064383A CN2010105133726A CN201010513372A CN102064383A CN 102064383 A CN102064383 A CN 102064383A CN 2010105133726 A CN2010105133726 A CN 2010105133726A CN 201010513372 A CN201010513372 A CN 201010513372A CN 102064383 A CN102064383 A CN 102064383A
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- radome
- ground wire
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Abstract
The invention discloses a 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna comprising an antenna cover consisting of an antenna bottom cover, an antenna sheath and a top cover. A metal bar longitudinally passes through the axial line of the antenna so as to tightly pull the antenna bottom cover, the antenna sheath and the top cover into a whole. The 2.4/5.8GHz dual-frequency MIMO omnidirectional antenna is characterized in that a plurality of microstrip plates with different frequencies in a shell are alternatively and uniformly distributed on the same one circumference, each microstrip plate consists of a medium substrate, a guide belt and a ground line, and the guide belt and the ground line are symmetrically and reversely arranged on two surfaces of the medium substrate, and are also respectively integrated with an inner conductor and an outer conductor of a coaxial connector. The invention breaks through the limitation of single frequency of the traditional omnidirectional antenna, and overcomes the shortages of high machining and debugging difficulties, high cost and the like; and the alternatively and uniformly distributed microstrip plates realizes the multiple frequencies coexistence; meanwhile, the invention exceeds the normal omnidirectional antenna in the aspects of bandwidth and gain. The invention has simple process and is beneficial to the batch production due to the plane PCB (Printed Circuit Board) structure.
Description
Technical field
The present invention relates to a kind of communication omnidirectional antenna, especially little band conveying type 2.4/5.8GHz double frequency MIMO omnidirectional antenna.
Background technology
Along with the appearance of MIMO technology, a kind of method of utilizing a plurality of transmitting antennas, a plurality of reception antenna to carry out high speed data transfer is suggested, and becomes a kind of trend of following wireless communication technology development.Verified, have the mimo system of M transmitting antenna and P reception antenna, almost can be under the situation of P 〉=M so that channel capacity is brought up to original M doubly.On essence,, can produce a plurality of parallel subchannels so if the decline between the every pair of transmission/reception antennas is independently.If the different information flow of transmission can provide transmitted data rates on these parallel subchannels, this is called as spatial reuse.The MIMO technology can improve the availability of frequency spectrum greatly for traditional a single aerial system, and the data service of higher rate can be transmitted in the system that makes under limited space and radio band.Overcome shortcomings such as the difficult processing of traditional dual-band antenna, difficult debugging, cost height for this reason, very necessary thereby the omnidirectional radiation of having realized multiband is designed the MIMO omnidirectional antenna.
Summary of the invention
The object of the present invention is to provide that a kind of processing is simple, cost is low, the space diversity formula structure multifrequency MIMO omnidirectional antenna that debugging easily, efficient is high.
The present invention realizes above-mentioned purpose by following technical scheme:
2.4/5.8GHz double frequency MIMO omnidirectional antenna of the present invention, comprise the antenna bottom, radome, the radome that top cover is formed, a metal bar vertically passes the axis of antenna, with the antenna bottom, radome, top cover strains at and is integral, it is characterized in that, the little band plate of the polylith of different frequency alternately is distributed on the same circumference in housing, be built into space diversity formula structure, conduction band and ground wire are arranged on the antenna element oscillator of the two-sided symmetrical dipole form of two sides formation PCB formula of dielectric substrate symmetrically on little band plate, it is integrated to form radiating element and feeding network on same plate, and conduction band and ground wire link into an integrated entity with the internal and external conductor of coaxial connector respectively.
As further specifying of such scheme, described housing is arranged with one 90 ° bent angle metallic plate bracket support.
Be connected to lightning rod in the metal bar upper end, the lower end is connected to ground wire.
The diameter of described radome (bottom, radome, top cover) is 1～2 times of long wavelength.
Conduction band and ground wire wires design on described little band plate are the radiused transition.
The invention has the advantages that:
1. the present invention adopts the two-sided symmetrical dipole structure of PCB formula, and electric current has reached the effect of plane dipole lateral radiation in the transmission limit radiation of microstrip line top.Formation radiating element and feeding network are integrated on same plate.Change number of unit and can realize different gains.
2. the little band plate of the polylith of different frequency of the present invention alternately is distributed on the same circumference, is built into space diversity formula structure, has guaranteed the channel independence of adjacent cells, thereby realizes the characteristic of omnidirectional radiation.This key structure makes product have the advantages that the directional diagram deviation in roundness is little, loss is low, efficient is high.
3. the present invention has lightning rod, has lightning-arrest effect.
4. entire antenna is encapsulated by a radome, reaches the effect of moisture-proof anticorrosive.
5. volume of the present invention is little, in light weight, easy to make, with low cost, and has characteristics such as standing-wave ratio is little.
Novel structure of the present invention guarantees that antenna keeps directional diagram constant substantially in the multi-frequency scope of broad.Characteristics such as this antenna has the efficient height, and is stable and reliable for performance, and cost is low.Simultaneously also surmounted general omnidirectional antenna at aspects such as gains; Plane P CB structure is adopted in this invention, and technology is simple, is beneficial to mass production.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments:
Fig. 1 a-Fig. 1 b is depicted as the little band plate structure of basic monolithic of the embodiment of the invention.
Figure 2 shows that the inner plan structure schematic diagram of installing of antenna.
Figure 3 shows that the surface structure schematic diagram of the embodiment of the invention.
Description of reference numerals: conduction band 1 ground wire 2 dielectric substrates 3 little band plate 4 base plates 5 radomes 6 lightning rods 7 antenna bottoms 8 top covers 9 metallic plate carriages 10 metal bars 11.
Embodiment
As Fig. 1 a-Fig. 1 b, it is the two-sided symmetrical dipole structure of PCB formula that the present invention adopts the unit oscillator, and wherein the part shown in 1 is covered copper pattern for top layer; Part shown in 2 is covered copper pattern for bottom; The 3rd, dielectric substrate.
Referring to Fig. 1 a-Fig. 1 b, monolithic microstrip antenna shown in the present can be divided into several oscillator unit, and each unit covers copper by top layer---conduction band 1, bottom covers copper---ground wire 2 and dielectric substrate 3 constitutes, and top layer and bottom cover the copper pattern symmetry; The unit oscillator is the two-sided symmetrical dipole of PCB formula, and formation radiating element and feeding network are integrated on same plate, changes number of unit and can reach different gains.Electric current has reached the effect of plane dipole lateral radiation in the transmission limit radiation of microstrip line top.Its operation principle is similar to the dipole element array structure; Conduction band and ground wire wires design on described little band plate are the radiused transition, thereby come spreading bandwidth on transmission line.
The two-sided symmetrical dipole cellular construction of PCB formula of the present invention is the basis of structure broadband omni-directional antenna, referring to Fig. 2, the little band plate 4 of the polylith of different frequency alternately is distributed on the same circumference on the base plate 5, be built into space diversity formula structure, guarantee the channel independence of adjacent cells, thereby realized the characteristic of omnidirectional radiation.
Referring to Fig. 3, by the radome that antenna bottom 8, radome 6, top cover 9 are formed, a metal bar 11 vertically passes the axis of antenna, and antenna bottom 8, radome 6, top cover 9 are strained at and be integral.With a radome all little band plates are encapsulated, dwindled volume.And metal bar 11 upper ends can connect lightning rod 7, but the lower end earth connection, thus antenna has lightning protection function.The diameter of radome 6 (bottom, radome, top cover) is 1～2 times of long wavelength.Entire antenna reaches the effect of moisture-proof anticorrosive by 6 encapsulation of a radome.Radome is provided with one 90 ° bent angle metallic plate carriages 10 and is used for supporting.
Therefore the present invention broken through the limitation of conventional omni-directional antenna single-frequency radiation, overcome shortcomings such as the difficult processing of traditional dual-band antenna, difficult debugging, cost height, realized the omnidirectional radiation of multiband.It is simple in structure, volume is little, cost is low, can produce in batches; Loss is little, efficient is high, stable and reliable for performance.
The key technical indexes of the embodiment of the invention is:
1. frequency range: 2400～2500MHz; 5150～5850MHz;
2. gain: 6 ± 0.5dBi;
3. horizontal plane lobe width: 360 °;
4. vertical plane lobe width: 40 °;
5. voltage standing wave ratio :≤1.5;
6. polarization mode: perpendicular polarization.
Above embodiment is for the usefulness of understanding the present invention; be not to be limitation of the present invention; the those of ordinary skill in relevant field; on the basis of the described technical scheme of claim; can also make multiple variation or modification; variation that all these are equal to or modification all should be within protection scope of the present invention.
Claims (5)
1. 2.4/5.8GHz double frequency MIMO omnidirectional antenna, comprise the antenna bottom, radome, the radome that top cover is formed, a metal bar vertically passes the axis of antenna, with the antenna bottom, radome, top cover strains at and is integral, it is characterized in that, the little band plate of the polylith of different frequency alternately is distributed on the same circumference in housing, be built into space diversity formula structure, the little band plate of monolithic is by dielectric substrate, it is that to cover copper pattern be that ground wire constitutes for conduction band and bottom that top layer covers copper pattern, conduction band and ground wire are inverted symmetrically and constitute the antenna element oscillator of the two-sided symmetrical dipole form of PCB formula on the two sides of dielectric substrate, it is integrated to form radiating element and feeding network on same plate, and conduction band and ground wire link into an integrated entity with the internal and external conductor of coaxial connector respectively.
2. 2.4/5.8GHz double frequency MIMO omnidirectional antenna according to claim 1 is characterized in that described housing is arranged with one 90 ° bent angle metallic plate bracket support.
3. 2.4/5.8GHz double frequency MIMO omnidirectional antenna according to claim 1 and 2 is characterized in that, is connected to lightning rod in the metal bar upper end, and the lower end is connected to ground wire.
4. 2.4/5.8GHz double frequency MIMO omnidirectional antenna according to claim 3 is characterized in that, the diameter of described radome is 1～2 times of long wavelength.
5. 2.4/5.8GHz double frequency MIMO omnidirectional antenna according to claim 1 and 2 is characterized in that conduction band and ground wire wires design on described little band plate are the radiused transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010513372.6A CN102064383B (en) | 2010-10-20 | 2010-10-20 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010513372.6A CN102064383B (en) | 2010-10-20 | 2010-10-20 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
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| Publication Number | Publication Date |
|---|---|
| CN102064383A true CN102064383A (en) | 2011-05-18 |
| CN102064383B CN102064383B (en) | 2014-07-02 |
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| CN201010513372.6A Active CN102064383B (en) | 2010-10-20 | 2010-10-20 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969689A (en) * | 1997-01-13 | 1999-10-19 | Metawave Communications Corporation | Multi-sector pivotal antenna system and method |
| CN1362755A (en) * | 2000-12-31 | 2002-08-07 | 富士康(昆山)电脑接插件有限公司 | Printed dipole antenna |
| CN2722454Y (en) * | 2004-08-10 | 2005-08-31 | 广州杰赛科技股份有限公司 | Assembled antenna |
| CN2893958Y (en) * | 2006-05-19 | 2007-04-25 | 东南大学 | Bidirectional multifrequency multimode integrated antenna |
| JP2009124589A (en) * | 2007-11-16 | 2009-06-04 | Dx Antenna Co Ltd | Antenna |
-
2010
- 2010-10-20 CN CN201010513372.6A patent/CN102064383B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969689A (en) * | 1997-01-13 | 1999-10-19 | Metawave Communications Corporation | Multi-sector pivotal antenna system and method |
| CN1362755A (en) * | 2000-12-31 | 2002-08-07 | 富士康(昆山)电脑接插件有限公司 | Printed dipole antenna |
| CN2722454Y (en) * | 2004-08-10 | 2005-08-31 | 广州杰赛科技股份有限公司 | Assembled antenna |
| CN2893958Y (en) * | 2006-05-19 | 2007-04-25 | 东南大学 | Bidirectional multifrequency multimode integrated antenna |
| JP2009124589A (en) * | 2007-11-16 | 2009-06-04 | Dx Antenna Co Ltd | Antenna |
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| CN102064383B (en) | 2014-07-02 |
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Owner name: GUANGDONG KENBOTONG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANBOTONG TELECOMMUNICATION INDUSTRIAL CO., LTD., FOSHAN CITY |
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Address after: 528061, Foshan, Guangdong Province, Chancheng District, Jihua Road, Zen Road, No. 2 Health Science Park Patentee after: Guangdong Science and Technology Co., Ltd. of strong Botong Address before: 528061, Foshan, Guangdong Province, Chancheng District, Jihua Road, Zen Road, No. 2 Health Science Park Patentee before: Jianbotong Telecommunication Industrial Co., Ltd., Foshan City |