CN102064383B - 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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- CN102064383B CN102064383B CN201010513372.6A CN201010513372A CN102064383B CN 102064383 B CN102064383 B CN 102064383B CN 201010513372 A CN201010513372 A CN 201010513372A CN 102064383 B CN102064383 B CN 102064383B
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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 micro-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 multiple transmitting antennas, multiple reception antenna to carry out high speed data transfer is suggested, and becomes a kind of trend of future wireless system technical development.Verified, there is the mimo system of M transmitting antenna and P reception antenna, the in the situation that of P >=M, almost can make channel capacity bring up to original M doubly.From essence, if the decline between every pair of transmission/reception antennas is independently, can produce so multiple parallel subchannels.If transmit different information flows on these parallel subchannels, transmitted data rates can be provided, this is called as spatial reuse.MIMO technology, for traditional a single aerial system, can improve the availability of frequency spectrum greatly, makes system can under limited space and radio band, transmit the data service of higher rate.Overcome the difficult processing of traditional dual-band antenna, difficult debugging, high in cost of production shortcoming for this reason, very necessary thereby the omnidirectional radiation of having realized multiband is designed 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, efficiency 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 antenna bottom, radome, the radome of top cover composition, a metal bar longitudinally passes the axis of antenna, by antenna bottom, radome, top cover strains at integral, it is characterized in that, in housing, the micro-band plate of the polylith of different frequency is alternately distributed on same circumference, be built into space diversity formula structure, on micro-band plate, conduction band and ground wire are arranged on the antenna element oscillator of the two sides formation PCB formula double-sided symmetrical oscillator form of dielectric substrate symmetrically, on same plate, form radiating element and feeding network is integrated, conduction band and ground wire link into an integrated entity with the internal and external conductor of coaxial connector respectively.
As further illustrating of such scheme, described housing is arranged with one 90 ° bent angle metallic plate bracket support.
Be connected to lightning rod in metal bar upper end, 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 micro-band plate are radiused transition.
The invention has the advantages that:
1. the present invention adopts PCB formula double-sided symmetrical oscillator structure, and electric current, in the transmission limit radiation of microstrip line top, has reached the effect of plane dipole lateral radiation.On same plate, form radiating element and feeding network is integrated.Change number of unit and can realize different gains.
2. the micro-band plate of the polylith of different frequency of the present invention is alternately distributed on same circumference, is built into space diversity formula structure, has ensured the channel independence of adjacent cells, thereby realizes the characteristic of omnidirectional radiation.This key structure makes product have the advantages that directional diagram deviation in roundness is little, loss is low, efficiency is high.
3. the present invention, with lightning rod, has lightning-arrest effect.
4. whole antenna is encapsulated by a radome, reaches the effect of moisture-proof anticorrosive.
5. volume of the present invention is little, lightweight, easy to make, with low cost, and has the features such as standing-wave ratio is little.
Novel structure of the present invention, ensures that antenna keeps directional diagram substantially constant within the scope of wider multi-frequency.The features such as it is high that this antenna has efficiency, stable and reliable for performance, and cost is low.Also surmounted general omnidirectional antenna at aspects such as gains simultaneously; This invention adopts plane P CB structure, and technique is simple, is beneficial to mass production.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 a-Fig. 1 b is depicted as the micro-band plate structure of basic monolithic of the embodiment of the present 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 present invention.
Description of reference numerals: micro-band plate 4 base plate 5 radome 6 lightning rod 7 antenna bottom 8 top cover 9 metallic plate bracket 10 metal bars 11 of conduction band 1 ground wire 2 dielectric substrate 3.
Embodiment
As Fig. 1 a-Fig. 1 b, it is PCB formula double-sided symmetrical oscillator structure that the present invention adopts unit oscillator, and wherein the part shown in 1 is that top layer covers copper pattern; Part shown in 2 is that bottom covers copper pattern; 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 form, and top layer and bottom cover copper pattern symmetry; Unit oscillator is PCB formula double-sided symmetrical oscillator, forms radiating element and feeding network is integrated on same plate, changes number of unit and can reach different gains.Electric current, in the transmission limit radiation of microstrip line top, has reached the effect of plane dipole lateral radiation.Its operation principle is similar to dipole element array structure; Conduction band and ground wire wires design on described micro-band plate are radiused transition, thereby on transmission line, carry out spreading bandwidth.
PCB formula double-sided symmetrical oscillator cellular construction of the present invention is the basis of structure broadband omni-directional antenna, referring to Fig. 2, the micro-band plate 4 of polylith of different frequency is alternately distributed on the same circumference on base plate 5, be built into space diversity formula structure, ensure the channel independence of adjacent cells, thereby realized the characteristic of omnidirectional radiation.
Referring to Fig. 3, the radome being formed by antenna bottom 8, radome 6, top cover 9, a metal bar 11, longitudinally through the axis of antenna, strains at integral by antenna bottom 8, radome 6, top cover 9.All micro-band plates are encapsulated with a radome, have dwindled volume.And metal bar 11 upper ends can connect lightning rod 7, lower end can earth connection, thereby antenna has lightning protection function.The diameter of radome 6 (bottom, radome, top cover) is 1～2 times of long wavelength.Whole antenna is encapsulated by a radome 6, reaches the effect of moisture-proof anticorrosive.Radome is provided with one 90 ° bent angle metallic plate brackets 10 for supporting.
Therefore the present invention broken through the limitation of conventional omni-directional antenna single-frequency radiation, overcome the difficult processing of traditional dual-band antenna, difficult debugging, high in cost of production shortcoming, realize the omnidirectional radiation of multiband.It is simple in structure, volume is little, cost is low, can be mass; Loss is little, efficiency is high, stable and reliable for performance.
The key technical indexes of the embodiment of the present 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 understanding the present invention's; it is not limitation of the present invention; about the those of ordinary skill in field; on the basis of technical scheme described in claim; can also make multiple variation or modification; the variation that all these are equal to or modification, all should be within protection scope of the present invention.
Claims (5)
1. a 2.4/5.8GHz double frequency MIMO omnidirectional antenna, comprise antenna bottom, radome, the radome of top cover composition, a metal bar longitudinally passes the axis of antenna, by antenna bottom, radome, top cover strains at integral, it is characterized in that, the footpath that the micro-band plate of polylith of different frequency is alternately distributed in same circumference in radome upwards, be built into space diversity formula structure, the micro-band plate of monolithic is by dielectric substrate, top layer cover copper pattern be conduction band and bottom cover copper pattern be ground wire form, conduction band and ground wire are inverted symmetrically and form the antenna element oscillator of PCB formula double-sided symmetrical oscillator form on the two sides of dielectric substrate, on same plate, form radiating element and feeding network is integrated, 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 radome 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, be connected to lightning rod in metal bar upper end, 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 micro-band plate are 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 |
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| CN102064383A CN102064383A (en) | 2011-05-18 |
| CN102064383B true CN102064383B (en) | 2014-07-02 |
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Citations (4)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4878024B2 (en) * | 2007-11-16 | 2012-02-15 | Ｄｘアンテナ株式会社 | antenna |
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Patent Citations (4)
| 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 |
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| CN102064383A (en) | 2011-05-18 |
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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 |