CN202737099U - WLAN anti-interference antenna - Google Patents
WLAN anti-interference antenna Download PDFInfo
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- CN202737099U CN202737099U CN 201220468296 CN201220468296U CN202737099U CN 202737099 U CN202737099 U CN 202737099U CN 201220468296 CN201220468296 CN 201220468296 CN 201220468296 U CN201220468296 U CN 201220468296U CN 202737099 U CN202737099 U CN 202737099U
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- antenna
- wlan
- interference
- conductor
- microstrip line
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Abstract
The utility model provides a WLAN anti-interference antenna which is easy to process, easy to produce, and has an anti-interference characteristic. The WLAN anti-interference antenna comprises an antenna housing, a medium plate, an antenna, a microstrip line, a double layer baseplate, and a feed joint. The antenna and the microstrip line are respectively disposed on two sides of the medium plate. An outer surface of the feed joint is connected with the double layer baseplate and the antenna. Feed needles in the center of the feed joint are connected with the microstrip line. The antenna is a plane slot antenna, and a conductor surface of the plane slot antenna is closely stuck on the medium plate. An end of the microstrip line is connected with the conductor surface of the plane slot antenna. Using a directing radiation characteristic of the slot antenna and reflection effect of conductor plates, the antenna forms a relative weak radiating capability direction compared with an ordinary omnidirectional antenna, and making the direction facing an interference source, the antenna has effect of weakening interference.
Description
Technical field
The invention belongs to the radio field, particularly relate to the WLAN antenna
Background technology
Existing WLAN antenna mostly is omnidirectional antenna, and when two WLAN omnidirectional antennas are relatively more close, mutual interference will have a strong impact on user's access rate and message transmission rate
Summary of the invention
The present invention is directed to the defective of prior art, the WLAN anti-interference antenna of provide a kind of easy processing, easily producing and have noiseproof feature.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of WLAN anti-interference antenna is provided, comprise that radome, dielectric-slab, antenna, microstrip line, double walled floor and feed connection form, antenna and microstrip line are respectively in the dielectric-slab both sides, the feed connection outer surface is connected with double walled floor and antenna, the feed pin at feed connection center is connected with microstrip line, described antenna is planar slot antenna, the conductor surface of planar slot antenna is close to dielectric-slab, and an end of microstrip line is connected with the conductor surface of planar slot antenna.Utilize the sensing radiation characteristic of slot antenna and the reflex of conductor plate, make antenna form the weak direction of a radianting capacity compared to general omnidirectional antenna, this direction towards interference source, is played the effect that weakens interference.Microstrip line is used for transmitting high-frequency signal, two ends in succession respectively center feedback pin and the planar slot antenna of feed connection, from the energy of feed connection feed-in through microstrip line energized plane slot antenna.
Further, described planar slot antenna is the antenna that cracks on the rectangular metal horizontal edge.
Further, cracking of described planar slot antenna is banded slit.
Further, the size in described banded slit, bending shape require to determine according to performance and the impedance matching of antenna.
Further, described double walled floor comprises the first conductor and the second conductor, the first conductor and the second conductor all are the circular metal conductor plates, its size requires to determine according to performance and the impedance matching of antenna, both plane included angles, place are 0 ~ 10 degree, link to each other with the metal shell of feed connection, as the zero potential plane, be used for the effect of control plane slot antenna space radiation characteristic.
Further, the angle of described dielectric-slab and the first conductor is 90 ~ 120 degree.
Further, described dielectric-slab adopts solid dielectric or is air dielectric.
Further, the size of described microstrip line and bending shape require to determine according to performance and the impedance matching of antenna.
Compared with prior art, beneficial effect is: the non-omnidirectional of horizontal plane radiation characteristic of the present invention, can suppress the phase mutual interference between two or more antennas well.And the present invention is simple in structure take plane patch as main, is convenient to production and processing.
Description of drawings
Fig. 1 schematic appearance of the present invention;
Fig. 2 is decomposing schematic representation of the present invention;
Fig. 3 is the antenna return loss schematic diagram;
Fig. 4 is the horizontal plane radiation pattern of the present invention on 2.4GHz;
Wherein 1, radome; 2, dielectric-slab; 3, planar slot antenna; 4, microstrip line; 5, the first conductors; 6, the second conductors; 7, feed connection.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
A kind of anti-interference antenna that is applied to WLAN as shown in Figure 2, is comprised of radome 1, dielectric-slab 2, planar slot antenna 3, microstrip line 4, two round conductors 5 and 6, feed connection 7.The outer surface of feed connection 7 links to each other with 6 with two-layer circular metal conductor plate 5.One end of the microstrip line 4 on the feed pin at feed connection 7 centers and the dielectric-slab 2 links to each other, and the other end of microstrip line 4 links to each other with place, slit conductor surface, thereby the planar slot antenna 3 of another side is carried out feed.Radome 1 mainly plays a protective role to the internal structure of antenna.
Shown in Figure 3 is that the return loss of antenna is S
11Curve, as seen (2400MHz-2483.5MHz) S in the working frequency range of WLAN
11About-below the 15dB, realize preferably impedance matching, energy is radiate preferably.
Shown in Figure 4 is horizontal plane radiation pattern on the antenna 2.4GHz, visible antenna the radianting capacity of-90 ° of directions a little less than, than the low 13dB of greatest irradiation direction, except the party outwards other directions keep preferably radianting capacity.Therefore, direction that can the radianting capacity of antenna is the most weak is towards interference source, thereby reduces antenna reception to the intensity of interference source signal, taken into account simultaneously transmitting and receiving of wireless signal on other directions.
The above only is an example of the present invention; be not so limit claim of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (8)
1. WLAN anti-interference antenna, comprise radome (1), dielectric-slab (2), antenna, microstrip line (4), double walled floor and feed connection (7) form, antenna and microstrip line (4) are respectively in dielectric-slab (2) both sides, feed connection (7) outer surface is connected with double walled floor and antenna, the feed pin at feed connection (7) center is connected with microstrip line (4), it is characterized in that, described antenna is planar slot antenna (3), the conductor surface of planar slot antenna (3) is close to dielectric-slab (2), and an end of microstrip line (4) is connected with the conductor surface of planar slot antenna (3).
2. WLAN anti-interference antenna according to claim 1 is characterized in that, the antenna of described planar slot antenna (3) for cracking on the rectangular metal horizontal edge.
3. WLAN anti-interference antenna according to claim 2 is characterized in that, cracking of described planar slot antenna (3) is banded slit.
4. WLAN anti-interference antenna according to claim 3 is characterized in that, the size in described banded slit, bending shape require to determine according to performance and the impedance matching of antenna.
5. WLAN anti-interference antenna according to claim 1, it is characterized in that, described double walled floor comprises the first conductor (5) and the second conductor (6), the first conductor (5) and the second conductor (6) all are the circular metal conductor plates, its size is definite according to performance and the impedance matching requirement of antenna, and both plane included angles, place are 0 ~ 10 degree.
6. WLAN anti-interference antenna according to claim 5 is characterized in that, described dielectric-slab (2) is 90 ~ 120 degree with the angle of the first conductor (5).
7. WLAN anti-interference antenna according to claim 1 is characterized in that, described dielectric-slab (2) adopts solid dielectric or is air dielectric.
8. WLAN anti-interference antenna according to claim 1 is characterized in that, the size of described microstrip line (4) and bending shape require to determine according to performance and the impedance matching of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468296 CN202737099U (en) | 2012-09-14 | 2012-09-14 | WLAN anti-interference antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220468296 CN202737099U (en) | 2012-09-14 | 2012-09-14 | WLAN anti-interference antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737099U true CN202737099U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220468296 Expired - Fee Related CN202737099U (en) | 2012-09-14 | 2012-09-14 | WLAN anti-interference antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN202737099U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346399A (en) * | 2013-06-17 | 2013-10-09 | 苏州智聚电子科技有限公司 | Anti-interference wireless network antenna device |
| CN105282039A (en) * | 2015-09-16 | 2016-01-27 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Wireless routing device based on ceramic medium slot antenna |
| CN106602276A (en) * | 2016-11-30 | 2017-04-26 | 中国铁塔股份有限公司长春市分公司 | WLAN (wireless local area network) antenna |
| CN106785384A (en) * | 2016-11-30 | 2017-05-31 | 中国铁塔股份有限公司长春市分公司 | A kind of anti-interference antenna |
| CN108879076A (en) * | 2018-05-24 | 2018-11-23 | 湖北三江航天险峰电子信息有限公司 | A kind of broad-band slot element antenna |
-
2012
- 2012-09-14 CN CN 201220468296 patent/CN202737099U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346399A (en) * | 2013-06-17 | 2013-10-09 | 苏州智聚电子科技有限公司 | Anti-interference wireless network antenna device |
| CN105282039A (en) * | 2015-09-16 | 2016-01-27 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Wireless routing device based on ceramic medium slot antenna |
| CN106602276A (en) * | 2016-11-30 | 2017-04-26 | 中国铁塔股份有限公司长春市分公司 | WLAN (wireless local area network) antenna |
| CN106785384A (en) * | 2016-11-30 | 2017-05-31 | 中国铁塔股份有限公司长春市分公司 | A kind of anti-interference antenna |
| CN108879076A (en) * | 2018-05-24 | 2018-11-23 | 湖北三江航天险峰电子信息有限公司 | A kind of broad-band slot element antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20200914 |