CN202957345U - Wideband micro-strip antenna - Google Patents
Wideband micro-strip antenna Download PDFInfo
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- CN202957345U CN202957345U CN 201220677559 CN201220677559U CN202957345U CN 202957345 U CN202957345 U CN 202957345U CN 201220677559 CN201220677559 CN 201220677559 CN 201220677559 U CN201220677559 U CN 201220677559U CN 202957345 U CN202957345 U CN 202957345U
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- microstrip antenna
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- rectangular
- strip antenna
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Abstract
The utility model relates to a micro-strip antenna technology, discloses a wideband micro-strip antenna, and aims to overcome the defect that a micro-strip antenna in the prior art is narrow in band. By the improvement of a conventional rectangular micro-strip antenna, the bandwidth of an antenna is increased. The utility model adopts the technical scheme that the wideband micro-strip antenna comprises a substrate, and the micro-strip antenna on the front surface of the substrate, wherein the micro-strip antenna is rectangular; two rectangular grooves in parallel with short edges are formed at each long edge of the micro-strip antenna; the two rectangular grooves are in the same shape and are symmetrically distributed on two sides of a connecting line of middle points of the long edges of the micro-strip antenna; the width of each rectangular groove is smaller than one second of the length of each long edge of the micro-strip antenna; and the depth of each rectangular groove is smaller than the length of each short edge. The bandwidth of the antenna is increased by using a simple process, and parameters of the antenna are convenient to adjust. Under the condition that system cost is not improved basically, the bandwidth can reach 20 percent.
Description
Technical field
The utility model relates to the microstrip antenna technology, particularly microstrip antenna band spread technology.
Background technology
General microstrip antenna system is to apply metal forming as ground plane 11 at dielectric substrate 1 back side, the metal patch 10(that definite shape is made with lithography corrosion technology in front is microstrip antenna), common are rectangle and circle shape, flat plane antenna paster 10 feeds formed with coaxial line or microstrip line, be called again microstrip antenna system, as shown in Figure 1.The operation principle of microstrip antenna is that metal patch is equivalent to an inductor capacitor resonant circuit, and the electromagnetic wave by coaxial feed produces electromagnetic resonance at metal patch, finally electromagnetic wave energy is radiate or receives.
For the microstrip antenna of rectangular metal paster, minor face has determined the operating frequency size of antenna, and minor face is larger, and operating frequency is lower.The distributing point O of antenna is usually located on the mid point PQ line of the long limit of rectangular metal paster, and the reflection of its position influence antenna, adjust the reflection loss that distributing point O can reduce antenna, improves the performance of antenna.5 ︰ 4 are generally got with the ratio of minor face in the long limit of rectangular patch.
The characteristics of microstrip antenna are thin profile, and the microstrip antenna volume is little, lightweight, and cost is low, are easy to batch production.Be easy to that even the various object shells such as bullet are conformal with aircraft, satellite.Microstrip antenna is planar structure, is easy to other circuit integrated.But microstrip antenna has an obvious shortcoming, its working band is very narrow, usually only has 3% left and right, this has limited the range of application of microstrip antenna greatly, present electromagnetic environment is very complicated, and broadcast system, PCS Personal Communications System, Bluetooth technology, RFID(radio-frequency (RF) identification are arranged), radar system, satellite communication system etc.A system often relates to a plurality of frequency ranges, therefore a microstrip antenna often can not meet the requirement of system, if adopt this antenna, will adopt several antennas in a system, certainly will increase like this volume and the cost of system,, miniaturization broadband with the development trend of modern communication technology runed counter to.
The utility model content
Technical problem to be solved in the utility model, just be to provide a kind of wideband microstrip antenna, by the improvement to existing rectangular microstrip antenna, improves the beamwidth of antenna.
The utility model solve the technical problem, the technical scheme adopted is, a kind of wideband microstrip antenna, comprise the microstrip antenna in substrate and substrate front, and described microstrip antenna is orthogonal, it is characterized in that, described microstrip antenna has 2 rectangular channels parallel with minor face on long limit, and it is identical shaped that 2 rectangular channels have, and 2 rectangular channels are symmetrically distributed in the both sides that microstrip antenna is grown limit mid point line, width of rectangular is less than 1/2 of the long limit of microstrip antenna, and the rectangular channel degree of depth is less than the microstrip antenna minor face.
Preferably, described 2 rectangular channel openings are positioned on the same long limit of microstrip antenna.
Concrete, described 2 rectangular channel openings lay respectively on two long limits of microstrip antenna.
Further, described substrate back is provided with metal ground plane.
Concrete, described microstrip antenna adopts coaxial feeding, and described microstrip antenna feed point is connected with the coaxial line heart yearn, and described metal ground plane is connected with the coaxial line screen.
Concrete, described microstrip antenna feed point is positioned on the mid point line of the long limit of microstrip antenna.
Concrete, described microstrip antenna feed point is positioned on the mid point of the long limit of microstrip antenna mid point line.
The beneficial effects of the utility model are that, by the simple technique broadening beamwidth of antenna, antenna parameter is easy to adjust.In the situation that basically do not increase system cost, bandwidth can reach 20%.
The accompanying drawing explanation
Fig. 1 is prior art rectangular microstrip antenna schematic diagram;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the schematic diagram of embodiment 1;
Fig. 4 is the schematic diagram of embodiment 2.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Microstrip antenna of the present utility model has 2 rectangular channels parallel with minor face on traditional long limit, rectangular microstrip sky, and it is identical shaped that 2 rectangular channels have, and 2 rectangular channels are symmetrically distributed in the both sides of the long limit of microstrip antenna mid point line.Width of rectangular should be less than 1/2 of the long limit of microstrip antenna, and the rectangular channel degree of depth should be less than the microstrip antenna minor face.Microstrip antenna of the present utility model is equivalent to form two inductor capacitor resonant circuits, and these two resonant circuits are coupled, thus broadening the bandwidth of operation of antenna.
These routine microstrip antenna 10 structures as shown in Figure 3, have 2 identical shaped rectangular channels 100 on traditional long limit, rectangular microstrip sky (being the Q limit in Fig. 3), the opening of rectangular channel 100 is positioned on long limit Q, rectangular channel 100 is parallel with minor face, and 2 rectangular channels 100 are symmetrically distributed in the both sides of the long limit mid point line PQ of microstrip antenna.In Fig. 3, rectangular channel 100 width K are less than 1/2 of the long limit of microstrip antenna, and rectangular channel 100 degree of depth L are less than the microstrip antenna minor face.This routine microstrip antenna substrate back is provided with metal ground plane 11, adopts coaxial feeding.Microstrip antenna 10 distributing point O are positioned at the long limit mid point line PQ of microstrip antenna above, and this distributing point O is connected with the coaxial line heart yearn, and the coaxial line screen is connected with metal ground plane 11.Adjust the position of distributing point O along straight line PQ, can reduce the reflection loss of microstrip antenna, improve the performance of antenna.The position of adjusting length L, width K and the rectangular channel 100 of rectangular channel 100 can increase the bandwidth of antenna.
Embodiment 2
As different from Example 1,2 rectangular channel 100 openings lay respectively on 10 two long limits of microstrip antenna this routine microstrip antenna structure, and as shown in Figure 4, rectangular channel 100 openings are positioned at long limit Q, and another rectangular channel 100 openings are positioned at long limit P.This routine microstrip antenna also adopts coaxial feeding, and its distributing point O is positioned on the mid point of the long limit mid point line PQ of microstrip antenna.Other structures of this example are referring to the description of embodiment 1.
Claims (7)
1. a wideband microstrip antenna, the microstrip antenna that comprises substrate and substrate front, described microstrip antenna is orthogonal, it is characterized in that, described microstrip antenna has 2 rectangular channels parallel with minor face on long limit, and it is identical shaped that 2 rectangular channels have, and 2 rectangular channels are symmetrically distributed in the both sides that microstrip antenna is grown limit mid point line, width of rectangular is less than 1/2 of the long limit of microstrip antenna, and the rectangular channel degree of depth is less than the microstrip antenna minor face.
2. a kind of wideband microstrip antenna according to claim 1, is characterized in that, described 2 rectangular channel openings are positioned on the same long limit of microstrip antenna.
3. a kind of wideband microstrip antenna according to claim 1, is characterized in that, described 2 rectangular channel openings lay respectively on two long limits of microstrip antenna.
4. according to claim 1,2 or 3 described a kind of wideband microstrip antennas, it is characterized in that, described substrate back is provided with metal ground plane.
5. a kind of wideband microstrip antenna according to claim 4, is characterized in that, described microstrip antenna adopts coaxial feeding, and described microstrip antenna feed point is connected with the coaxial line heart yearn, and described metal ground plane is connected with the coaxial line screen.
6. a kind of wideband microstrip antenna according to claim 5, is characterized in that, described microstrip antenna feed point is positioned on the mid point line of the long limit of microstrip antenna.
7. a kind of wideband microstrip antenna according to claim 6, is characterized in that, described microstrip antenna feed point is positioned on the mid point of the long limit of microstrip antenna mid point line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677559 CN202957345U (en) | 2012-12-10 | 2012-12-10 | Wideband micro-strip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677559 CN202957345U (en) | 2012-12-10 | 2012-12-10 | Wideband micro-strip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957345U true CN202957345U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220677559 Expired - Fee Related CN202957345U (en) | 2012-12-10 | 2012-12-10 | Wideband micro-strip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957345U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241822A (en) * | 2014-09-12 | 2014-12-24 | 昆山联滔电子有限公司 | Planar antenna |
| CN108470976A (en) * | 2018-04-11 | 2018-08-31 | 西安交通大学 | A kind of W-waveband microfilter antenna based on rectangular coaxial cable architecture |
-
2012
- 2012-12-10 CN CN 201220677559 patent/CN202957345U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241822A (en) * | 2014-09-12 | 2014-12-24 | 昆山联滔电子有限公司 | Planar antenna |
| CN104241822B (en) * | 2014-09-12 | 2017-02-22 | 昆山联滔电子有限公司 | Planar antenna |
| CN108470976A (en) * | 2018-04-11 | 2018-08-31 | 西安交通大学 | A kind of W-waveband microfilter antenna based on rectangular coaxial cable architecture |
| CN108470976B (en) * | 2018-04-11 | 2019-10-11 | 西安交通大学 | A kind of W-waveband microfilter antenna based on rectangular coaxial cable architecture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131210 |