CN203398283U - A symmetric single-frequency microstrip antenna with multiple connected semicircles - Google Patents
A symmetric single-frequency microstrip antenna with multiple connected semicircles Download PDFInfo
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- CN203398283U CN203398283U CN201320520180.7U CN201320520180U CN203398283U CN 203398283 U CN203398283 U CN 203398283U CN 201320520180 U CN201320520180 U CN 201320520180U CN 203398283 U CN203398283 U CN 203398283U
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Abstract
The utility model discloses a symmetric single-frequency microstrip antenna with multiple connected semicircles. The microstrip antenna comprises a substrate, a radiation paster, an impedance match input transmission line, a rectangular metal grounding board, and a semicircular metallic grounding board. The radiation paster and the impedance match input transmission line are disposed on the top surface of the substrate. The rectangular metallic grounding board and the semicircular metallic grounding board are disposed on the bottom surface of the substrate. The radiation paster is formed by four circularly-annular pasters which are connected successively. One end of the impedance match input transmission line is connected with the radiation paster, while the other end of the impedance match input transmission line is connected with the bottom of the substrate. The bottom of the semicircular metallic grounding board is connected with top of the rectangular metal grounding board. The bottom of the rectangular metal grounding board is connected with the bottom of the substrate. In the operating band, the microstrip antenna has advantages of a stable radiation characteristic, low loss, simple structure, light weight, easy production, and easy integration.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of symmetry circle connection shape Single frequency MSA mostly.
Background technology
Antenna is radiation or receive the parts of radio wave in the engineering systems such as radio communication, radio and television, satellite navigation.As transmitting antenna, the high-frequency current that it sends transmitter here (or guided wave) is transformed to radio wave and is sent to space; And as reception antenna, it does contrary conversion again, thereby between any two points, realized the transmission of signal.Therefore, antenna is the converting means of guided wave and radiated wave, i.e. energy conversion device.In many antenna systems, microstrip antenna is little with its volume, section is low! Lightweight, easy of integration, the easy advantage such as conformal and low-cost and be subject to people's favor.Microstrip antenna is on the medium substrate that is covered with conductor ground plate, to paste the antenna that adds conductor sheet and form.It,, by feeder line feeds such as microstrip line or coaxial lines, encourage electromagnetic field between conductor patch and ground plate, and passes through paster both sides and ground plate Jian gap to external radiation.
The miniaturization of microstrip antenna refers to and reduces the size of microstrip antenna and keep its operating frequency not change.Along with what study, deepen continuously and expand, for different microstrip antennas, all having proposed multiple different miniaturization technology method; And portable communication device has also proposed higher requirement to the miniaturization of antenna and compactedness, require the size dwindle microstrip antenna, so the miniaturization of the microstrip antenna person's that is always Antenna Design a study hotspot.
Summary of the invention
The utility model is large in order to overcome prior art loss in WLAN (wireless local area network), and the low deficiency that gains provides a kind of symmetry circle connection shape Single frequency MSA mostly.
In order to achieve the above object, the technical solution of the utility model is as follows:
Symmetrical circle mostly connects shape Single frequency MSA and comprises substrate, radiation patch, impedance matching input transmission line, rectangular metal ground plate, semicircle metal ground plate; The upper surface of substrate is provided with radiation patch and impedance matching input transmission line; The lower surface of substrate is provided with rectangular metal ground plate and semicircle metal ground plate; Radiation patch is connected in sequence by four annular pasters; One end of impedance matching input transmission line is connected with radiation patch, and the impedance matching input other end of transmission line and the bottom of substrate are connected; The bottom of semicircle metal ground plate is connected with the top of rectangular metal ground plate, and the bottom of rectangular metal ground plate is connected with the bottom of substrate.In the utility model working band, have stable radiation characteristic, loss is low, simple in structure, and quality is light, and cost of manufacture is low, is easy to integrated.
Described substrate is glass-epoxy material, and the length of substrate is 36mm～38mm, and width is 38mm～40mm.The outer radius of described annular paster is 6mm～7mm, and inside radius is 4mm～5mm.The length of described impedance matching input transmission line is 12.0mm～12.2mm, and width is 3.0mm～3.2mm.The length of described rectangular metal ground plate is 36mm～38mm, and width is 8mm～10mm.The radius of described semicircle metal ground plate is 4.5mm～5.0mm.
In the utility model working band, have stable radiation characteristic, loss is low, simple in structure, and quality is light, and cost of manufacture is low, is easy to integrated.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram that symmetrical circle mostly connects shape Single frequency MSA;
Fig. 2 is the structure schematic diagram that symmetrical circle mostly connects shape Single frequency MSA;
Fig. 3 is the S parametric plot that symmetrical circle mostly connects shape Single frequency MSA;
Fig. 4 is the E surface radiation directional diagram of antenna when 2.23GHz;
Fig. 5 is the H surface radiation directional diagram of antenna when 2.23GHz.
Embodiment
As shown in Fig. 1～2, symmetrical circle mostly connects shape Single frequency MSA and comprises substrate 1, radiation patch 2, impedance matching input transmission line 4, rectangular metal ground plate 5, semicircle metal ground plate 6; The upper surface of substrate 1 is provided with radiation patch 2 and impedance matching input transmission line 4; The lower surface of substrate 1 is provided with rectangular metal ground plate 5 and semicircle metal ground plate 6; Radiation patch 2 is connected in sequence by four annular pasters 3; One end of impedance matching input transmission line 4 is connected with radiation patch 2, and the other end of impedance matching input transmission line 4 is connected with the bottom of substrate 1; The bottom of semicircle metal ground plate 6 is connected with the top of rectangular metal ground plate 5, and the bottom of rectangular metal ground plate 5 is connected with the bottom of substrate 1.
Described substrate 1 is glass-epoxy material, and the length of substrate 1 is 36mm～38mm, and width is 38mm～40mm.The outer radius of described annular paster 3 is 6mm～7mm, and inside radius is 4mm～5mm.The length of described impedance matching input transmission line 4 is 12.0mm～12.2mm, and width is 3.0mm～3.2mm.The length of described rectangular metal ground plate 5 is 36mm～38mm, and width is 8mm～10mm.The radius of described semicircle metal ground plate 6 is 4.5mm～5.0mm.
Symmetrical circle mostly connects shape Single frequency MSA:
Select the glass-epoxy material that dielectric constant is 4.4 to make micro-belt substrate, thickness is 1.0mm.The length of substrate is 36mm, and width is 38mm.The outer radius of annular paster is 6mm, and inside radius is 5mm.The length of impedance matching input transmission line is 12.2mm, and width is 3.0mm.The length of rectangular metal ground plate is 36mm, and width is 8mm.The radius of semicircle metal ground plate is 4.5mm.The property indices that symmetrical circle mostly connects shape Single frequency MSA adopts CST software to test, and the S parameter curve of gained is as accompanying drawing 3.As seen from the figure ,-working frequency range below 10dB is 2.07GHz～2.44GHz.Fig. 4-5 are depicted as symmetrical circle mostly and connect E face and the H face directional diagram of shape Single frequency MSA when 2.23GHz, as seen from the figure, when frequency is 2.23GHz, gain as 2.5dBi, and half power lobe width is 88.0 °.
Claims (6)
1. symmetry is mostly justified and is connected a shape Single frequency MSA, it is characterized in that comprising substrate (1), radiation patch (2), impedance matching input transmission line (4), rectangular metal ground plate (5), semicircle metal ground plate (6); The upper surface of substrate (1) is provided with radiation patch (2) and impedance matching input transmission line (4); The lower surface of substrate (1) is provided with rectangular metal ground plate (5) and semicircle metal ground plate (6); Radiation patch (2) is connected in sequence by four annular pasters (3); One end of impedance matching input transmission line (4) is connected with radiation patch (2), and the other end of impedance matching input transmission line (4) is connected with the bottom of substrate (1); The bottom of semicircle metal ground plate (6) is connected with the top of rectangular metal ground plate (5), and the bottom of rectangular metal ground plate (5) is connected with the bottom of substrate (1).
2. a kind of symmetry as claimed in claim 1 is mostly justified and is connected shape Single frequency MSA, it is characterized in that described substrate (1) is glass-epoxy material, and the length of substrate (1) is 36mm～38mm, and width is 38mm～40mm.
3. a kind of symmetry as claimed in claim 1 is mostly justified and is connected shape Single frequency MSA, it is characterized in that the outer radius of described annular paster (3) is 6mm～7mm, and inside radius is 4mm～5mm.
4. a kind of symmetry as claimed in claim 1 is mostly justified and is connected shape Single frequency MSA, it is characterized in that the length of described impedance matching input transmission line (4) is 12.0mm～12.2mm, and width is 3.0mm～3.2mm.
5. a kind of symmetry as claimed in claim 1 is mostly justified and is connected shape Single frequency MSA, it is characterized in that the length of described rectangular metal ground plate (5) is 36mm～38mm, and width is 8mm～10mm.
6. a kind of symmetry as claimed in claim 1 is mostly justified and is connected shape Single frequency MSA, it is characterized in that the radius of described semicircle metal ground plate (6) is 4.5mm～5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520180.7U CN203398283U (en) | 2013-08-22 | 2013-08-22 | A symmetric single-frequency microstrip antenna with multiple connected semicircles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520180.7U CN203398283U (en) | 2013-08-22 | 2013-08-22 | A symmetric single-frequency microstrip antenna with multiple connected semicircles |
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| Publication Number | Publication Date |
|---|---|
| CN203398283U true CN203398283U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320520180.7U Expired - Fee Related CN203398283U (en) | 2013-08-22 | 2013-08-22 | A symmetric single-frequency microstrip antenna with multiple connected semicircles |
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| CN (1) | CN203398283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143689A (en) * | 2014-07-23 | 2014-11-12 | 天津大学 | Three-frequency antenna used for Bluetooth/RFID/WLAN/WiMAX |
-
2013
- 2013-08-22 CN CN201320520180.7U patent/CN203398283U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143689A (en) * | 2014-07-23 | 2014-11-12 | 天津大学 | Three-frequency antenna used for Bluetooth/RFID/WLAN/WiMAX |
| CN104143689B (en) * | 2014-07-23 | 2016-09-21 | 天津大学 | Three-frequency antenna for bluetooth/RFID/WLAN/WiMAX |
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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 |
Granted publication date: 20140115 Termination date: 20140822 |
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| EXPY | Termination of patent right or utility model |