CN203398280U - A symmetric spiral double-frequency microstrip antenna - Google Patents
A symmetric spiral double-frequency microstrip antenna Download PDFInfo
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- CN203398280U CN203398280U CN201320520157.8U CN201320520157U CN203398280U CN 203398280 U CN203398280 U CN 203398280U CN 201320520157 U CN201320520157 U CN 201320520157U CN 203398280 U CN203398280 U CN 203398280U
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- rectangular
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- side spiral
- radiation paster
- paster
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Abstract
The utility model discloses a symmetric spiral double-frequency microstrip antenna comprising a substrate, a rectangular radiation paster, a left-side spiral radiation paster, a right-side spiral radiation paster, an impedance match input transmission line, and a rectangular metallic grounding board. The rectangular radiation paster, the left-side spiral radiation paster, the right-side spiral radiation paster, and the impedance match input transmission line are disposed on the top surface of the substrate. The rectangular metallic grounding board is disposed on the bottom surface of the substrate. The left end of the rectangular radiation paster is connected with the left-side spiral radiation paster, while the right end of the rectangular radiation paster is connected with the right-side spiral radiation paster. One end of the impedance match input transmission line is connected with the rectangular 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 rectangular metallic grounding board is connected with the bottom of the substrate. In the operating band, the symmetric spiral double-frequency microstrip antenna has advantages of a stable radiation characteristic, low loss, double frequency bands, simple structure, a small size, low production cost, and easy integration.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of symmetric helix shape double-frequency micro-strip antenna.
Background technology
The most basic structure of microstrip antenna is exactly additional thin metal patch on the dielectric substrate with grounding metal plane, by certain feeding classification, areas of dielectric underexcitation between paster and grounding metal plane plays radio frequency electromagnetic field, and this gap forming by patch edges and ground plane is to external radiation.Compare with conventional microwave antenna, microstrip antenna has the following advantage: (1) volume is little, lightweight, and low section can be conformal with carrier (as aircraft); (2) electrical property variation, the microstrip element of different designs, its greatest irradiation direction can be mapped within the scope of end-fire and adjust from limit; (3) energy and active device, circuit are integrated into unified assembly, are therefore applicable to large-scale production, greatly reduce cost.
Along with the development of radio communication, level of integrated system is more and more higher, and the wide-band of antenna and two-band have become the study hotspot in Present Domestic outside antenna field.The micro-strip paster antenna of two-frequency operation, require in principle has similar radiation characteristic and matching properties on two working frequency range, with planar technique, obtains these performances remarkable, particularly must retain the intrinsic structure of paster antenna.Therefore needing research and design to go out double-frequency micro-strip antenna function admirable, broad frequency range has great importance and application prospect.
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 symmetric helix shape double-frequency micro-strip antenna.
In order to achieve the above object, the technical solution of the utility model is as follows:
Symmetric helix shape double-frequency micro-strip antenna comprises substrate, rectangular radiation patch, left side spiral radiation paster, right side spiral radiation paster, impedance matching input transmission line, rectangular metal ground plate; The upper surface of substrate is provided with rectangular radiation patch, left side spiral radiation paster, right side spiral radiation paster, impedance matching input transmission line; The lower surface of substrate is provided with rectangular metal ground plate; The left end of rectangular radiation patch is connected with left side spiral radiation paster, the right-hand member of rectangular radiation patch is connected with right side spiral radiation paster, one end of impedance matching input transmission line is connected with rectangular radiation patch, the impedance matching input other end of transmission line and the bottom of substrate are connected, and the bottom of rectangular metal ground plate is connected with the bottom of substrate.
Described substrate is glass-epoxy material, and the length of substrate is 58mm～60mm, and width is 62mm～64mm.The length of described rectangular radiation patch is 16mm～18mm, and width is 2mm～4mm.Described left side spiral radiation paster is identical with the dimensional parameters of right side spiral radiation paster, and five rectangular patches that equate by width connect to inside spin and form successively; The length of two rectangular patches that connect successively differs 2mm, and the length of outermost rectangular patch is 18mm～19mm, and the width of paster is 2mm～3mm.The length of described impedance matching input transmission line is 22mm～23mm, and width is 2mm～3mm.The length of described rectangular metal ground plate is 58mm～60mm, and width is 20mm～22mm.
In the utility model working band, have stable radiation characteristic, loss is low, and two-band is simple in structure, and volume is little, and cost of manufacture is low, is convenient to integrated.
Accompanying drawing explanation:
Fig. 1 is the Facad structure schematic diagram of symmetric helix shape double-frequency micro-strip antenna;
Fig. 2 is the structure schematic diagram of symmetric helix shape double-frequency micro-strip antenna;
Fig. 3 is the S parametric plot of symmetric helix shape double-frequency micro-strip antenna;
Fig. 4 is the E surface radiation directional diagram of antenna when 2.15GHz;
Fig. 5 is the H surface radiation directional diagram of antenna when 2.15GHz;
Fig. 6 is the E surface radiation directional diagram of antenna when 6.0GHz;
Fig. 7 is the H surface radiation directional diagram of antenna when 6.0GHz.
Embodiment
As shown in Fig. 1～2, symmetric helix shape double-frequency micro-strip antenna comprises substrate 1, rectangular radiation patch 2, left side spiral radiation paster 3, right side spiral radiation paster 4, impedance matching input transmission line 5, rectangular metal ground plate 6; The upper surface of substrate 1 is provided with rectangular radiation patch 2, left side spiral radiation paster 3, right side spiral radiation paster 4, impedance matching input transmission line 5; The lower surface of substrate 1 is provided with rectangular metal ground plate 6; The left end of rectangular radiation patch 2 is connected with left side spiral radiation paster 3, the right-hand member of rectangular radiation patch 2 is connected with right side spiral radiation paster 4, one end of impedance matching input transmission line 5 is connected with rectangular radiation patch 2, the other end of impedance matching input transmission line 5 is connected with the bottom of substrate 1, and the bottom of rectangular metal ground plate 6 is connected with the bottom of substrate 1.
Described substrate 1 is glass-epoxy material, and the length of substrate 1 is 58mm～60mm, and width is 62mm～64mm.The length of described rectangular radiation patch 2 is 16mm～18mm, and width is 2mm～4mm.Described left side spiral radiation paster 3 is identical with the dimensional parameters of right side spiral radiation paster 4, and five rectangular patches that equate by width connect to inside spin and form successively; The length of two rectangular patches that connect successively differs 2mm, and the length of outermost rectangular patch is 18mm～19mm, and the width of paster is 2mm～3mm.The length of described impedance matching input transmission line 5 is 22mm～23mm, and width is 2mm～3mm.The length of described rectangular metal ground plate 6 is 58mm～60mm, and width is 20mm～22mm.
Embodiment 1
Symmetric helix shape double-frequency micro-strip antenna:
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 58mm, and width is 62mm.The length of rectangular radiation patch is 16mm, and width is 2mm.Left side spiral radiation paster is identical with the dimensional parameters of right side spiral radiation paster, and five rectangular patches that equate by width connect to inside spin and form successively; The length of two rectangular patches that connect successively differs 2mm, and the length of outermost rectangular patch is 18mm, and the width of paster is 2mm.The length of impedance matching input transmission line is 22mm, and width is 2mm.The length of rectangular metal ground plate is 58mm, and width is 20mm.The property indices of symmetric helix shape double-frequency micro-strip antenna 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 1.98GHz～2.41GHz and 4.59GHz～7.10GHz.Fig. 4-5 are depicted as E face and the H face directional diagram of symmetric helix shape double-frequency micro-strip antenna when 2.15GHz, as seen from the figure, when frequency is 2.15GHz, gain as 3.1dBi, and half power lobe width is 84.2 °.Fig. 6-7 are depicted as E face and the H face directional diagram of symmetric helix shape double-frequency micro-strip antenna when 6.0GHz, as seen from the figure, when frequency is 6.0GHz, gain as 1.7dBi, and half power lobe width is 57.2 °.
Claims (6)
1. a symmetric helix shape double-frequency micro-strip antenna, is characterized in that comprising substrate (1), rectangular radiation patch (2), left side spiral radiation paster (3), right side spiral radiation paster (4), impedance matching input transmission line (5), rectangular metal ground plate (6); The upper surface of substrate (1) is provided with rectangular radiation patch (2), left side spiral radiation paster (3), right side spiral radiation paster (4), impedance matching input transmission line (5); The lower surface of substrate (1) is provided with rectangular metal ground plate (6); The left end of rectangular radiation patch (2) is connected with left side spiral radiation paster (3), the right-hand member of rectangular radiation patch (2) is connected with right side spiral radiation paster (4), one end of impedance matching input transmission line (5) is connected with rectangular radiation patch (2), the other end of impedance matching input transmission line (5) is connected with the bottom of substrate (1), and the bottom of rectangular metal ground plate (6) is connected with the bottom of substrate (1).
2. a kind of symmetric helix shape double-frequency micro-strip antenna as claimed in claim 1, is characterized in that described substrate (1) is glass-epoxy material, and the length of substrate (1) is 58mm～60mm, and width is 62mm～64mm.
3. a kind of symmetric helix shape double-frequency micro-strip antenna as claimed in claim 1, is characterized in that the length of described rectangular radiation patch (2) is 16mm～18mm, and width is 2mm～4mm.
4. a kind of symmetric helix shape double-frequency micro-strip antenna as claimed in claim 1, it is characterized in that described left side spiral radiation paster (3) is identical with the dimensional parameters of right side spiral radiation paster (4), five rectangular patches that equate by width connect to inside spin and form successively; The length of two rectangular patches that connect successively differs 2mm, and the length of outermost rectangular patch is 18mm～19mm, and the width of paster is 2mm～3mm.
5. a kind of symmetric helix shape double-frequency micro-strip antenna as claimed in claim 1, is characterized in that the length of described impedance matching input transmission line (5) is 22mm～23mm, and width is 2mm～3mm.
6. a kind of symmetric helix shape double-frequency micro-strip antenna as claimed in claim 1, is characterized in that the length of described rectangular metal ground plate (6) is 58mm～60mm, and width is 20mm～22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520157.8U CN203398280U (en) | 2013-08-22 | 2013-08-22 | A symmetric spiral double-frequency microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520157.8U CN203398280U (en) | 2013-08-22 | 2013-08-22 | A symmetric spiral double-frequency microstrip antenna |
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| Publication Number | Publication Date |
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| CN203398280U true CN203398280U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320520157.8U Expired - Fee Related CN203398280U (en) | 2013-08-22 | 2013-08-22 | A symmetric spiral double-frequency microstrip antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281028A (en) * | 2015-11-23 | 2016-01-27 | 上海新爱季信息技术有限公司 | Zigbee antenna with harmonic suppression function |
| CN114094329A (en) * | 2021-11-22 | 2022-02-25 | 江苏科技大学 | Symmetrical top Peano fractal loaded microstrip patch antenna |
-
2013
- 2013-08-22 CN CN201320520157.8U patent/CN203398280U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281028A (en) * | 2015-11-23 | 2016-01-27 | 上海新爱季信息技术有限公司 | Zigbee antenna with harmonic suppression function |
| CN105281028B (en) * | 2015-11-23 | 2019-09-13 | 上海新爱季信息技术有限公司 | Zigbee antenna with harmonic restraining function |
| CN114094329A (en) * | 2021-11-22 | 2022-02-25 | 江苏科技大学 | Symmetrical top Peano fractal loaded microstrip patch antenna |
| CN114094329B (en) * | 2021-11-22 | 2023-10-03 | 江苏科技大学 | Symmetrical top Peano fractal loaded microstrip patch 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 |
Granted publication date: 20140115 Termination date: 20140822 |
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| EXPY | Termination of patent right or utility model |