CN202662793U - L-shaped coplanar ultra-wideband micro-strip antenna - Google Patents
L-shaped coplanar ultra-wideband micro-strip antenna Download PDFInfo
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- CN202662793U CN202662793U CN 201220298585 CN201220298585U CN202662793U CN 202662793 U CN202662793 U CN 202662793U CN 201220298585 CN201220298585 CN 201220298585 CN 201220298585 U CN201220298585 U CN 201220298585U CN 202662793 U CN202662793 U CN 202662793U
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Abstract
The utility model discloses an L-shaped coplanar ultra-wideband micro-strip antenna which comprises a micro-strip substrate, a rectangular hollow radiation paster, an L-shaped radiation metal paster and an impedance matching input micro-strip line. The L-shaped radiation metal paster, the rectangular hollow radiation paster and the impedance matching input micro-strip line are arranged on the upper surface of the micro-strip substrate, the bottom end of the L-shaped radiation metal paster is connected with one end of the impedance matching input micro-strip line, the periphery of the rectangular hollow radiation paster is connected with the periphery of the micro-strip substrate, a rectangular slot is arranged at the center of the rectangular hollow radiation paster, the L-shaped radiation metal paster is arranged in the rectangular hollow radiation paster, and the other end of the impedance matching input micro-strip line is connected with the bottom end of the micro-strip substrate. The L-shaped coplanar ultra-wideband micro-strip antenna has stable radiation property in a working band and is low in loss and cost, simple in structure and easy to manufacture.
Description
Technical field
The utility model relates to antenna, relates in particular to the coplanar ultra-wideband microstrip antenna of a kind of L-type.
Technical background
Along with the development of microwave integrated technology and space technology to the active demand of low profile antenna, launched in the world microstrip antenna extensively and is in depth studied, new construction and high performance microstrip antenna continue to bring out.Compare with common microwave antenna, microstrip antenna have thin profile, volume little, simple in structure, be fit to printed circuit technique produce in enormous quantities, can be conformal with carrier, be easy to integrated, make simple, be easy to realize the multiple advantage of dual polarization etc.The not available advantage of antenna of other types such as micro-strip paster antenna is high with its efficient, size is little, analytical method is ripe and being used widely.
Many performances of broadband dual polarized antenna itself and engineering application requirements, brought difficulty for research and design: to require on the one hand antenna to have wider frequency band, preferably gain and directional diagram, good isolation and cross polarization, also need on the other hand to consider the factors such as cost, installation and debugging, volume, weight.These 2 years, the research of all channel antenna obtained some new progresses.Bi Qun Wu and Kwai-Man Luk have proposed the dual polarized antenna of a kind of pair of inverted L shape feed in the literature, realized 65.9% impedance bandwidth (VSWR＜2) and be lower than-isolation of 36dB, stable gain and directional diagram are arranged still, there are several shortcomings in this antenna: the one, and the structure of employing metal straight forming, weight is larger; The 2nd, feed line and support, the distance between the post is very little, and this distance is very large on the impedance bandwidth impact, will inevitably increase the cost of installation, debugging, maintenance; The 3rd, distance is excessive between two inverted L shape feed lines of this antenna, and the consistency of impedance is poor.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiency that the prior art frequency band is narrow, loss is large, to provide a kind of L-type coplanar ultra-wideband microstrip antenna.
In order to achieve the above object, the technical solution of the utility model is as follows:
The coplanar ultra-wideband microstrip antenna of L-type comprises little belt substrate, rectangle hollow out radiation patch, L-type radiation metal paster, impedance matching input microstrip line; Little belt substrate upper surface is provided with L-type radiation metal paster, rectangle hollow out radiation patch, impedance matching input microstrip line, the bottom of L-type radiation metal paster links to each other with impedance matching input microstrip line one end, rectangle hollow out radiation patch surrounding links to each other with little belt substrate surrounding, the center of rectangle hollow out radiation patch is provided with the rectangle fluting, be provided with L-type radiation metal paster in rectangle hollow out radiation patch, the other end of impedance matching input microstrip line links to each other with the bottom of little belt substrate.
Described little belt substrate is the FR4 material.The length of described little belt substrate is 24mm～26mm, and wide is 14mm～16mm.The length of described L-type radiation patch is 17mm～19mm, and wide is 9mm～10mm.Described impedance matching input microstrip line adopts feed microstrip line to be connected with rectangle hollow out radiation patch, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line (4) is 3mm～4mm.The length of described rectangle hollow out radiation metal paster is 24mm～26mm, and wide is 14mm～16mm, and metallic plate is wide to be 1mm～2mm; The spacing of inputting microstrip line with impedance matching is 0.3mm～0.5mm.
Have stable radiation characteristic in the utility model working band, loss is low, cost is low, and is simple in structure, be easy to make.
Description of drawings:
Fig. 1 is the structural representation of the coplanar ultra-wideband microstrip antenna of L-type;
Fig. 2 is the coplanar ultra-wideband microstrip antenna insertion loss of L-type curve chart;
Fig. 3 is the antenna pattern of the coplanar ultra-wideband microstrip antenna of L-type when 5GHz;
Fig. 4 is the antenna pattern of the coplanar ultra-wideband microstrip antenna of L-type when 5.2GHz;
Fig. 5 is the antenna pattern of the coplanar ultra-wideband microstrip antenna of L-type when 5.5GHz;
Fig. 6 is the antenna pattern of the coplanar ultra-wideband microstrip antenna of L-type when 10.0GHz.
Embodiment
The coplanar ultra-wideband microstrip antenna of L-type comprises little belt substrate 1, rectangle hollow out radiation patch 2, L-type radiation metal paster 3, impedance matching input microstrip line 4; Little belt substrate 1 upper surface is provided with L-type radiation metal paster 3, rectangle hollow out radiation patch 2, impedance matching input microstrip line 4, the bottom of L-type radiation metal paster 3 links to each other with impedance matching input microstrip line 4 one ends, rectangle hollow out radiation patch 2 surroundings link to each other with little belt substrate 1 surrounding, the center of rectangle hollow out radiation patch 2 is provided with the rectangle fluting, be provided with L-type radiation metal paster 3 in rectangle hollow out radiation patch 2, the other end of impedance matching input microstrip line 4 links to each other with the bottom of little belt substrate 1.
Described little belt substrate 1 is the FR4 material.The length of described little belt substrate 1 is 24mm～26mm, and wide is 14mm～16mm.The length of described L-type radiation patch 3 is 17mm～19mm, and wide is 9mm～10mm.Described impedance matching input microstrip line 4 adopts feed microstrip line to be connected with rectangle hollow out radiation patch 2, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line 4 is 3mm～4mm.The length of described rectangle hollow out radiation metal paster 2 is 24mm～26mm, and wide is 14mm～16mm, and metallic plate is wide to be 1mm～2mm; The spacing of inputting microstrip line 4 with impedance matching is 0.3mm～0.5mm.
Embodiment 1
The coplanar ultra-wideband microstrip antenna of L-type:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 0.72mm.The length of little belt substrate is 25mm, and wide is 15mm.The length of L-type radiation patch is 18mm, and wide is 9.5mm.Impedance matching input microstrip line adopts feed microstrip line to be connected with radiation patch, and characteristic impedance is 50 Ω.The width of impedance matching input microstrip line is 3mm.The radiation metal plate is rectangular configuration, and long is 25mm, and wide is 15mm, and metallic plate is wide to be 1.5mm; The spacing of inputting microstrip line with impedance matching is 0.3mm.Use software that the radiation characteristics such as the insertion loss curve of the coplanar ultra-wideband microstrip antenna of L-type and gain have been carried out simulated measurement, insertion loss curve such as Fig. 2 of the coplanar ultra-wideband microstrip antenna of L-type of gained.As seen from Figure 2, insertion loss can the covering ultra wideband frequency range less than-10dB in 3.89 ~ 12GHz scope.Fig. 3-Figure 6 shows that respectively antenna pattern and antenna pattern when 5GHz, 5.2GHz, 5.5 GHz, 10 GHz of the coplanar ultra-wideband microstrip antenna of L-type, gain when frequency is 5GHz is 3.1dBi, the half power lobe width is 86.3 °, gain when frequency is 5.2 GHz is 3.1dBi, the half power lobe width is 86.5 °, gain when frequency is 5.5GHz is 3.2dBi, the half power lobe width is 86.9 °, gain when frequency is 10GHz is 4.2dBi, and the half power lobe width is 64.7 °.
Claims (7)
1. the coplanar ultra-wideband microstrip antenna of L-type is characterized in that comprising little belt substrate (1), rectangle hollow out radiation patch (2), L-type radiation metal paster (3), impedance matching input microstrip line (4); Little belt substrate (1) upper surface is provided with L-type radiation metal paster (3), rectangle hollow out radiation patch (2), impedance matching input microstrip line (4), the bottom of L-type radiation metal paster (3) links to each other with impedance matching input microstrip line (4) one ends, rectangle hollow out radiation patch (2) surrounding links to each other with little belt substrate (1) surrounding, the center of rectangle hollow out radiation patch (2) is provided with the rectangle fluting, be provided with L-type radiation metal paster (3) in rectangle hollow out radiation patch (2), the other end of impedance matching input microstrip line (4) links to each other with the bottom of little belt substrate (1).
2. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1 is characterized in that described little belt substrate (1) is the FR4 material.
3. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1, the length that it is characterized in that described little belt substrate (1) is 24mm～26mm, wide is 14mm～16mm.
4. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1, the length that it is characterized in that described L-type radiation patch (3) is 17mm～19mm, wide is 9mm～10mm.
5. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1 is characterized in that described impedance matching input microstrip line (4) and rectangle hollow out radiation patch (2) adopt feed microstrip line to be connected, and characteristic impedance is 50 Ω.
6. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1 is characterized in that the width of described impedance matching input microstrip line (4) is 3mm～4mm.
7. the coplanar ultra-wideband microstrip antenna of a kind of L-type as claimed in claim 1, the length that it is characterized in that described rectangle hollow out radiation metal paster (2) is 24mm～26mm, and wide is 14mm～16mm, and metallic plate is wide to be 1mm～2mm; The spacing of inputting microstrip line (4) with impedance matching is 0.3mm～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298585 CN202662793U (en) | 2012-06-25 | 2012-06-25 | L-shaped coplanar ultra-wideband micro-strip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298585 CN202662793U (en) | 2012-06-25 | 2012-06-25 | L-shaped coplanar ultra-wideband micro-strip antenna |
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| Publication Number | Publication Date |
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| CN202662793U true CN202662793U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220298585 Expired - Fee Related CN202662793U (en) | 2012-06-25 | 2012-06-25 | L-shaped coplanar ultra-wideband micro-strip antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009290A (en) * | 2014-05-28 | 2014-08-27 | 天津大学 | Coplanar waveguide feed wearable patch antenna for ISM wave band |
| CN116505267A (en) * | 2023-06-27 | 2023-07-28 | 广东工业大学 | Ultra-wideband dual circularly polarized antenna and wireless communication device |
-
2012
- 2012-06-25 CN CN 201220298585 patent/CN202662793U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009290A (en) * | 2014-05-28 | 2014-08-27 | 天津大学 | Coplanar waveguide feed wearable patch antenna for ISM wave band |
| CN116505267A (en) * | 2023-06-27 | 2023-07-28 | 广东工业大学 | Ultra-wideband dual circularly polarized antenna and wireless communication device |
| CN116505267B (en) * | 2023-06-27 | 2023-09-15 | 广东工业大学 | Ultra-wideband dual circularly polarized antenna and wireless communication device |
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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: 20130109 Termination date: 20130625 |