CN202662812U - Square slot type micro-strip antenna - Google Patents
Square slot type micro-strip antenna Download PDFInfo
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- CN202662812U CN202662812U CN 201220255757 CN201220255757U CN202662812U CN 202662812 U CN202662812 U CN 202662812U CN 201220255757 CN201220255757 CN 201220255757 CN 201220255757 U CN201220255757 U CN 201220255757U CN 202662812 U CN202662812 U CN 202662812U
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- impedance matching
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Abstract
The utility model discloses a square slot type micro-strip antenna which comprises a micro-strip substrate, a square annular radiation paster, a rectangular-bar radiation paster, an impedance matching input micro-strip line and a rectangular metal grounding plate. The square annular radiation paster, the rectangular-bar radiation paster and the impedance matching input micro-strip line are arranged on the upper surface of the micro-strip substrate, the rectangular-bar radiation paster is arranged in a square ring of the square annular radiation paster, the upper end of the rectangular-bar radiation paster is connected with the upper end of the square ring of the square annular radiation paster, the lower end of the square annular radiation paster is connected with one end of the impedance matching input micro-strip line, the other end of the impedance matching input micro-strip line is connected with the bottom end of the micro-strip substrate, a circular small hole penetrates through the whole micro-strip substrate and the square annular radiation paster, the rectangular metal grounding plate is arranged on the lower surface of the micro-strip substrate, and the bottom end of the rectangular metal grounding plate is connected with the bottom end of the micro-strip substrate. The square slot type 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 a kind of square open flume type microstrip antenna.
Technical background
Antenna is as an important wireless device in the communication system, and the quality of its performance will directly affect the performance of wireless device.It is little, lightweight that microstrip antenna has a volume, low section, can with the carrier syntype, make simply, cost is low, and is easy of integration, easily realizes the plurality of advantages such as double frequency, multiband work, therefore nearly more than ten years microstrip antenna has obtained widely research and development.The double frequency, the multiband microstrip antenna that are applicable to broadband WLAN are are also researched and developed.But the module gain of microstrip antenna is lower, and therefore the normal micro-strip array antenna that is comprised of the microband paste unit that adopts obtains larger gain or realizes specific directivity.
Although more existing microstrip antennas can be worked on the market,, directional properties is poor, and loss is large, therefore satisfies the requirement of WLAN communication system in the urgent need to the array antenna that works out a kind of high-gain, low-loss, wideband work.By correctly size, material and the shape of selective scattering medium, it can stop the propagation of electromagnetic wave on certain direction or all directions, has been widely used in the design of the microwave circuits such as filter, power splitter.
Summary of the invention
The utility model provides a kind of square open flume type microstrip antenna in order to overcome the deficiency that prior art is narrow at the WLAN (wireless local area network) midband, loss is large.
In order to achieve the above object, the technical solution of the utility model is as follows:
Square open flume type microstrip antenna comprises little belt substrate, square ring radiation paster, rectangular strip radiation patch, impedance matching input microstrip line and rectangular metal ground plate; Little belt substrate upper surface side of being provided with ring radiation paster, rectangular strip radiation patch and impedance matching input microstrip line, be provided with the rectangular strip radiation patch in the Fang Huan of side's ring radiation paster, rectangular strip radiation patch upper end links to each other with the Fang Huan upper end of square ring radiation paster, the bottom of side's ring radiation paster links to each other with impedance matching input microstrip line one end, and the other end of impedance matching input microstrip line links to each other with the bottom of little belt substrate; Circular aperture runs through whole little belt substrate and square ring radiation paster; Little belt substrate lower surface is provided with the rectangular metal ground plate, and the bottom of rectangular metal ground plate 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 34mm～36mm, and wide is 34mm～36mm.The outer length of side of described side's ring radiation paster is 19mm～21mm, and the interior length of side is 17mm～19mm.The length of described rectangular strip radiation patch is 1mm～2mm, and wide is 6mm～8mm.Described impedance matching input microstrip line adopts feed microstrip line to be connected with square ring radiation paster, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line is 2mm～3mm.The diameter of described circular aperture is 0.5mm～1mm, and the distance on the little belt substrate of distance of center circle top is 14mm～15mm.The length of described rectangular metal ground plate is 34mm～36mm, and wide is 9mm～11mm.
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 structure chart in square open flume type microstrip antenna front;
Fig. 2 is the structure chart at the square open flume type microstrip antenna back side;
Fig. 3 is square open flume type microstrip antenna insertion loss curve chart;
Fig. 4 is the antenna pattern of square open flume type microstrip antenna when 3.5GHz.
Embodiment
Square open flume type microstrip antenna comprises little belt substrate 1, square ring radiation paster 2, rectangular strip radiation patch 3, impedance matching input microstrip line 4 and rectangular metal ground plate 6; The little belt substrate 1 upper surface side of being provided with ring radiation paster 2, rectangular strip radiation patch 3 and impedance matching input microstrip line 4, be provided with rectangular strip radiation patch 3 in the Fang Huan of side's ring radiation paster 2, rectangular strip radiation patch 3 upper ends link to each other with the Fang Huan upper end of square ring radiation paster 2, the bottom of side's ring radiation paster 2 links to each other with impedance matching input microstrip line 4 one ends, and the other end of impedance matching input microstrip line 4 links to each other with the bottom of little belt substrate 1; Circular aperture 5 runs through whole little belt substrate 1 and square ring radiation paster 2; Little belt substrate 1 lower surface is provided with rectangular metal ground plate 6, and the bottom of rectangular metal ground plate 6 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 34mm～36mm, and wide is 34mm～36mm.The outer length of side of described side's ring radiation paster 2 is 19mm～21mm, and the interior length of side is 17mm～19mm.The length of described rectangular strip radiation patch 3 is 1mm～2mm, and wide is 6mm～8mm.Described impedance matching input microstrip line 4 adopts feed microstrip line to be connected with square ring radiation paster 2, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line 4 is 2mm～3mm.The diameter of described circular aperture 5 is 0.5mm～1mm, and the distance on the little belt substrate of distance of center circle 1 top is 14mm～15mm.The length of described rectangular metal ground plate 6 is 34mm～36mm, and wide is 9mm～11mm.
Square open flume type microstrip antenna:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 1.6 mm.The length of little belt substrate is 35mm, and wide is 35mm.The outer length of side of side's ring radiation paster is 20mm, and the interior length of side is 18mm.The length of rectangular strip radiation patch is 1mm, and wide is 7mm.Impedance matching input microstrip line adopts feed microstrip line to be connected with square ring radiation paster, and characteristic impedance is 50 Ω.The width of impedance matching input microstrip line is 3mm.The diameter of circular aperture is 0.5mm, and the distance on the little belt substrate of distance of center circle top is 14.25mm.The length of rectangular metal ground plate is 35mm, and wide is 10mm.The radiation characteristics such as the insertion loss curve of utilization software square shaped open flume type microstrip antenna and gain have been carried out insertion loss curve such as Fig. 3 of the square open flume type microstrip antenna of simulated measurement gained.As seen from Figure 3, insertion loss can cover the whole frequency range of WLAN standard 2.4GHz section 2.40 ~ 2.483GHz fully less than-10dB in 2.8 ~ 4GHz scope.Figure 4 shows that square open flume type the microstrip antenna respectively antenna pattern when 2.4GHz and antenna pattern, the gain when frequency is 2.4GHz is 2.8dBi, and the half power lobe width is 83.1 °.
Claims (9)
1. a square open flume type microstrip antenna is characterized in that comprising little belt substrate (1), square ring radiation paster (2), rectangular strip radiation patch (3), impedance matching input microstrip line (4) and rectangular metal ground plate (6); Little belt substrate (1) the upper surface side of being provided with ring radiation paster (2), rectangular strip radiation patch (3) and impedance matching input microstrip line (4), be provided with rectangular strip radiation patch (3) in the Fang Huan of side's ring radiation paster (2), rectangular strip radiation patch (3) upper end links to each other with the Fang Huan upper end of square ring radiation paster (2), the bottom of side's ring radiation paster (2) links to each other with impedance matching input microstrip line (4) one ends, and the other end of impedance matching input microstrip line (4) links to each other with the bottom of little belt substrate (1); Circular aperture (5) runs through whole little belt substrate (1) and square ring radiation paster (2); Little belt substrate (1) lower surface is provided with rectangular metal ground plate (6), and the bottom of rectangular metal ground plate (6) links to each other with the bottom of little belt substrate (1).
2. a kind of square open flume type microstrip antenna as claimed in claim 1 is characterized in that described little belt substrate (1) is the FR4 material.
3. a kind of square open flume type microstrip antenna as claimed in claim 1, the length that it is characterized in that described little belt substrate (1) is 34mm～36mm, wide is 34mm～36mm.
4. a kind of square open flume type microstrip antenna as claimed in claim 1, the outer length of side that it is characterized in that described side's ring radiation paster (2) is 19mm～21mm, the interior length of side is 17mm～19mm.
5. a kind of square open flume type microstrip antenna as claimed in claim 1, the length that it is characterized in that described rectangular strip radiation patch (3) is 1mm～2mm, wide is 6mm～8mm.
6. a kind of square open flume type microstrip antenna as claimed in claim 1 is characterized in that described impedance matching input microstrip line (4) and square ring radiation paster (2) adopt feed microstrip line to be connected, and characteristic impedance is 50 Ω.
7. a kind of square open flume type microstrip antenna as claimed in claim 1 is characterized in that the width of described impedance matching input microstrip line (4) is 2mm～3mm.
8. a kind of square open flume type microstrip antenna as claimed in claim 1, the diameter that it is characterized in that described circular aperture (5) is 0.5mm～1mm, the distance on the little belt substrate of distance of center circle (1) top is 14mm～15mm.
9. a kind of square open flume type microstrip antenna as claimed in claim 1, the length that it is characterized in that described rectangular metal ground plate (6) is 34mm～36mm, wide is 9mm～11mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255757 CN202662812U (en) | 2012-06-01 | 2012-06-01 | Square slot type micro-strip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255757 CN202662812U (en) | 2012-06-01 | 2012-06-01 | Square slot type micro-strip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662812U true CN202662812U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255757 Expired - Fee Related CN202662812U (en) | 2012-06-01 | 2012-06-01 | Square slot type micro-strip antenna |
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| Country | Link |
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| CN (1) | CN202662812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953272A (en) * | 2015-07-15 | 2015-09-30 | 中南大学 | Tri-band ultra-wide-band antenna with defected ground and circular groove |
| CN104347942B (en) * | 2014-10-24 | 2017-04-19 | 东南大学 | Q-wave band ultra-high-speed wireless local area network mobile terminal antenna |
-
2012
- 2012-06-01 CN CN 201220255757 patent/CN202662812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347942B (en) * | 2014-10-24 | 2017-04-19 | 东南大学 | Q-wave band ultra-high-speed wireless local area network mobile terminal antenna |
| CN104953272A (en) * | 2015-07-15 | 2015-09-30 | 中南大学 | Tri-band ultra-wide-band antenna with defected ground and circular groove |
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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: 20130601 |