CN202797266U - Inverted-ladder-shaped single-frequency microstrip antenna - Google Patents
Inverted-ladder-shaped single-frequency microstrip antenna Download PDFInfo
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- CN202797266U CN202797266U CN 201220298597 CN201220298597U CN202797266U CN 202797266 U CN202797266 U CN 202797266U CN 201220298597 CN201220298597 CN 201220298597 CN 201220298597 U CN201220298597 U CN 201220298597U CN 202797266 U CN202797266 U CN 202797266U
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- steps shape
- inverted steps
- inverted
- microstrip line
- impedance matching
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Abstract
The utility model discloses an inverted-ladder-shaped single-frequency microstrip antenna, which comprises a microstrip substrate, an inverted-ladder-shaped radiation patch, an impedance matching input microstrip line and a ladder-shaped crown metal ground plate, wherein the upper surface of the microstrip substrate is provided with the inverted-ladder-shaped radiation patch and the impedance matching input microstrip line; the bottom end of the inverted-ladder-shaped radiation patch is connected with one end of the impedance matching input microstrip line; the other end of the impedance matching input microstrip line is connected with the bottom end of the microstrip substrate; the lower surface of the microstrip substrate is provided with the ladder-shaped crown metal ground plate; and the bottom end of the ladder-shaped crown metal ground plate is connected with the bottom end of the microstrip substrate. The inverted-ladder-shaped single-frequency microstrip antenna in the working frequency band is stable in radiation performance, low in loss, low in cost, simple in structure and easy in manufacturing.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of inverted steps shape Single frequency MSA.
Background technology
Microstrip antenna have little, lightweight, the easy feed of volume, easily with the advantages such as carrier is conformal, be widely used in measurement and the every field of communicating by letter.But the narrow-band characteristic of microstrip antenna has limited its extensive use aspect a lot, so the bandwidth tool of broadening microstrip antenna is of great significance.
In recent years, people are doing a lot of research aspect the bandwidth of broadening microstrip antenna: increase substrate thickness, reduce dielectric constant; Adopt the electromagnetic coupled multi resonant to shake the mode of spread bandwidth, the mode of employing aperture-coupled adopts sandwich construction.The method that is chosen in paster surface fluting realizes the design of all channel antenna.The method can keep the low section characteristic of microstrip antenna, and simple in structure, is easy to make.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiency that prior art is narrow at the WLAN (wireless local area network) midband, loss is large, a kind of inverted steps shape Single frequency MSA to be provided.
In order to achieve the above object, the technical solution of the utility model is as follows:
Inverted steps shape Single frequency MSA comprises little belt substrate, inverted steps shape radiation patch, impedance matching input microstrip line and trapezoidal hat metal ground plate.Little belt substrate upper surface is provided with inverted steps shape radiation patch and impedance matching input microstrip line, and inverted steps shape radiation patch bottom 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; Little belt substrate lower surface is provided with trapezoidal metal ground plate, and the bottom of trapezoidal hat 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 25mm～27mm, and wide is 31mm～33mm.The length of described inverted steps shape radiation patch is 12mm～14mm, and wide is 15mm～17mm, and first order ladder is long to be 8mm～10mm, and wide is 2mm～3mm.Described impedance matching input microstrip line adopts feed microstrip line to be connected with inverted steps shape radiation patch, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line is 2mm～3mm.Described trapezoidal hat metal ground plate is trapezoidal and the rectangle composite construction, and trapezoidal upper base is long to be 9mm～11mm, the long 25mm～27mm that is that goes to the bottom, and height is 5mm～6mm; Rectangle is long to be 25mm～27mm, and wide is 7mm～9mm.
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 in inverted steps shape Single frequency MSA front;
Fig. 2 is the structural representation at the inverted steps shape Single frequency MSA back side;
Fig. 3 is inverted steps shape Single frequency MSA insertion loss curve chart;
Fig. 4 is the antenna pattern of inverted steps shape Single frequency MSA when 3.5GHz.
Embodiment
Inverted steps shape Single frequency MSA comprises little belt substrate 1, inverted steps shape radiation patch 2, impedance matching input microstrip line 3 and trapezoidal hat metal ground plate 4.Little belt substrate 1 upper surface is provided with inverted steps shape radiation patch 2 and impedance matching input microstrip line 3, and inverted steps shape radiation patch 2 bottoms link to each other with impedance matching input microstrip line 3 one ends, and the other end of impedance matching input microstrip line 3 links to each other with the bottom of little belt substrate 1; Little belt substrate 1 lower surface is provided with trapezoidal hat metal ground plate 4, and the bottom of trapezoidal metal ground plate 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 25mm～27mm, and wide is 31mm～33mm.The length of described inverted steps shape radiation patch 2 is 12mm～14mm, and wide is 15mm～17mm, and first order ladder is long to be 8mm～10mm, and wide is 2mm～3mm.Described impedance matching input microstrip line 3 adopts feed microstrip line to be connected with inverted steps shape radiation patch 2, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line 3 is 2mm～3mm.Described trapezoidal hat metal ground plate 4 is trapezoidal and the rectangle composite construction, and trapezoidal upper base is long to be 9mm～11mm, the long 25mm～27mm that is that goes to the bottom, and height is 5mm～6mm; Rectangle is long to be 25mm～27mm, and wide is 7mm～9mm.
Inverted steps shape Single frequency MSA:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 0.8 mm.The length of little belt substrate is 26mm, and wide is 32mm.The length of inverted steps shape radiation patch is 13mm, and wide is 16mm, and first order ladder is long to be 9mm, and wide is 2mm.Impedance matching input microstrip line adopts feed microstrip line to be connected with inverted steps shape radiation patch, and characteristic impedance is 50 Ω.The width of impedance matching input microstrip line is 2mm.Trapezoidal hat metal ground plate is trapezoidal and the rectangle composite construction, and trapezoidal upper base is long to be 10mm, the long 26mm that is that goes to the bottom, and height is 5.5mm; Rectangle is long to be 26mm, and wide is 8mm.Use software that the radiation characteristics such as the insertion loss curve of inverted steps shape Single frequency MSA and gain have been carried out simulated measurement, insertion loss curve such as Fig. 3 of the inverted steps shape Single frequency MSA of gained.As seen from Figure 3, insertion loss can cover the whole frequency range of WLAN standard 3.5GHz section 3.30 ~ 3.80GHz fully less than-10dB in 3.04 ~ 4.28GHz scope.Figure 4 shows that antenna pattern and the antenna pattern of inverted steps shape Single frequency MSA when centre frequency is 3.5GHz, the gain when frequency is 3.5GHz is 2.6dBi, and the half power lobe width is 82.7 °.
Claims (7)
1. an inverted steps shape Single frequency MSA is characterized in that comprising little belt substrate (1), inverted steps shape radiation patch (2), impedance matching input microstrip line (3) and trapezoidal hat metal ground plate (4); Little belt substrate (1) upper surface is provided with inverted steps shape radiation patch (2), impedance matching input microstrip line (3), inverted steps shape radiation patch (2) bottom links to each other with impedance matching input microstrip line (3) one ends, and the other end of impedance matching input microstrip line (3) links to each other with the bottom of little belt substrate (1); Little belt substrate (1) lower surface is provided with trapezoidal hat metal ground plate (4), and the bottom of trapezoidal hat metal ground plate (4) links to each other with the bottom of little belt substrate (1).
2. a kind of inverted steps shape Single frequency MSA as claimed in claim 1 is characterized in that described little belt substrate (1) is the FR4 material.
3. a kind of inverted steps shape Single frequency MSA as claimed in claim 1, the length that it is characterized in that described little belt substrate (1) is 25mm～27mm, wide is 31mm～33mm.
4. a kind of inverted steps shape Single frequency MSA as claimed in claim 1, the length that it is characterized in that described inverted steps shape radiation patch (2) is 12mm～14mm, and wide is 15mm～17mm, and first order ladder is long to be 8mm～10mm, and wide is 2mm～3mm.
5. a kind of inverted steps shape Single frequency MSA as claimed in claim 1 is characterized in that described impedance matching input microstrip line (3) and inverted steps shape radiation patch (2) adopt feed microstrip line to be connected, and characteristic impedance is 50 Ω.
6. a kind of inverted steps shape Single frequency MSA as claimed in claim 1 is characterized in that the width of described impedance matching input microstrip line (3) is 2mm～3mm.
7. a kind of inverted steps shape Single frequency MSA as claimed in claim 1 is characterized in that described trapezoidal hat metal ground plate (4) is trapezoidal and rectangle composite construction, and trapezoidal upper base is long to be 9mm～11mm, the long 25mm～27mm that is that goes to the bottom, and height is 5mm～6mm; Rectangle is long to be 25mm～27mm, and wide is 7mm～9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298597 CN202797266U (en) | 2012-06-25 | 2012-06-25 | Inverted-ladder-shaped single-frequency microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298597 CN202797266U (en) | 2012-06-25 | 2012-06-25 | Inverted-ladder-shaped single-frequency microstrip antenna |
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| Publication Number | Publication Date |
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| CN202797266U true CN202797266U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220298597 Expired - Fee Related CN202797266U (en) | 2012-06-25 | 2012-06-25 | Inverted-ladder-shaped single-frequency microstrip antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579768A (en) * | 2013-11-07 | 2014-02-12 | 中国计量学院 | Bean-sprout-shaped single-frequency narrow-band micro-strip antenna |
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN106099329A (en) * | 2016-07-01 | 2016-11-09 | 天津大学 | A kind of isotropic wideband monopole sub antenna |
| CN106876923A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | With the mimo antenna of line in a kind of type groove based on cross |
-
2012
- 2012-06-25 CN CN 201220298597 patent/CN202797266U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579768A (en) * | 2013-11-07 | 2014-02-12 | 中国计量学院 | Bean-sprout-shaped single-frequency narrow-band micro-strip antenna |
| CN106876923A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | With the mimo antenna of line in a kind of type groove based on cross |
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN106099329A (en) * | 2016-07-01 | 2016-11-09 | 天津大学 | A kind of isotropic wideband monopole sub antenna |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20130313 Termination date: 20130625 |