CN202662789U - Square-shaped ultra-wide-band microstrip antenna with grooves in back surface - Google Patents
Square-shaped ultra-wide-band microstrip antenna with grooves in back surface Download PDFInfo
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- CN202662789U CN202662789U CN 201220298554 CN201220298554U CN202662789U CN 202662789 U CN202662789 U CN 202662789U CN 201220298554 CN201220298554 CN 201220298554 CN 201220298554 U CN201220298554 U CN 201220298554U CN 202662789 U CN202662789 U CN 202662789U
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- square
- fluting
- microstrip antenna
- back side
- wide
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Abstract
The utility model discloses a square-shaped ultra-wide-band microstrip antenna with grooves in the back surface, comprising a microstrip base plate, a square-shaped radiation patch, an impedance-matching input microstrip line and a metal grounding plate, wherein the upper surface of the microstrip base plate is provided with the square-shaped radiation patch and the impedance-matching input microstrip line; the bottom end of the square-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 base plate; the lower surface of the microstrip base plate is provided with the metal grounding plate; the periphery of the metal grounding plate is connected with the periphery of the microstrip base plate; the metal grounding plate is provided with a rectangular groove and a groove shaped like a Chinese character 'fei'; and the bottom end of the rectangular groove is connected with one end of the groove shaped like the Chinese character 'fei', and the other end of the groove shaped like the Chinese character 'fei' is connected with the bottom end of the microstrip base plate. The square-shaped ultra-wide-band microstrip antenna disclosed by the utility model has the advantages of stable radiation characteristic in the working band, low loss, low cost, simple structure and easiness in manufacture.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of square back side fluting ultrabroad band microstrip antenna.
Technical background
Microstrip antenna is widely used in measuring and the communication every field owing to have that section is low, lightweight, volume is little, it is conformal to be easy to and the advantage such as batch production.But microstrip antenna has its inherent shortcoming, be that its impedance bandwidth is narrower, typical frequency bandwidth is several to a few percent from percent zero point, so the narrow-band characteristic of microstrip antenna has become to limit the major obstacle of its application, so the bandwidth tool of broadening microstrip antenna is of great significance.
The frequency band of microstrip antenna is generally all narrow, and common micro-strip paster antenna only is 0.5% ~ 3%, has therefore limited the practical application of microstrip antenna on engineering.By selecting suitable substrate, the various feeding techniques of shape, size, employing that change antenna, impedance match technique etc., effectively widening frequency band.
Summary of the invention
The purpose of this utility model provides a kind of square back side fluting ultrabroad band 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 back side fluting ultrabroad band microstrip antenna comprises little belt substrate, square radiation patch, impedance matching input microstrip line and metal ground plate; Little belt substrate upper surface is provided with square radiation patch and impedance matching input microstrip line, and the bottom of square radiation patch 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; Be provided with metal ground plate at little belt substrate lower surface, the metal ground plate surrounding links to each other with little belt substrate surrounding, metal ground plate is provided with rectangle fluting and non-font fluting, and rectangle fluting bottom and the non-font end of slotting links to each other, and the other end that non-font is slotted 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 18mm～240mm, and wide is 18mm～20mm.The length of described square radiation patch is 7mm～9mm, and wide is 6mm～7mm.Described impedance matching input microstrip line adopts feed microstrip line to be connected with square radiation patch, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line is 2mm～3mm.The length of described rectangle fluting is 15mm～16mm, and wide is 10mm～12mm.The length of described non-font fluting is 5mm～7mm, and wide is 2mm～3mm.
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 fluting ultrabroad band microstrip antenna front, the square back side;
Fig. 2 is the structural representation at the fluting ultrabroad band microstrip antenna back side, the square back side;
Fig. 3 is square back side fluting ultrabroad band microstrip antenna insertion loss curve chart;
Fig. 4 is the antenna pattern of square back side fluting ultrabroad band microstrip antenna when 5.2GHz;
Fig. 5 is the antenna pattern of square back side fluting ultrabroad band microstrip antenna when 5.5GHz;
Fig. 6 is the antenna pattern of square back side fluting ultrabroad band microstrip antenna when 5.8GHz.
Embodiment
Square back side fluting ultrabroad band microstrip antenna comprises little belt substrate 1, square radiation patch 2, impedance matching input microstrip line 3 and metal ground plate 4; Little belt substrate 1 upper surface is provided with square radiation patch 2 and impedance matching input microstrip line 3, and the bottom of square radiation patch 2 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; Be provided with metal ground plate 4 at little belt substrate 1 lower surface, metal ground plate 4 surroundings link to each other with little belt substrate 1 surrounding, metal ground plate 4 is provided with rectangle fluting 5 and non-font fluting, rectangle 5 bottoms and non-font 6 one ends of slotting of slotting link to each other, and the other end of non-font fluting 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 18mm～240mm, and wide is 18mm～20mm.The length of described square radiation patch 2 is 7mm～9mm, and wide is 6mm～7mm.Described impedance matching input microstrip line 3 adopts feed microstrip line to be connected with square radiation patch 2, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line 3 is 2mm～3mm.The length of described rectangle fluting 5 is 15mm～16mm, and wide is 10mm～12mm.The length of described non-font fluting 6 is 5mm～7mm, and wide is 2mm～3mm.
Square back side fluting ultrabroad band microstrip antenna:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 1mm.The length of little belt substrate is 19mm, and wide is 19mm.The length of square radiation patch is 8mm, and wide is 6mm.Impedance matching input microstrip line adopts feed microstrip line to be connected with square radiation patch, and characteristic impedance is 50 Ω.The width of impedance matching input microstrip line is 2.4mm.The length of rectangle fluting is 16mm, and wide is 12mm.The length of non-font fluting is 6mm, and wide is 3mm.The radiation characteristics such as the insertion loss curve of utilization software square shaped back side fluting ultrabroad band microstrip antenna and gain have been carried out insertion loss curve such as Fig. 3 of the square back side fluting ultrabroad band microstrip antenna of simulated measurement gained.As seen from Figure 3, insertion loss can cover WLAN standard 5.2-GHz, 5.5-GHz, 5.8-GHz frequency range less than-10dB in 4 ~ 8.6GHz scope.The square back side of Fig. 4-Figure 6 shows that fluting ultrabroad band microstrip antenna is antenna pattern and the antenna pattern when 5.2GHz, 5.5GHz, 5.8 GHz respectively, gain when frequency is 5.2GHz is 3.3dBi, the half power lobe width is 81.7 °, be that 5.5 o'clock gain is 3.4dBi in frequency, the half power lobe width is 80.7 °, be that 5.8 o'clock gain is 3.4dBi in frequency, the half power lobe width is 79 °.
Claims (8)
1. a square back side fluting ultrabroad band microstrip antenna is characterized in that comprising little belt substrate (1), square radiation patch (2), impedance matching input microstrip line (3) and metal ground plate (4); Little belt substrate (1) upper surface is provided with square radiation patch (2) and impedance matching input microstrip line (3), the bottom of square radiation patch (2) 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); Be provided with metal ground plate (4) at little belt substrate (1) lower surface, metal ground plate (4) surrounding links to each other with little belt substrate (1) surrounding, metal ground plate (4) is provided with rectangle fluting (5) and non-font fluting, rectangle fluting (5) bottom and non-font (6) one ends of slotting link to each other, and the slot other end of (6) of non-font links to each other with the bottom of little belt substrate (1).
2. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna is characterized in that described little belt substrate (1) is the FR4 material.
3. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna, the length that it is characterized in that described little belt substrate (1) is 18mm～240mm, wide is 18mm～20mm.
4. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna, the length that it is characterized in that described square radiation patch (2) is 7mm～9mm, wide is 6mm～7mm.
5. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna is characterized in that described impedance matching input microstrip line (3) is connected with square radiation patch (2) employing feed microstrip line, and characteristic impedance is 50 Ω.
6. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna is characterized in that the width of described impedance matching input microstrip line (3) is 2mm～3mm.
7. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna is characterized in that the length of described rectangle fluting (5) is 15mm～16mm, and wide is 10mm～12mm.
8. a kind of square back side as claimed in claim 1 fluting ultrabroad band microstrip antenna is characterized in that the length of described non-font fluting (6) is 5mm～7mm, and wide is 2mm～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298554 CN202662789U (en) | 2012-06-25 | 2012-06-25 | Square-shaped ultra-wide-band microstrip antenna with grooves in back surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220298554 CN202662789U (en) | 2012-06-25 | 2012-06-25 | Square-shaped ultra-wide-band microstrip antenna with grooves in back surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662789U true CN202662789U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220298554 Expired - Fee Related CN202662789U (en) | 2012-06-25 | 2012-06-25 | Square-shaped ultra-wide-band microstrip antenna with grooves in back surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876996A (en) * | 2015-12-14 | 2017-06-20 | 佛山市东成西就智能科技有限公司 | A kind of small-sized microstrip antenna |
-
2012
- 2012-06-25 CN CN 201220298554 patent/CN202662789U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876996A (en) * | 2015-12-14 | 2017-06-20 | 佛山市东成西就智能科技有限公司 | A kind of small-sized microstrip antenna |
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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 |