CN202662813U - Square ultra-wideband microstrip antenna - Google Patents
Square ultra-wideband microstrip antenna Download PDFInfo
- Publication number
- CN202662813U CN202662813U CN 201220255758 CN201220255758U CN202662813U CN 202662813 U CN202662813 U CN 202662813U CN 201220255758 CN201220255758 CN 201220255758 CN 201220255758 U CN201220255758 U CN 201220255758U CN 202662813 U CN202662813 U CN 202662813U
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- square
- microstrip antenna
- impedance matching
- ultra
- wideband
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Abstract
The utility model discloses a square ultra-wideband microstrip antenna. The square ultra-wideband microstrip antenna comprises a microstrip substrate, a square radiating patch, an impedance matching input microstrip line and a rectangular metallic grounding plate, wherein the square radiating patch and the impedance matching input microstrip line are arranged on the upper surface of the microstrip substrate, the bottom end of the square radiating patch is connected with one end of the impedance matching input microstrip line, and the other end of the impedance matching input microstrip line is connected with the bottom end of the microstrip substrate; and the rectangular metallic grounding plate is arranged on the lower surface of the microstrip substrate, the periphery of the rectangular metallic grounding plate is connected with the periphery of the microstrip substrate, the center of the rectangular metallic grounding plate is provided with a rectangular slot, and the four corners of the metallic grounding plate are provided with L-shaped slots. The square ultra-wideband microstrip antenna has the advantages of stable radiation characteristic in working frequency 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 ultra-wideband 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 utility model provides a kind of square ultra-wideband 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 ultra-wideband microstrip antenna comprises little belt substrate, square radiation patch, impedance matching input microstrip line and rectangular 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 the rectangular metal ground plate at little belt substrate lower surface, rectangular metal ground plate surrounding links to each other with little belt substrate surrounding, and the center of rectangular metal ground plate is provided with the rectangle fluting, and four jiaos of places are provided with the L-type fluting at metal ground plate.
Described little belt substrate is the FR4 material.The length of described little belt substrate is 35mm～40mm, and wide is 35mm～40mm.The length of side of described square radiation patch is 7mm～10mm.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 1mm～2mm.The length of described rectangular metal ground plate is 35mm～40mm, and wide is 35mm～40mm.The length of described rectangle fluting is 25mm～27mm, and wide is 18mm～20mm.The minor face of described L-type fluting is long to be 2mm～3mm, and the long length of side is 8mm～10mm, and narrow hem width is 2mm～4mm, and broadside is wide to be 10mm～12mm.
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 ultra-wideband microstrip antenna front;
Fig. 2 is the structure chart at the square ultra-wideband microstrip antenna back side;
Fig. 3 is square ultra-wideband microstrip antenna insertion loss curve chart;
Fig. 4 is the antenna pattern of square ultra-wideband microstrip antenna when 2.5GHz;
Fig. 5 is the antenna pattern of square ultra-wideband microstrip antenna when 3.2GHz;
Fig. 6 is the antenna pattern of square ultra-wideband microstrip antenna when 5.8GHz.
Embodiment
Square ultra-wideband microstrip antenna comprises little belt substrate 1, square radiation patch 2, impedance matching input microstrip line 3 and rectangular 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 rectangular metal ground plate 4 at little belt substrate 1 lower surface, rectangular metal ground plate 4 surroundings link to each other with little belt substrate 1 surrounding, and the center of rectangular metal ground plate 4 is provided with rectangle fluting 6, and 4 four jiaos of places are provided with L-type fluting 5 at metal ground plate.
Described little belt substrate 1 is the FR4 material.The length of described little belt substrate 1 is 35mm～40mm, and wide is 35mm～40mm.The length of side of described square radiation patch 2 is 7mm～10mm.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 1mm～2mm.The length of described rectangular metal ground plate 4 is 35mm～40mm, and wide is 35mm～40mm.The length of described rectangle fluting 6 is 25mm～27mm, and wide is 18mm～20mm.The minor face of described L-type fluting 5 is long to be 2mm～3mm, and the long length of side is 8mm～10mm, and narrow hem width is 2mm～4mm, and broadside is wide to be 10mm～12mm.
Square ultra-wideband microstrip antenna:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 0.8mm.The length of little belt substrate is 35mm, and wide is 35mm.The length of side of square radiation patch is 8 mm.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 1.5mm.The length of rectangular metal ground plate is 35mm, and wide is 35mm.The length of rectangle fluting is 26mm, and wide is 20mm.The minor face of L-type fluting is long to be 2mm, and the long length of side is 9mm, and narrow hem width is 3mm, and broadside is wide to be 11mm.The radiation characteristics such as the insertion loss curve of utilization software square shaped ultra-wideband microstrip antenna and gain have been carried out insertion loss curve such as Fig. 3 of the square ultra-wideband 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 2.34 ~ 4.77GHz scope; Insertion loss can cover the whole frequency range of WLAN standard 5.8GHz section 5.75 ~ 5.85GHz fully less than-10dB in 5.57 ~ 6.05GHz scope.Fig. 4-Figure 5 shows that respectively antenna pattern and antenna pattern when 2.5GHz, 3.2GHz, 5.6 GHz of square ultra-wideband microstrip antenna, gain when frequency is 2.5GHz is 3.4dBi, the half power lobe width is 139.5 °, be that 3.2 o'clock gain is 3.5dBi in frequency, the half power lobe width is 128.7 °, be that 5.8 o'clock gain is 4.2dBi in frequency, the half power lobe width is 130.9 °.
Claims (9)
1. a square ultra-wideband microstrip antenna is characterized in that comprising little belt substrate (1), square radiation patch (2), impedance matching input microstrip line (3) and rectangular 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 rectangular metal ground plate (4) at little belt substrate (1) lower surface, rectangular metal ground plate (4) surrounding links to each other with little belt substrate (1) surrounding, the center of rectangular metal ground plate (4) is provided with rectangle fluting (6), is provided with L-type fluting (5) at metal ground plate (4) Si Jiaochu.
2. a kind of square ultra-wideband 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 ultra-wideband microstrip antenna as claimed in claim 1, the length that it is characterized in that described little belt substrate (1) is 35mm～40mm, wide is 35mm～40mm.
4. a kind of square ultra-wideband microstrip antenna as claimed in claim 1, the length of side that it is characterized in that described square radiation patch (2) is 7mm～10mm.
5. a kind of square ultra-wideband microstrip antenna as claimed in claim 1 is characterized in that described impedance matching input microstrip line (3) and square radiation patch (2) adopt feed microstrip line to be connected, and characteristic impedance is 50 Ω.
6. a kind of square ultra-wideband microstrip antenna as claimed in claim 1 is characterized in that the width of described impedance matching input microstrip line (3) is 1mm～2mm.
7. a kind of square ultra-wideband microstrip antenna as claimed in claim 1, the length that it is characterized in that described rectangular metal ground plate (4) is 35mm～40mm, wide is 35mm～40mm.
8. a kind of square ultra-wideband microstrip antenna as claimed in claim 1 is characterized in that the length of described rectangle fluting (6) is 25mm～27mm, and wide is 18mm～20mm.
9. a kind of square ultra-wideband microstrip antenna as claimed in claim 1 is characterized in that the minor face length of described L-type fluting (5) is 2mm～3mm, and the long length of side is 8mm～10mm, and narrow hem width is 2mm～4mm, and broadside is wide to be 10mm～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255758 CN202662813U (en) | 2012-06-01 | 2012-06-01 | Square ultra-wideband microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255758 CN202662813U (en) | 2012-06-01 | 2012-06-01 | Square ultra-wideband microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662813U true CN202662813U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255758 Expired - Fee Related CN202662813U (en) | 2012-06-01 | 2012-06-01 | Square ultra-wideband microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585238A (en) * | 2019-07-05 | 2021-01-06 | Zuma Array Ltd | Antenna arrangement for ceiling mounted device |
-
2012
- 2012-06-01 CN CN 201220255758 patent/CN202662813U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585238A (en) * | 2019-07-05 | 2021-01-06 | Zuma Array Ltd | Antenna arrangement for ceiling mounted device |
| GB2585238B (en) * | 2019-07-05 | 2022-07-20 | Zuma Array Ltd | Antenna arrangement for ceiling mounted 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: 20130601 |