CN202662786U - Round wideband microstrip antenna - Google Patents
Round wideband microstrip antenna Download PDFInfo
- Publication number
- CN202662786U CN202662786U CN 201220255762 CN201220255762U CN202662786U CN 202662786 U CN202662786 U CN 202662786U CN 201220255762 CN201220255762 CN 201220255762 CN 201220255762 U CN201220255762 U CN 201220255762U CN 202662786 U CN202662786 U CN 202662786U
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- circular
- impedance matching
- microstrip antenna
- matching input
- microstrip line
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Abstract
The utility model discloses a round wideband microstrip antenna, which comprises a microstrip substrate, a round radiant patch, an impedance matching input microstrip line and a rectangular groove metal earth plate; the upper surface of the microstrip substrate is provided with the round radiant patch and the impedance matching input microstrip line, the bottom end of the round radiant 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 lower surface of the microstrip substrate is provided with the rectangular groove metal earth plate, and the bottom end of the rectangular groove metal earth plate is connected with the bottom end of the microstrip substrate. The round wideband microstrip antenna disclosed by the utility model has the advantages of stable radiant property, low loss, low cost, simple structure and easy manufacturing in the working band.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of circular wideband microstrip antenna.
Technical background
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 utility model provides a kind of circular 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:
Circular wideband microstrip antenna comprises little belt substrate, circular radiation patch, impedance matching input microstrip line and rectangular recess metal ground plate; Little belt substrate upper surface is provided with circular radiation patch and impedance matching input microstrip line, and the bottom of circular 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; Little belt substrate lower surface is provided with the rectangular recess metal ground plate, and the bottom of rectangular recess 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 27mm～30mm, and wide is 33mm～35mm.The radius of described circular radiation patch is 8.5mm～10mm.Described impedance matching input microstrip line adopts feed microstrip line to be connected with circular radiation patch, and characteristic impedance is 50 Ω.The width of described impedance matching input microstrip line is 2mm～3mm.The length of described rectangular recess metal ground plate is 27mm～30mm, and wide is 12mm～14mm.The groove of described rectangular recess metal ground plate is divided into three-decker, and ground floor length is 5mm～7mm, highly is 0.5mm～1mm, and second layer length is 3mm～5mm, highly is 0.5mm～1mm, and the 3rd layer of length is 3mm～4mm, highly is 0.5mm～1mm.
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 circular wideband microstrip antenna front;
Fig. 2 is the structure chart at the circular wideband microstrip antenna back side;
Fig. 3 is circular wideband microstrip antenna insertion loss curve chart;
Fig. 4 is the antenna pattern of circular wideband microstrip antenna when 3.5GHz;
Fig. 5 is the antenna pattern of circular wideband microstrip antenna when 5.2GHz;
Fig. 6 is the antenna pattern of circular wideband microstrip antenna when 5.5GHz.
Embodiment
Circular wideband microstrip antenna comprises little belt substrate 1, circular radiation patch 2, impedance matching input microstrip line 3 and rectangular recess metal ground plate 4; Little belt substrate 1 upper surface is provided with circular radiation patch 2 and impedance matching input microstrip line 3, and the bottom of circular 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; Little belt substrate 1 lower surface is provided with rectangular recess metal ground plate 4, and the bottom of rectangular recess 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 27mm～30mm, and wide is 33mm～35mm.The radius of described circular radiation patch 2 is 8.5mm～10mm.Described impedance matching input microstrip line 3 adopts feed microstrip line to be connected with circular 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 rectangular recess metal ground plate 4 is 27mm～30mm, and wide is 12mm～14mm.The groove of described rectangular recess metal ground plate 4 is divided into three-decker, and ground floor length is 5mm～7mm, highly is 0.5mm～1mm, and second layer length is 3mm～5mm, highly is 0.5mm～1mm, and the 3rd layer of length is 3mm～4mm, highly is 0.5mm～1mm.
Circular wideband microstrip antenna:
Selecting dielectric constant is that 4.4 FR4 material is made little belt substrate, and thickness is 1.4 mm.The length of little belt substrate is 28mm, and wide is 34mm.The radius of circular radiation patch is 8.6mm.Impedance matching input microstrip line adopts feed microstrip line to be connected with circular radiation patch, and characteristic impedance is 50 Ω.The width of impedance matching input microstrip line is 2.6mm.The length of rectangular recess metal ground plate is 28mm, and wide is 13mm.The groove of rectangular recess metal ground plate is divided into three-decker, and ground floor length is 6mm, highly is 0.5mm, and second layer length is 4mm, highly is 1mm, and the 3rd layer of length is 3.5mm, highly is 1mm.Use software the radiation characteristics such as the insertion loss curve of circular wideband microstrip antenna and gain to be carried out insertion loss curve such as Fig. 3 of the circular wideband microstrip antenna of simulated measurement gained.As seen from Figure 3, insertion loss can cover 3.5GHz, 5.2GHz, 5.5GHz frequency range fully less than-10dB in 3.03 ~ 7.56GHz scope.Fig. 4-Figure 6 shows that respectively antenna pattern and antenna pattern when 3.5GHz, 5.2GHz, 5.5GHz of circular wideband microstrip antenna, gain when frequency is 3.5GHz is 2.7dBi, the half power lobe width is 82.8 °, gain when frequency is 5.2GHz is 3.7dBi, the half power lobe width is 73.1 °, gain when frequency is 5.5GHz is 3.8dBi, and the half power lobe width is 71.4 °.
Claims (8)
1. a circular wideband microstrip antenna is characterized in that comprising little belt substrate (1), circular radiation patch (2), impedance matching input microstrip line (3) and rectangular recess metal ground plate (4); Little belt substrate (1) upper surface is provided with circular radiation patch (2) and impedance matching input microstrip line (3), the bottom of circular 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); Little belt substrate (1) lower surface is provided with rectangular recess metal ground plate (4), and the bottom of rectangular recess metal ground plate (4) links to each other with the bottom of little belt substrate (1).
2. a kind of circular 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 circular wideband microstrip antenna as claimed in claim 1, the length that it is characterized in that described little belt substrate (1) is 27mm～30mm, wide is 33mm～35mm.
4. a kind of circular wideband microstrip antenna as claimed in claim 1, the radius that it is characterized in that described circular radiation patch (2) is 8.5mm～10mm.
5. a kind of circular wideband microstrip antenna as claimed in claim 1 is characterized in that described impedance matching input microstrip line (3) and circular radiation patch (2) adopt feed microstrip line to be connected, and characteristic impedance is 50 Ω.
6. a kind of circular wideband microstrip antenna 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 circular wideband microstrip antenna as claimed in claim 1, the length that it is characterized in that described rectangular recess metal ground plate (4) is 27mm～30mm, wide is 12mm～14mm.
8. a kind of circular wideband microstrip antenna as claimed in claim 1, the groove that it is characterized in that described rectangular recess metal ground plate (4) is divided into three-decker, ground floor length is 5mm～7mm, highly be 0.5mm～1mm, second layer length is 3mm～5mm, highly be 0.5mm～1mm, the 3rd layer of length is 3mm～4mm, highly is 0.5mm～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255762 CN202662786U (en) | 2012-06-01 | 2012-06-01 | Round wideband microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220255762 CN202662786U (en) | 2012-06-01 | 2012-06-01 | Round wideband microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662786U true CN202662786U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220255762 Expired - Fee Related CN202662786U (en) | 2012-06-01 | 2012-06-01 | Round wideband microstrip antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN202662786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585010A (en) * | 2020-06-29 | 2020-08-25 | 歌尔科技有限公司 | Antenna and wearable equipment |
-
2012
- 2012-06-01 CN CN 201220255762 patent/CN202662786U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585010A (en) * | 2020-06-29 | 2020-08-25 | 歌尔科技有限公司 | Antenna and wearable equipment |
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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 |