CN202308313U - Opening convex type double-frequency microstrip antenna based on EBG structure - Google Patents
Opening convex type double-frequency microstrip antenna based on EBG structure Download PDFInfo
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- CN202308313U CN202308313U CN2011204510823U CN201120451082U CN202308313U CN 202308313 U CN202308313 U CN 202308313U CN 2011204510823 U CN2011204510823 U CN 2011204510823U CN 201120451082 U CN201120451082 U CN 201120451082U CN 202308313 U CN202308313 U CN 202308313U
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Abstract
The utility model discloses an opening convex type double-frequency microstrip antenna based on an EBG (electromagnetic Band Gap) structure, and is characterized in that: eight EBG radiating units are arranged into two rows which are not contacted with each other to form an EBG radiating structure, two sides of an impedance match input transmission line are respectively provided with one EBG radiating structure; an upper surface of a microstrip substrate is provided with an opening convex type radiating patch, the EBG radiating structures and the impedance match input transmission line, wherein a lower end of the opening convex type radiating patch is connected with the impedance match input transmission line; a lower surface of the microstrip substrate is provided with a rectangular metal ground plate corresponding to the impedance match input transmission line and the EBG radiating structures; and the each EBG radiating unit is a square metal plate, a hole is punched in the middle of the square metal plate and passes through the microstrip substrate and the rectangular metal ground plate. By adopting a microstrip antenna technology and a microstrip line feeding way, the opening convex type double-frequency microstrip antenna of the utility model has the advantages of low cost, good radiation characteristic, simple structure, convenient integration, and capacity for satisfying requirements of wireless local area network communication.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure.
Background technology
(WLAN as transmission medium, provides the function of traditional LAN with the wireless multiple access channel for Local Area Network, extension LAN), has realized at any time, broadband network inserts everywhere as cable LAN.And along with the continuous development of its application, it is prone to install, the characteristics such as expansion, manageability, easy care, high mobility that are prone to show especially day by day, and shown the development prospect that it is unprecedented gradually.Antenna is as an important wireless device in the communication system, and the quality of its performance will directly influence the performance of wireless device.
It is little, in light weight that microstrip antenna has a volume, low section, can with the carrier syntype, make simply, cost is low, and is easy of integration, realizes plurality of advantages such as double frequency, multiband work easily, therefore nearly more than ten years microstrip antenna has obtained extensive studies and development.The double frequency, the multiband microstrip antenna that are applicable to broadband WLAN are also obtaining research and development.
Microstrip antenna in the WLAN generally is circle or rectangular patch to be slotted improve directionality in the market, but loss is big, and power is little.EBG (Electromagnetic Bandgap, electromagnetic bandgap structure) is a kind of periodicity microwave structure with band resistance characteristic, slow wave characteristic, high equivalent characteristic impedance characteristic.Through 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 microwave circuits such as filter, power splitter.Utilize this EBG structure and microstrip antenna to combine and effectively to suppress unwanted frequency range, realize double-frequency micro-strip antenna.
Summary of the invention
Prior art is narrow at the WLAN midband, loss is big in order to overcome for the utility model, and the low deficiency that gains provides a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure.
In order to achieve the above object, the technical scheme of the utility model is following:
Opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure comprises little belt substrate, opening convex radiation patch, electro-magnetic bandgap radiating element, electro-magnetic bandgap irradiation structure, impedance matching input transmission line, rectangular metal ground plate; 8 electro-magnetic bandgap radiating element branches are classified non-touching two rows as and are constituted the electro-magnetic bandgap irradiation structure; Be respectively equipped with an electro-magnetic bandgap irradiation structure in impedance matching input transmission line both sides; The upper surface of little belt substrate is provided with opening convex radiation patch, electro-magnetic bandgap irradiation structure, impedance matching input transmission line; Opening convex radiation patch lower end links to each other with impedance matching input transmission line; The lower surface of little belt substrate is provided with and impedance matching input transmission line and the corresponding rectangular metal ground plate of electro-magnetic bandgap irradiation structure; The electro-magnetic bandgap radiating element is the square-shaped metal plate, and the middle punching of square-shaped metal plate is also passed little belt substrate and rectangular metal ground plate.
Described little belt substrate is the Taconic-RF-35 material.The length of described little belt substrate is 50mm～52mm, and width is 38mm～40mm.Described electro-magnetic bandgap radiating element is a square, and the square length of side is 4mm～4.2mm.Spacing between the described electro-magnetic bandgap radiating element equates that spacing is 0.2mm～0.3mm.The radius of circular hole is 0.4mm～0.6mm in the middle of the described electro-magnetic bandgap radiating element.Described opening convex radiation patch adopts feed microstrip line to be connected with impedance matching input transmission line, and characteristic impedance is 50 Ω, and the micro belt line width of impedance matching input transmission line is 2.7mm ~ 2.75mm.The length of described rectangular metal ground plate and the equal in length of little belt substrate, width are 17mm～18mm.
It is high to the utlity model has gain, low, the two-frequency operation of loss, and cost is low, is easy to make, and satisfies the requirement of WLAN.
Description of drawings:
Fig. 1 is based on the structural front view of the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure;
Fig. 2 is based on the structure rearview of the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure;
Fig. 3 is based on the insertion damage curve figure of opening convex double-frequency micro-strip antenna when 1 ~ 8GHz of electromagnetic bandgap structure;
Fig. 4 is based on the antenna pattern of opening convex double-frequency micro-strip antenna E face when 2.4GHz of electromagnetic bandgap structure;
Fig. 5 is based on the antenna pattern of opening convex double-frequency micro-strip antenna H face when 2.4GHz of electromagnetic bandgap structure;
Fig. 6 is based on the antenna pattern of opening convex double-frequency micro-strip antenna E face when 5.8GHz of electromagnetic bandgap structure;
Fig. 7 is based on the antenna pattern of opening convex double-frequency micro-strip antenna H face when 5.8GHz of electromagnetic bandgap structure.
Embodiment
Like Fig. 1, shown in 2, comprise little belt substrate 1, opening convex radiation patch 2, electro-magnetic bandgap radiating element 3, electro-magnetic bandgap irradiation structure 4, impedance matching input transmission line 5, rectangular metal ground plate 6 based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure; 8 electro-magnetic bandgap radiating elements were classified non-touching two rows in 3 minutes as and are constituted electro-magnetic bandgap irradiation structure 4; Be respectively equipped with an electro-magnetic bandgap irradiation structure 4 in impedance matching input transmission line 5 both sides; The upper surface of little belt substrate 1 is provided with opening convex radiation patch 2, electro-magnetic bandgap irradiation structure 4, impedance matching input transmission line 5; Opening convex radiation patch 2 lower ends link to each other with impedance matching input transmission line 5; The lower surface of little belt substrate 1 is provided with and impedance matching input transmission line 5 and electro-magnetic bandgap irradiation structure 4 corresponding rectangular metal ground plates 6; Electro-magnetic bandgap radiating element 3 is the square-shaped metal plate, and the middle punching of square-shaped metal plate is also passed little belt substrate 1 and rectangular metal ground plate 6.
Described little belt substrate 1 is the Taconic-RF-35 material.The length of described little belt substrate 1 is 50mm～52mm, and width is 38mm～40mm.Described electro-magnetic bandgap radiating element 3 is a square, and the square length of side is 4mm～4.2mm.Spacing between the described electro-magnetic bandgap radiating element 3 equates that spacing is 0.2mm～0.3mm.The radius of circular hole is 0.4mm～0.6mm in the middle of the described electro-magnetic bandgap radiating element 3.Described opening convex radiation patch 2 adopts feed microstrip line to be connected with impedance matching input transmission line 5, and characteristic impedance is 50 Ω, and the micro belt line width of impedance matching input transmission line 5 is 2.7mm ~ 2.75mm.The equal in length of the length of described rectangular metal ground plate 6 and little belt substrate 1, width are 17mm～18mm.
Opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure:
The selection dielectric constant is 3.5 the little belt substrate of Taconic-RF-35 material, and thickness is 1.52mm.The length of little belt substrate is 51.5mm, and width is 40mm.The length of electro-magnetic bandgap radiating element and wide equating, be 4mm.Spacing between the electro-magnetic bandgap radiating element equates that distance is 0.2mm mutually.The radius of circular hole is 0.5mm in the middle of the electro-magnetic bandgap radiating element.Impedance matching input transmission line adopts feed microstrip line, and characteristic impedance is 50 Ω, and the width of feed port is 3.45mm.The height of described rectangular metal ground plate is 17.7mm.Adopt the R3767CH network analyzer to carried out based on radiation characteristics such as the insertion damage curve of the double-frequency micro-strip antenna of electromagnetic bandgap structure and gains the measurement gained based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure insertion damage curve such as Fig. 3 when 1～8GHz.Visible by Fig. 3, in 1.9125～2.5887GHz scope, insert loss less than-10dB, can cover the whole frequency range of WLAN standard 2.4GHz section 2.40～2.483GHz fully; In 5.1251～6.1445GHz scope, insert loss less than-10dB, can cover the whole frequency range of WLAN standard 5.8GHz section 5.725～5.85GHz fully.Based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure E surface radiation directional diagram such as Fig. 4 when the 2.4GHz, the main lobe gain of antenna reaches 2.8dBi, and-3dB beamwidth is 51 °.Based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure H surface radiation directional diagram such as Fig. 5 when the 2.4GHz, main lobe gain reaches 2.72dBi, and-3dB beamwidth is 52 °.Based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure E surface radiation directional diagram such as Fig. 6 when the 5.8GHz, the main lobe gain of antenna reaches 9.7dBi, and-3dB beamwidth is 64.7 °; Based on the opening convex double-frequency micro-strip antenna of electromagnetic bandgap structure H surface radiation directional diagram such as Fig. 7 when the 5.8GHz, main lobe gain reaches 9.7dBi, and-3dB beamwidth is 63.9 °.
Claims (8)
1. the opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure is characterized in that comprising little belt substrate (1), opening convex radiation patch (2), electro-magnetic bandgap radiating element (3), electro-magnetic bandgap irradiation structure (4), impedance matching input transmission line (5), rectangular metal ground plate (6); 8 electro-magnetic bandgap radiating elements (3) divide classifies non-touching two row's formation electro-magnetic bandgap irradiation structures (4) as; Be respectively equipped with an electro-magnetic bandgap irradiation structure (4) in impedance matching input transmission line (5) both sides; The upper surface of little belt substrate (1) is provided with opening convex radiation patch (2), electro-magnetic bandgap irradiation structure (4), impedance matching input transmission line (5); Opening convex radiation patch (2) lower end links to each other with impedance matching input transmission line (5); The lower surface of little belt substrate (1) is provided with and impedance matching input transmission line (5) and the corresponding rectangular metal ground plate of electro-magnetic bandgap irradiation structure (4) (6); Electro-magnetic bandgap radiating element (3) is the square-shaped metal plate, and the middle punching of square-shaped metal plate is also passed little belt substrate (1) and rectangular metal ground plate (6).
2. a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that described little belt substrate (1) is the Taconic-RF-35 material.
3. a kind of opening convex double-frequency micro-strip antenna as claimed in claim 1 based on electromagnetic bandgap structure, the length that it is characterized in that described little belt substrate (1) is 50mm～52mm, width is 38mm～40mm.
4. a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that described electro-magnetic bandgap radiating element (3) is square, and the square length of side is 4mm～4.2mm.
5. a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that the spacing between the described electro-magnetic bandgap radiating element (3) equates that spacing is 0.2mm～0.3mm.
6. a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that the radius of the middle circular hole of described electro-magnetic bandgap radiating element (3) is 0.4mm～0.6mm.
7. a kind of opening convex double-frequency micro-strip antenna as claimed in claim 1 based on electromagnetic bandgap structure; It is characterized in that described opening convex radiation patch (2) and impedance matching input transmission line (5) adopt feed microstrip line to be connected; Characteristic impedance is 50 Ω, and the micro belt line width of impedance matching input transmission line (5) is 2.7mm ~ 2.75mm.
8. a kind of opening convex double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that the length of described rectangular metal ground plate (6) and the equal in length of little belt substrate (1), and width is 17mm～18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204510823U CN202308313U (en) | 2011-11-15 | 2011-11-15 | Opening convex type double-frequency microstrip antenna based on EBG structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204510823U CN202308313U (en) | 2011-11-15 | 2011-11-15 | Opening convex type double-frequency microstrip antenna based on EBG structure |
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| CN202308313U true CN202308313U (en) | 2012-07-04 |
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| CN2011204510823U Expired - Fee Related CN202308313U (en) | 2011-11-15 | 2011-11-15 | Opening convex type double-frequency microstrip antenna based on EBG structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269646A (en) * | 2014-10-23 | 2015-01-07 | 福建京奥通信技术有限公司 | High isolation microstrip antenna |
| CN107834188A (en) * | 2017-11-27 | 2018-03-23 | 南京华讯方舟通信设备有限公司 | The high-gain Vivaldi antenna elements and aerial array of miniature size |
| CN114050400A (en) * | 2021-11-09 | 2022-02-15 | 中汽创智科技有限公司 | Antenna structure and electronic equipment |
| CN114050400B (en) * | 2021-11-09 | 2024-10-25 | 中汽创智科技有限公司 | Antenna structure and electronic equipment |
-
2011
- 2011-11-15 CN CN2011204510823U patent/CN202308313U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269646A (en) * | 2014-10-23 | 2015-01-07 | 福建京奥通信技术有限公司 | High isolation microstrip antenna |
| CN104269646B (en) * | 2014-10-23 | 2017-03-01 | 福建京奥通信技术有限公司 | High-isolation microstrip antenna |
| CN107834188A (en) * | 2017-11-27 | 2018-03-23 | 南京华讯方舟通信设备有限公司 | The high-gain Vivaldi antenna elements and aerial array of miniature size |
| CN107834188B (en) * | 2017-11-27 | 2023-09-19 | 武汉华讯国蓉科技有限公司 | High-gain Vivaldi antenna unit with miniaturized size and antenna array |
| CN114050400A (en) * | 2021-11-09 | 2022-02-15 | 中汽创智科技有限公司 | Antenna structure and electronic equipment |
| CN114050400B (en) * | 2021-11-09 | 2024-10-25 | 中汽创智科技有限公司 | Antenna structure and electronic equipment |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121115 |