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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- 230000005855 radiation Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 2
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Abstract
本实用新型公开了一种基于电磁带隙结构的开口凸字型双频微带天线。8个电磁带隙辐射单元分列为互不接触的两排构成电磁带隙辐射结构，在阻抗匹配输入传输线两侧分别设有一个电磁带隙辐射结构，微带基板的上表面设有开口凸字型辐射贴片、电磁带隙辐射结构、阻抗匹配输入传输线，开口凸字型辐射贴片下端与阻抗匹配输入传输线相连，微带基板的下表面设有与阻抗匹配输入传输线和电磁带隙辐射结构相对应的矩形金属接地板，电磁带隙辐射单元为正方形金属板，正方形金属板中间打孔并穿过微带基板和矩形金属接地板。本实用新型采用微带天线技术，采用微带线馈电方式，成本低，辐射特性好，结构简单，便于集成，满足无线局域网通信的要求。
The utility model discloses an open convex double-frequency microstrip antenna based on an electromagnetic bandgap structure. Eight electromagnetic bandgap radiation units are arranged in two rows without contact with each other to form an electromagnetic bandgap radiation structure. There is an electromagnetic bandgap radiation structure on both sides of the impedance matching input transmission line, and an opening convex is provided on the upper surface of the microstrip substrate. Font radiation patch, electromagnetic bandgap radiation structure, impedance matching input transmission line, the lower end of the open convex font radiation patch is connected to impedance matching input transmission line, and the lower surface of the microstrip substrate is provided with impedance matching input transmission line and electromagnetic bandgap radiation The structure corresponds to a rectangular metal grounding plate, and the electromagnetic bandgap radiation unit is a square metal plate, and a hole is punched in the middle of the square metal plate and passes through the microstrip substrate and the rectangular metal grounding plate. The utility model adopts microstrip antenna technology and microstrip line feeding mode, has low cost, good radiation characteristics, simple structure, easy integration and meets the 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)
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 (3)
| 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 |
-
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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Granted publication date: 20120704 Termination date: 20121115 |