CN202333133U - Dual-frequency microstrip antenna based on electromagnetic band gap structure - Google Patents
Dual-frequency microstrip antenna based on electromagnetic band gap structure Download PDFInfo
- Publication number
- CN202333133U CN202333133U CN2011204510734U CN201120451073U CN202333133U CN 202333133 U CN202333133 U CN 202333133U CN 2011204510734 U CN2011204510734 U CN 2011204510734U CN 201120451073 U CN201120451073 U CN 201120451073U CN 202333133 U CN202333133 U CN 202333133U
- Authority
- CN
- China
- Prior art keywords
- transmission line
- impedance matching
- electro
- input transmission
- matching input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a dual-frequency microstrip antenna based on an electromagnetic band gap structure. Four electromagnetic band gap units are divided into two rows which are not in contact with each other to form an electromagnetic band gap structure; electromagnetic band gap radiation structures are respectively arranged on two sides of an impedance matching input transmission line; an inverted T-shaped radiation patch, the impedance matching input transmission line and the electromagnetic band gap units are arranged on the upper surface of a microstrip base plate; the lower end of the inverted T-shaped radiation patch is connected with the impedance matching input transmission line; a rectangular metal ground plate corresponding to the electromagnetic band gap radiation structures and the impedance matching input transmission line is arranged on the lower surface of the micro-band base plate; the electromagnetic band gap units are square metal plates; and the middles of the square metal plates are punched and penetrate through the micro-band base plate and the rectangular metal ground plate. The dual-frequency micro-band antenna has the advantages of high gain, low loss, capability of dual-frequency operation, low cost and easiness in manufacture, and can satisfy the requirements of a wireless local area network.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of double frequency micro-strip array antenna.
Background technology
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.In order to make microstrip antenna realize two-frequency operation, method commonly used has multi-disc method, multimode monolithic method, loads the monolithic method.But its complex structure, difficulty of processing is big.Consider antenna structure simply to the importance of practical applications, after common microstrip antenna is transformed, can satisfy the requirement of WLAN double frequency.But the module gain of microstrip antenna is lower, and the micro-strip array antenna that therefore normal employing is made up of the microband paste unit obtains bigger gain or realizes specific directivity.Array antenna can realize individual antenna the sophisticated functions that can't realize, have greater flexibility, higher signal volume, can significantly improve the performance of system.
Though ability two-frequency operations such as more existing microstrip antennas such as inverted F shaped antenna on the market; But gain is only less than 8dBi; Directional properties is poor, and loss is big, therefore presses for the requirement that the array antenna that works out a kind of high-gain, low-loss, two-frequency operation satisfies the WLAN communication system.
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 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:
Double-frequency micro-strip antenna based on electromagnetic bandgap structure comprises little belt substrate, the font of falling T radiation patch, electro-magnetic bandgap radiating element, electro-magnetic bandgap irradiation structure, impedance matching input transmission line, rectangular metal ground plate; 4 electro-magnetic bandgap unit branches are classified non-touching two rows as and are constituted electromagnetic bandgap 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 the font of falling T radiation patch, impedance matching input transmission line and electro-magnetic bandgap radiating element; The font of falling T 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 electro-magnetic bandgap irradiation structure and the corresponding rectangular metal ground plate of impedance matching input transmission line, and 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.
The material of described little belt substrate adopts polytetrafluoroethylmaterial material.The length of described little belt substrate is 48mm～51mm, and width is 48mm～51mm.Described electro-magnetic bandgap radiating element is a square, and the square length of side is 8.4mm～8.6mm.The radius of circular hole is 0.6mm～0.8mm in the middle of the described electro-magnetic bandgap radiating element.The described font of falling T 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 20mm～23mm.
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 double-frequency micro-strip antenna of electromagnetic bandgap structure;
Fig. 2 is based on the structure rearview of the double-frequency micro-strip antenna of electromagnetic bandgap structure;
Fig. 3 is based on the insertion damage curve figure of double-frequency micro-strip antenna when 1～8GHz of electromagnetic bandgap structure;
Fig. 4 is based on the antenna pattern of double-frequency micro-strip antenna E face when 2.4GHz of electromagnetic bandgap structure;
Fig. 5 is based on the antenna pattern of double-frequency micro-strip antenna H face when 2.4GHz of electromagnetic bandgap structure;
Fig. 6 is based on the antenna pattern of double-frequency micro-strip antenna E face when 5.2GHz of electromagnetic bandgap structure;
Fig. 7 is based on the antenna pattern of double-frequency micro-strip antenna H face when 5.2GHz of electromagnetic bandgap structure.
Embodiment
Like Fig. 1, shown in 2, comprise little belt substrate 1, the font of falling T 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 double-frequency micro-strip antenna of electromagnetic bandgap structure; 4 electro-magnetic bandgap unit were classified non-touching two rows in 3 minutes as and are constituted electromagnetic bandgap 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 the font of falling T radiation patch 2, impedance matching input transmission line 5 and electro-magnetic bandgap radiating element 4; The font of falling T 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 electro-magnetic bandgap irradiation structure 4 and impedance matching input transmission line 5 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.
The material of described little belt substrate 1 adopts polytetrafluoroethylmaterial material.The length of described little belt substrate 1 is 48mm～51mm, and width is 48mm～51mm.Described electro-magnetic bandgap radiating element 3 is a square, and the square length of side is 8.4mm～8.6mm.The radius of circular hole is 0.6mm～0.8mm in the middle of the described electro-magnetic bandgap radiating element 3.The described font of falling T 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 20mm～23mm.
Double-frequency micro-strip antenna based on electromagnetic bandgap structure:
Selecting dielectric constant is that 4 polytetrafluoroethylmaterial material is made little belt substrate, and thickness is 1mm.The length of little belt substrate is 50mm, and width is 50mm.The total height of the font of falling T radiation patch is 22mm.The length of electro-magnetic bandgap radiating element is 8.5mm, and width is 8.5mm.The radius of circular hole is 0.7mm in the middle of the electro-magnetic bandgap radiating element.The length of rectangular metal ground plate is 50mm, and width is 22mm.Feed port adopts feed microstrip line, and characteristic impedance is 50 Ω, and the width of feed port is 2.73mm.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 double-frequency micro-strip antenna of electromagnetic bandgap structure insertion damage curve such as Fig. 3 when 1～8GHz.Visible by Fig. 3, in 2.095～3.102GHz scope, insert loss less than-10dB, can cover the whole frequency range of WLAN standard 2.4GHz section 2.40～2.483GHz fully; In 4.5652～5.4092GHz scope, insert loss less than-10dB, can cover the whole frequency range of WLAN standard 5.2GHz section 5.15～5.35GHz fully.Based on the 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 2.6dBi, and-3dB beamwidth is 82.2 °.Based on the 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 2.65dBi, and-3dB beamwidth is 82.2 °.Based on the double-frequency micro-strip antenna of electromagnetic bandgap structure E surface radiation directional diagram such as Fig. 6 when the 5.2GHz, the main lobe gain of antenna reaches 3.1dBi, and-3dB beamwidth is 56 °; Based on the double-frequency micro-strip antenna of electromagnetic bandgap structure H surface radiation directional diagram such as Fig. 7 when the 5.2GHz, main lobe gain reaches 3.2dBi, and-3dB beamwidth is 55.6 °.
Claims (7)
1. the double-frequency micro-strip antenna based on electromagnetic bandgap structure is characterized in that comprising little belt substrate (1), the font of falling T 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); 4 electro-magnetic bandgap unit (3) divide classifies non-touching two row's formation electromagnetic bandgap 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 the font of falling T radiation patch (2), impedance matching input transmission line (5) and electro-magnetic bandgap radiating element (4); The font of falling T 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 electro-magnetic bandgap irradiation structure (4) and impedance matching input transmission line (5) 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).
2. a kind of double-frequency micro-strip antenna based on electromagnetic bandgap structure as claimed in claim 1 is characterized in that the material of described little belt substrate (1) adopts polytetrafluoroethylmaterial material.
3. a kind of 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 48mm～51mm, width is 48mm～51mm.
4. a kind of 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 8.4mm～8.6mm.
5. a kind of 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 0.6mm～0.8mm.
6. a kind of double-frequency micro-strip antenna as claimed in claim 1 based on electromagnetic bandgap structure; It is characterized in that the described font of falling T 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.
7. a kind of 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 20mm～23mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204510734U CN202333133U (en) | 2011-11-15 | 2011-11-15 | Dual-frequency microstrip antenna based on electromagnetic band gap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204510734U CN202333133U (en) | 2011-11-15 | 2011-11-15 | Dual-frequency microstrip antenna based on electromagnetic band gap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333133U true CN202333133U (en) | 2012-07-11 |
Family
ID=46445100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204510734U Expired - Fee Related CN202333133U (en) | 2011-11-15 | 2011-11-15 | Dual-frequency microstrip antenna based on electromagnetic band gap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333133U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682625A (en) * | 2012-09-18 | 2014-03-26 | 中兴通讯股份有限公司 | Multiple-input multiple-output antenna and mobile terminal |
| CN103794857A (en) * | 2014-01-18 | 2014-05-14 | 中国计量学院 | Annular double-frequency square groove coplanar patch antenna |
| CN109449594A (en) * | 2018-10-26 | 2019-03-08 | 钟祥博谦信息科技有限公司 | Microstrip antenna |
| CN114552211A (en) * | 2022-03-04 | 2022-05-27 | 电子科技大学 | High-gain multi-beam periodic impedance modulation surface antenna loaded with EBG structure |
-
2011
- 2011-11-15 CN CN2011204510734U patent/CN202333133U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682625A (en) * | 2012-09-18 | 2014-03-26 | 中兴通讯股份有限公司 | Multiple-input multiple-output antenna and mobile terminal |
| CN103682625B (en) * | 2012-09-18 | 2018-03-27 | 中兴通讯股份有限公司 | A kind of multi-input/output antenna and mobile terminal |
| CN103794857A (en) * | 2014-01-18 | 2014-05-14 | 中国计量学院 | Annular double-frequency square groove coplanar patch antenna |
| CN103794857B (en) * | 2014-01-18 | 2015-09-16 | 中国计量学院 | Annular double frequency square groove coplanar patch antennas |
| CN109449594A (en) * | 2018-10-26 | 2019-03-08 | 钟祥博谦信息科技有限公司 | Microstrip antenna |
| CN114552211A (en) * | 2022-03-04 | 2022-05-27 | 电子科技大学 | High-gain multi-beam periodic impedance modulation surface antenna loaded with EBG structure |
| CN114552211B (en) * | 2022-03-04 | 2023-04-18 | 电子科技大学 | High-gain multi-beam periodic impedance modulation surface antenna loaded with EBG structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106299727B (en) | Low mutual coupling 4-unit ultra-wideband MIMO antenna | |
| Sharma et al. | Two port compact MIMO antenna for ISM band applications | |
| CN202797267U (en) | Ultra-wide band microstrip antenna | |
| CN106816713A (en) | Minimized wide-band microstrip antenna | |
| CN102751564B (en) | X wave band double-frequency dielectric resonator antenna based on left-hand material | |
| CN202333133U (en) | Dual-frequency microstrip antenna based on electromagnetic band gap structure | |
| CN103618138A (en) | Miniaturized differential microstrip antenna | |
| CN206850018U (en) | Ultra wide band circular-shaped monopole sub-antenna based on coplanar wave guide feedback | |
| CN202662783U (en) | Broadband microstrip antenna based on pentagonal paster | |
| CN202308312U (en) | Ultra wideband antenna with stop-band characteristic | |
| CN201508914U (en) | Dual-frequency microstrip array antenna | |
| CN101227028B (en) | Double frequency slit antenna of substrate integrated waveguide | |
| CN202308313U (en) | Opening convex type double-frequency microstrip antenna based on EBG structure | |
| CN201590486U (en) | Compact-type high-gain micro-strip array antenna | |
| CN201576746U (en) | Serial-parallel micro-strip array antenna | |
| CN202662811U (en) | Circular slotted dual-frequency microstrip antenna | |
| CN203218448U (en) | Bow-tie wideband microstrip antenna | |
| CN201178135Y (en) | Bi-frequency slit antenna of substrate integrated waveguide | |
| CN202662798U (en) | Shield-shaped pectinate coplanar waveguide single frequency microstrip antenna | |
| CN202662799U (en) | Diamond coplanar multi-band micro-strip antenna | |
| CN202384493U (en) | Coplanar monopole ultra-wideband antenna with double-band rejection characteristic | |
| CN202662812U (en) | Square slot type micro-strip antenna | |
| CN202662791U (en) | Single frequency band microstrip antenna of concave notching | |
| CN202797290U (en) | T-shaped slot-type coplanar double-frequency microstrip antenna | |
| CN202662815U (en) | Multi-band micro-strip antenna with ultra-wideband |
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: 20120711 Termination date: 20121115 |