CN100411248C - Super thin double polarized micro strip antenna - Google Patents
Super thin double polarized micro strip antenna Download PDFInfo
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- CN100411248C CN100411248C CNB2006100344457A CN200610034445A CN100411248C CN 100411248 C CN100411248 C CN 100411248C CN B2006100344457 A CNB2006100344457 A CN B2006100344457A CN 200610034445 A CN200610034445 A CN 200610034445A CN 100411248 C CN100411248 C CN 100411248C
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Abstract
The present invention relates to a super thin double polarization micro-strip antenna which comprises a radiation unit, a metal bottom plate and a pair of feed parts, wherein the two feed parts are fixedly arranged on the metal bottom plate, and each feed part comprises a feed sheet and an impedance inverter circuit electrically connected with the feed sheet. The radiation unit is supported above the two feed parts. In addition, the radiation unit is provided with at least two V-shaped grooves, the V-shaped grooves are axisymmetrically distributed by taking a central point of the radiation unit, and the angular point of each V-shaped groove is near the central point of the radiation unit. Due to the arrangement of the V-shaped grooves, a current path is extended, and the resonant frequency is lowered. Accordingly, under the condition of unchanging working frequency, the size of the antenna is effectively shortened. The limiting action of the V-shaped grooves to the current on the surface of the radiation unit makes most of the current flow along the direction of a region between two adjacent V-shaped grooves, and thus, the cross polarization ratio is enhanced.
Description
[technical field]
The present invention relates to a kind of super thin double polarized micro strip antenna that is used for mobile communication.
[technical background]
Advantages such as microstrip antenna is because in light weight, and volume is little, the low and low cost of manufacture of section and be subjected to common concern, but itself also there is narrow bandwidth, deficiencies such as cross polarization difference.Fast development along with integrated circuit; require the volume of microstrip antenna more and more littler; performance is more and more excellent; but the reducing of volume can cause problems such as further narrowing down of pattern characteristics (as front and back ratio, the cross polarization etc.) variation and the beamwidth of antenna usually; and after highly being reduced to the limiting value of traditional microstrip antenna; index worsens very serious, and in order to solve this technology barrier, slim broadband microstrip antenna becomes an important directions of research.
China CN2653718Y patent announcement discloses a kind of dual-band and dual-polarization fluting microstrip antenna, it comprises substrate, radiating element, distributing point and ground plate, radiating element is the individual layer square paster that is attached on the substrate, respectively open a parallel narrow groove near two radiating side places, distributing point is positioned on the diagonal of radiating element and departs from the central point of radiating element.
Facts have proved, such scheme not can solve the problem that microstrip antenna exists, and that is to say: existing fluting microstrip antenna can't solve under extremely low height directional diagram index, standing wave index, cross polarization index, front and back than the contradiction between the index.
[summary of the invention]
Purpose of the present invention will overcome above-mentioned deficiency exactly, provides a kind of volume less, the super thin double polarized micro strip antenna of excellent performance.
The objective of the invention is to be achieved through the following technical solutions: this super thin double polarized micro strip antenna, comprise radiating element, metal base plate and two feed parts, described two feeds partly are installed on the metal base plate, each current feed department branch comprises feed tab and the impedance inverter circuit that is electrically connected with feed tab, described radiating element is supported in two feed part tops, in addition, described radiating element offers at least two V-shaped grooves, many V-shaped grooves are symmetrically distributed about the central point center of radiating element, and the angle point of each V-shaped groove is towards the central point of radiating element.
Described feed tab is a L type sheet metal, and two feed tab are spent the placement that is orthogonal in horizontal direction with oblique 45, and antenna is carried out the capacitive coupling excitation.
Described each impedance inverter circuit comprises at least two joint impedance transformers.
Described radiating element is or the approximate square that is.
The angle of described V-shaped groove is less than 180 degree, so that V-shaped groove does not form straight trough.
The angle of described V-shaped groove is the 360/n degree, and wherein n is the V-shaped groove number, and n is greater than 2.
Described radiating element can be set on the single face microwave substrate, and this single face microwave substrate is risen by some supports support that are connected on the metal base plate.
Described feed part can be installed on the insulated substrate, and this insulated substrate is installed on the metal base plate.
The space length of described radiating element and metal base plate is not more than 0.1 centre frequency wavelength.
Described V-shaped groove number is four, and the V-shaped groove angle should be 90 degree mutually, and the length of side of radiating element is 0.2～0.3 centre frequency wavelength, and V-type trough rim length is 0.05～0.15 centre frequency wavelength, and slot width is 0.5～2mm.
Compared with prior art, the present invention possesses following advantage:
1.V being provided with of shape groove prolonged current path, reduced resonance frequency, correspondingly, under the constant situation of resonance frequency, antenna size is effectively shortened.And V-shaped groove has restriction to the radiating element surface current and makes most of electric current flow along region direction between adjacent two V-shaped grooves, thereby improved the cross polarization ratio;
2. adopt the capacitive coupling feed can offset the inductive effect that probe brings, thereby improve stationary wave characteristic.Adopt two L type feed tab along ± 45 ° of direction capacitive coupling quadrature feeds, can make antenna realize ± 45 ° dual polarization.
The present invention is further illustrated below in conjunction with drawings and Examples:
[description of drawings]
Fig. 1 is and 3 D stereo schematic diagram of the present invention;
Fig. 2 is a longitudinal sectional drawing of the present invention;
Fig. 3 is a voltage standing wave ratio curve of the present invention;
Fig. 4 is a directional diagram curve of the present invention.
[embodiment]
See also Fig. 1 and Fig. 2, super thin double polarized micro strip antenna of the present invention comprises that being the approximate square length of side is the radiating element 2 of 1/4 wavelength, metal base plate 4 and a pair of feed part, two feeds partly are installed on the insulated substrate 32,32 of this insulated substrates are installed on the metal base plate 4, each current feed department branch comprises the impedance inverter circuit that a feed tab 31 and an end are electrically connected with feed tab 31, described radiating element 2 is set at thick on the single face microwave substrate 1 of 1mm, four jiaos of this single face microwave substrate 1 are supported by four strutting pieces 5 that are connected on the metal base plate 4, and make the spacing between radiating element 2 and the metal base plate 4 be no more than 0.1 centre frequency wavelength.In addition, described radiating element 2 offers four V-shaped grooves 21, and each V-shaped groove 21 is about the distribution that is centrosymmetric of the central point of radiating element 2, and the angle point of each V-shaped groove 21 is near radiating element 2 central points.
Generally speaking, the angle of V-shaped groove 21 is the 360/n degree, and wherein n is V-shaped groove 21 numbers, and n influences by its number greater than 2, and the angle of V-shaped groove 21 should be more than or equal to 180 degree.Present embodiment is because adopted four V-shaped grooves 21, so the angle of each V-shaped groove 21 is 90 degree.
In response to the size of present embodiment radiating element 2, the length of side of V-shaped groove 21 is set to 0.1 wavelength, and slot width then is 0.5～2mm.
Be broadening bandwidth and realization ± 45 ° dual polarization requirement, two feed tab 31 adopt L type sheet metal, and carry out the capacitive coupling excitation in the oblique 45 degree quadratures placements of horizontal direction.
Described each impedance inverter circuit is provided with four joint impedance transformers 33, because structural symmetry, two impedance transformers 33 are identical, and are printed on the same surface of same insulated substrate 32, the one end is used for being connected with L type feed tab 31, and radiating element 2 is carried out the capacitive coupling excitation; The other end then is connected with coaxial cable 34.
Consult Fig. 3 and Fig. 4, the present invention can have only under the situation of 15mm at the antenna height overall, realizes all technical indicators, comprising: ratio is greater than 20dB before and after realizing, the cross polarization ratio is greater than 15dB, and in 1920MHz～2170MHz scope, voltage standing wave ratio is less than 1.60.
This shows that the present invention overcomes the technology barrier of present microstrip antenna well, can under lower height, realize more excellent index.
Claims (11)
1. super thin double polarized micro strip antenna, comprise radiating element, metal base plate and two feed parts, described two feeds partly are installed on the metal base plate, each current feed department branch comprises feed tab and the impedance inverter circuit that is electrically connected with feed tab, described radiating element is supported in two feed part tops, it is characterized in that: described radiating element offers at least two V-shaped grooves, many V-shaped grooves are symmetrically distributed about the central point center of radiating element, and the angle point of each V-shaped groove is towards the central point of radiating element.
2. super thin double polarized micro strip antenna according to claim 1 is characterized in that: described feed tab is a L type sheet metal, and two feed tab are carried out capacitive coupling to antenna and encouraged in placements that be orthogonal of each oblique 45 degree of horizontal direction.
3. super thin double polarized micro strip antenna according to claim 2 is characterized in that: each impedance inverter circuit comprises at least two joint impedance transformers.
4. super thin double polarized micro strip antenna according to claim 3 is characterized in that: described radiating element is square.
5. according to any described super thin double polarized micro strip antenna of claim 1 to 4, it is characterized in that: the angle of described V-shaped groove is less than 180 degree.
6. according to the super thin double polarized micro strip antenna described in any one of the claim 1 to 4, it is characterized in that: the angle of described V-shaped groove is the 360/n degree, and wherein n is the V-shaped groove number, and n is greater than 2.
7. super thin double polarized micro strip antenna according to claim 6 is characterized in that: described radiating element is set on the single face microwave substrate, and this single face microwave substrate is risen by some supports support that are connected on the metal base plate.
8. super thin double polarized micro strip antenna according to claim 6 is characterized in that: described two feeds part is connected realization with metal base plate by insulated substrate and sets firmly indirectly each other.
9. according to any described super thin double polarized micro strip antenna of claim 1 to 3, it is characterized in that: the space length of described radiating element and metal base plate is not more than 0.1 centre frequency wavelength.
10. super thin double polarized micro strip antenna according to claim 5 is characterized in that: the space length of described radiating element and metal base plate is not more than 0.1 centre frequency wavelength.
11. super thin double polarized micro strip antenna according to claim 6 is characterized in that: the space length of described radiating element and metal base plate is not more than 0.1 centre frequency wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100344457A CN100411248C (en) | 2006-03-20 | 2006-03-20 | Super thin double polarized micro strip antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100344457A CN100411248C (en) | 2006-03-20 | 2006-03-20 | Super thin double polarized micro strip antenna |
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| Publication Number | Publication Date |
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| CN1822438A CN1822438A (en) | 2006-08-23 |
| CN100411248C true CN100411248C (en) | 2008-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100344457A Active CN100411248C (en) | 2006-03-20 | 2006-03-20 | Super thin double polarized micro strip antenna |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2497771A (en) * | 2011-12-19 | 2013-06-26 | Aceaxis Ltd | Patch antenna with an impedance matching transmission line feed arrangement |
| CN103178336B (en) | 2011-12-20 | 2016-08-17 | 刘智佳 | Ultrathin double-frequency microstrip patch antenna configuration RFID label antenna |
| CN103474757A (en) * | 2013-09-11 | 2013-12-25 | 华为技术有限公司 | Antenna system |
| CN104916915A (en) * | 2015-05-28 | 2015-09-16 | 冯赵 | Full-frequency-band navigation antenna |
| CN105428795B (en) * | 2015-12-18 | 2019-02-26 | 宝鸡烽火诺信科技有限公司 | A kind of Miniaturized low-frequency omnidirectional plate antenna |
| CN107611574A (en) * | 2017-07-25 | 2018-01-19 | 西安电子科技大学 | A kind of low section broadband dual polarized antenna of high front and rear ratio |
| CN108346854B (en) * | 2018-02-06 | 2020-09-08 | 中国电子科技集团公司第三十八研究所 | Antenna with coupling feed structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6195063B1 (en) * | 1997-05-30 | 2001-02-27 | Kathrein-Werke Kg | Dual-polarized antenna system |
| CN1336702A (en) * | 2000-05-26 | 2002-02-20 | 索尼国际(欧洲)股份有限公司 | Circularly polarised V-shaped gloove antenna |
| CN2505992Y (en) * | 2001-07-27 | 2002-08-14 | 台湾骏炎科技股份有限公司 | Bipolar gap dipole array antenna |
| CN2872625Y (en) * | 2006-03-20 | 2007-02-21 | 京信通信技术(广州)有限公司 | Double-polarized ultra-thin micro-band antenna |
-
2006
- 2006-03-20 CN CNB2006100344457A patent/CN100411248C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6195063B1 (en) * | 1997-05-30 | 2001-02-27 | Kathrein-Werke Kg | Dual-polarized antenna system |
| CN1336702A (en) * | 2000-05-26 | 2002-02-20 | 索尼国际(欧洲)股份有限公司 | Circularly polarised V-shaped gloove antenna |
| CN2505992Y (en) * | 2001-07-27 | 2002-08-14 | 台湾骏炎科技股份有限公司 | Bipolar gap dipole array antenna |
| CN2872625Y (en) * | 2006-03-20 | 2007-02-21 | 京信通信技术(广州)有限公司 | Double-polarized ultra-thin micro-band antenna |
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| CN1822438A (en) | 2006-08-23 |
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Effective date of registration: 20170122 Address after: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee after: Comba Telecom Systems (China) Co., Ltd. Patentee after: Jingxin Communication Technology (Guangzhou) Co. Ltd. Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Patentee after: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. Address before: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee before: Jingxin Communication Technology (Guangzhou) Co. Ltd. |
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Effective date of registration: 20200120 Address after: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Co-patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Patentee before: Jingxin Communication System (China) Co., Ltd. Co-patentee before: Jingxin Communication System (Guangzhou) Co., Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |
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