CN201072805Y - Double-frequency broadband printing antenna - Google Patents
Double-frequency broadband printing antenna Download PDFInfo
- Publication number
- CN201072805Y CN201072805Y CNU2007201528689U CN200720152868U CN201072805Y CN 201072805 Y CN201072805 Y CN 201072805Y CN U2007201528689 U CNU2007201528689 U CN U2007201528689U CN 200720152868 U CN200720152868 U CN 200720152868U CN 201072805 Y CN201072805 Y CN 201072805Y
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- double
- radiant body
- antenna
- frequency broadband
- printed antenna
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Abstract
The utility model discloses a double frequency broadband printed antenna, which comprises a radiator (1), a feed probe (3) and a grounding part (2). The feed probe (3) is connected with the feed part of the radiator (1), signal is fed from the feed probe (3) onto the radiator (1). The feed part of the radiator also comprises a matching circuit (4), the matching circuit (4) comprises a micro-strip line (41) and a short circuit probe (42). The short circuit probe (42) is connected between the micro-strip line (41) and the grounding part (2). On the basis of not increasing the antenna structure complexity and antenna volume, the utility model effectively stretches the bandwidth at the position of a second resonance frequency of the antenna, thus the working frequency band of the antenna can cover frequency range of 2.4/5 to 6 GHz.
Description
Technical field
The utility model relates to a kind of wireless network double-frequency broadband printed antenna, particularly relates to a kind of broadband compact printed antenna of the 2.4/5-6GHz of being applied to double-frequency wireless local area network (LAN).
Background technology
In recent years, the high speed development of wireless communication system has promoted development and the application of miniaturization, broadband/multiband aerial greatly.In numerous antenna product, plane single pole sub antenna is owing to its light weight, low section, simple structure, be easy to numerous advantages such as manufacturing and all obtained broad research and application in academia and industrial quarters.Utilize plane single pole sub antenna realization double-frequency broadband antenna to have now two kinds of implementations are generally arranged: the one, (be applied to the small-print antenna that double frequency WLAN has folding short circuit minor matters at document Small printed antennas with a parasitic foldedshorted-strip for dual-band WLAN, G.S.Chae, Y.Moon and J.S.Lim, " Small printedantennas with a parasitic folded shorted-strip for dual-band WLAN; " Asia-Pacific Microwave Conference Proceedings, December 4-7,2005, vol.4, pp.2607-2609.) and document Modified T-shaped planar monopoleantenna for 2.4/5GHz WLAN applicatiohs (be applied to 2.4/5GHz WLAN and become T shape plane single pole sub antenna) (S.B.Chen, Y.C.Jiao, F.S.Zhang and Q.Z.Liu, " Modified T-shaped planar monopole antenna for 2.4/5GHz WLANapplications; " Asia-Pacific Microwave Conference Proceedings, December 4-7,2005, vol.4, pp.2714-2716.) two the different resonant path of employing that propose in have realized two-frequency operation, but the antenna volume of this structure is bigger.Another kind is (to be applied to the flat plane antenna of radio communication at document Planar Antennas for Wireless Communication, K.L.Wong, Planar Antennas for Wireless Communication.NewYork:Wiley, 2003.) a kind of compact conformation that proposes in, the monopole antenna that working frequency range can cover two frequency ranges of 2.4/5.2GHz; This compact structure is by the planar structure with a vertical element spirally-wound, and two-band work is to realize by preceding two patterns that adopt a resonant path, but this structure only can cover two frequency ranges of 2.4/5.2GHz, and can not cover the 2.4/5-6GHz frequency range.From the dual-band antenna that above prior art realizes based on plane single pole sub antenna at present as can be seen, also lack a kind of working band that can make and cover the 2.4/5-6GHz frequency range, and compact conformation, implementation that volume is little.
Summary of the invention
The technical problem that the utility model solves is to have proposed a kind of working band can cover the 2.4/5-6GHz frequency range, and compact conformation, double-frequency broadband printed antenna that volume is little.
Double-frequency broadband printed antenna of the present utility model comprises: radiant body, feed probes and grounding parts; Feed probes is divided with the current feed department of radiant body and is linked to each other, signal is fed on the radiant body from feed probes, the feed part of its described radiant body also comprises match circuit, and described match circuit comprises: microstrip line and grounding probe, described grounding probe is connected between described microstrip line and the grounding parts.
Preferably, described microstrip line is a bending shape, and for example microstrip line can be down L shaped shape.
Preferably, described radiant body, grounding parts are printed on the two sides of base material respectively, and feed probes and grounding probe pass the base material cross section respectively, and feed probes links to each other with the front end of transmitter or receiver.
Preferably, described radiant body is the snail shape.
Preferably, described radiant body comprises: a plurality of end to end spiral helicine line segments that are in turn connected into.
Preferably, the line segment of described radiant body constitutes inside and outside two coil structures, and the slit is arranged between the Internal and external cycle.
Preferably, the seam in described initial part slit is wide less than other slit, and the seam in other slit is wide to be equated.
Preferably, the width of described end line segment is greater than the width of other line segment, and the width of other line segment equates.
The beneficial effects of the utility model are: the utility model increases a match circuit by the input port at antenna, do not increasing the antenna structure complexity, do not increase on the basis of antenna volume, the input impedance of primary antenna is effectively improved, broadening with the bandwidth efficient at second resonance frequency place of antenna, thereby the working band of antenna can cover the 2.4/5-6GHz frequency range, that is to say, can use the signal that an antenna receives the 2.4/5-6GHz frequency range, reduce the overall dimensions of receiver greatly.Adopt helical antenna as radiant body in addition, and the microstrip line of match circuit is bended, can be so that antenna structure compactness, volume-diminished; And the each side parameter of antenna can be by radiant body wide, the match circuit of the seam in live width, slit of line segment total length, line segment in the position of the line length of microstrip line and grounding probe wait and carry out flexible.
Description of drawings
Fig. 1 is the cross sectional view of the utility model double-frequency broadband printed antenna preferred embodiment;
Fig. 2 is the front view of the utility model double-frequency broadband printed antenna preferred embodiment;
Fig. 3 is that the antenna return loss performance simulation contrasts schematic diagram before and after increasing match circuit.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment the utility model is elaborated.
Printed antenna embodiment of the present utility model as shown in Figure 1, 2, antenna comprise four parts: radiant body 1, grounding parts 2, feed probes 3 and match circuit 4.Radiant body 1 and grounding parts 2 are printed in the two sides of FR4 (epoxy glass fabric copper coated foil plate) base material 5 respectively.Radiant body 1 is a snail shape, is connected in sequence by line segment 111-117 is end to end, and line segment 111-117 constitutes inside and outside two coil structures, and slit 121-125 is arranged between the Internal and external cycle.Except that end line segment 117, the live width of all the other line segment 111-116 is all identical.Except that initial part slit 121,122-125 seam in slit is wide all identical.Widen line segment 117 live widths and reduce slit 111 width and help regulating impedance matching.Feed probes 3 is divided with the current feed department of radiant body 1 and is linked to each other, and signal is fed on the radiant body 1 by feed probes 3, is radiate by radiant body 1.The total length of microstrip line has determined the resonance frequency of antenna on the radiant body 1.In actual applications, feed probes 3 can be connected to transmitter or receiver front end by coaxial fitting 6.Inventive point of the present utility model mainly is partly to have increased a match circuit 4 at the feed of radiant body 1, and this match circuit 4 is made up of one section microstrip line 41 and a grounding probe 42, and grounding probe 42 connects microstrip line 41 and grounding parts 2.Feed probes 3 and grounding probe 42 pass the base material cross section respectively.This match circuit can greatly improve the antenna work bandwidth.The live width of this match circuit, the position of line length and grounding probe all can influence the antenna standing wave ratio performance.In the utility model, the microstrip line in the match circuit 4 41 can also be bended, for example bending becomes down L shaped shape, can dwindle the overall dimensions of antenna like this, and bends this microstrip line to the antenna performance influence not quite.
Fig. 3 is the return loss simulation result contrast schematic diagram that increases match circuit front and back antenna.Dotted line is the return loss simulation result of antenna when not having match circuit among the figure, the return loss simulation result of antenna when solid line is the utility model increase match circuit.As seen from the figure, after the input of antenna has increased matching network, antenna is improved in the coupling of low-frequency range, but bandwidth does not obtain broadening, at high band, antenna has become two humorously by original list is humorous, and coupling has obtained very big improvement, and the antenna bandwidth of operation has obtained great broadening, can cover the 2.4/5-6GHz whole frequency.
Claims (9)
1. a double-frequency broadband printed antenna comprises: radiant body (1), feed probes (3) and grounding parts (2); Feed probes (3) is divided with the current feed department of radiant body (1) and is linked to each other, signal is fed on the radiant body (1) from feed probes (3), it is characterized in that, the feed part of described radiant body (1) also comprises match circuit (4), described match circuit comprises: microstrip line (41) and grounding probe (42), described grounding probe (42) are connected between described microstrip line (41) and the grounding parts (2).
2. double-frequency broadband printed antenna according to claim 1 is characterized in that, described microstrip line (41) is a bending shape.
3. double-frequency broadband printed antenna according to claim 2 is characterized in that, described microstrip line is for falling L shaped shape.
4. according to claim 1 or 2 or 3 described double-frequency broadband printed antennas, it is characterized in that, described radiant body (1), grounding parts (2) are printed on the two sides of base material (5) respectively, feed probes (3) and grounding probe (42) pass the base material cross section respectively, and feed probes (3) links to each other with the front end of transmitter or receiver.
5. double-frequency broadband printed antenna according to claim 1 is characterized in that, described radiant body (1) is the snail shape.
6. double-frequency broadband printed antenna according to claim 5 is characterized in that, described radiant body (1) comprising: a plurality of end to end spiral helicine line segments (111-117) that are in turn connected into.
7. double-frequency broadband printed antenna according to claim 6 is characterized in that, the line segment (111-117) of described radiant body (1) constitutes inside and outside two coil structures, and slit (121-125) is arranged between the Internal and external cycle.
8. double-frequency broadband printed antenna as claimed in claim 7 is characterized in that, the seam in described initial part slit (121) is wide less than other slit (122-125), and the seam of other slit (122-125) is wide to be equated.
9. double-frequency broadband printed antenna according to claim 6 is characterized in that, the width of described end line segment (117) is greater than the width of other line segment (111-116), and the width of other line segment (111-116) equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201528689U CN201072805Y (en) | 2007-03-13 | 2007-06-14 | Double-frequency broadband printing antenna |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720118934 | 2007-03-13 | ||
| CN200720118934.0 | 2007-03-13 | ||
| CNU2007201528689U CN201072805Y (en) | 2007-03-13 | 2007-06-14 | Double-frequency broadband printing antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072805Y true CN201072805Y (en) | 2008-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201528689U Expired - Fee Related CN201072805Y (en) | 2007-03-13 | 2007-06-14 | Double-frequency broadband printing antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN201072805Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964451A (en) * | 2010-08-13 | 2011-02-02 | 芜湖睿尔科技有限公司 | Low-section mobile communication indoor cover patch antenna |
| CN102074786A (en) * | 2009-11-19 | 2011-05-25 | 雷凌科技股份有限公司 | Double-frequency printed circuit antenna for electronic device |
| CN102931480A (en) * | 2012-11-21 | 2013-02-13 | 江苏联海通信技术有限公司 | Miniature WLAN (Wireless Local Area Network) antenna |
| CN104795626A (en) * | 2014-01-21 | 2015-07-22 | 智易科技股份有限公司 | Double-frequency printed single-pole antenna |
| CN105161855A (en) * | 2015-09-28 | 2015-12-16 | 江苏大学 | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method |
| CN108063310A (en) * | 2017-12-25 | 2018-05-22 | 常州柯特瓦电子有限公司 | A kind of 5G Mid Frequencies small size PCB antenna |
| CN113067124A (en) * | 2019-12-28 | 2021-07-02 | 中国移动通信集团终端有限公司 | Miniaturized Wi-Fi dual-frequency antenna and working method |
| CN114883805A (en) * | 2022-07-08 | 2022-08-09 | 深圳大学 | Miniaturized antenna unit with front-to-back ratio suppression and array thereof |
-
2007
- 2007-06-14 CN CNU2007201528689U patent/CN201072805Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074786A (en) * | 2009-11-19 | 2011-05-25 | 雷凌科技股份有限公司 | Double-frequency printed circuit antenna for electronic device |
| CN102074786B (en) * | 2009-11-19 | 2013-05-08 | 雷凌科技股份有限公司 | Double-frequency printed circuit antenna for electronic device |
| CN101964451A (en) * | 2010-08-13 | 2011-02-02 | 芜湖睿尔科技有限公司 | Low-section mobile communication indoor cover patch antenna |
| CN102931480A (en) * | 2012-11-21 | 2013-02-13 | 江苏联海通信技术有限公司 | Miniature WLAN (Wireless Local Area Network) antenna |
| CN104795626A (en) * | 2014-01-21 | 2015-07-22 | 智易科技股份有限公司 | Double-frequency printed single-pole antenna |
| CN105161855A (en) * | 2015-09-28 | 2015-12-16 | 江苏大学 | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method |
| CN108063310A (en) * | 2017-12-25 | 2018-05-22 | 常州柯特瓦电子有限公司 | A kind of 5G Mid Frequencies small size PCB antenna |
| CN108063310B (en) * | 2017-12-25 | 2023-10-13 | 常州柯特瓦电子有限公司 | 5G medium-frequency small-size PCB antenna |
| CN113067124A (en) * | 2019-12-28 | 2021-07-02 | 中国移动通信集团终端有限公司 | Miniaturized Wi-Fi dual-frequency antenna and working method |
| CN113067124B (en) * | 2019-12-28 | 2022-10-04 | 中国移动通信集团终端有限公司 | Miniaturized Wi-Fi dual-band antenna and working method |
| CN114883805A (en) * | 2022-07-08 | 2022-08-09 | 深圳大学 | Miniaturized antenna unit with front-to-back ratio suppression and array thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20150614 |
|
| EXPY | Termination of patent right or utility model |