CN201927704U - Multi-band patch antenna - Google Patents
Multi-band patch antenna Download PDFInfo
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- CN201927704U CN201927704U CN 201020612873 CN201020612873U CN201927704U CN 201927704 U CN201927704 U CN 201927704U CN 201020612873 CN201020612873 CN 201020612873 CN 201020612873 U CN201020612873 U CN 201020612873U CN 201927704 U CN201927704 U CN 201927704U
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- branch road
- multiband
- radiant body
- paster antenna
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Abstract
The utility model provides a multi-band patch antenna. The multi-band patch antenna comprises a signal feed radiator, an earth feed radiator, and a matching circuit connected with the multi-band antenna, wherein, the signal feed radiator comprises a signal radiation sheet; the signal radiation sheet is connected with a signals feed point to form a feed point exciting unit; the signal radiation sheet comprises a signal radiation main branch, a first branch and a second branch; the first branch and the second branch are connected in parallel to the signal radiation main branch; a T-shaped micro-strip slot for regulating self-impedance of the antenna is formed on the second branch; the earth feed radiator comprises an earth radiation sheet; the earth radiation sheet is connected with an earth feed point to form a parasitic coupling unit; and the earth radiation sheet comprises an earth radiation main branch and a third branch connected with the earth radiation branch. The multi-band patch antenna provided by the utility model has the benefits of small area, low height and wide band.
Description
Technical field
The utility model belongs to communication field, relates in particular to a kind of multiband paster antenna.
Background technology
The most of built-in antenna that adopts of modern age mobile phone and portable mobile termianl product, various thereupon miniaturizations, the built-in microplate antenna of complanation is developed out, the inverted F shaped antenna on the genus plane that be applied more in the flat plane antenna modern age, inverted F shaped antenna generally comprises the first feed-in pin and the second feed-in pin that is set up in parallel, the first feed-in pin is connected with radiating principal with the second feed-in pin, and the first feed-in pin and the second feed-in pin have determined the overall performance of antenna from the area of the height on mainboard ground and radiating principal.For inverted F shaped antenna, the height of its first feed-in pin and the second feed-in pin generally needs greater than 6 millimeters, if antenna need be realized double frequency function, then the area of radiating principal needs greater than 500 square millimeters; If antenna need be realized three frequency functions, then the area of radiating principal needs greater than 700 square millimeters; If antenna need be realized four frequency functions, then the area of radiating principal needs greater than 800 square millimeters; If antenna need be realized five frequency functions, then the area of radiating principal needs greater than 1000 square millimeters.
At present, the function that mobile phone is realized generally all has five frequently, but now mobile phone do all very thin, generally be difficult to satisfy the needed environment of Antenna Design (height is more than 7 millimeters, and area is more than 1000 square millimeters).Therefore, at present wireless terminal product compact and multi-functional application, it is microminiaturized thereupon to make that antenna structure also needs, and satisfies the multiband design.Existing inverted F shaped antenna utilization be the fringing field radiation, its radiance depends on the height and the area of antenna, and is high highly more, area is big more, its radiance will be good more.Therefore, there are shortcomings such as required area is big, support height is high, efficient is low, narrow bandwidth in existing inverted F shaped antenna, can not effectively satisfy the design needs of ultra thin handset.
Summary of the invention
The utility model solves that the existing required area of inverted F shaped antenna is big, support height is high, the technical problem of narrow bandwidth, and a kind of novel multiband paster antenna is provided, and has that area is little, highly low, the technique effect of bandwidth.
The utility model is achieved through the following technical solutions:
A kind of multiband paster antenna, this multiband paster antenna comprise the signal feed radiant body, feed radiant body and the match circuit that is connected with multiband aerial:
Described signal feed radiant body comprises the signal radiation sheet, the signal radiation sheet forms feedback point exciting unit by being connected with signal feed, described signal radiation sheet comprises signal radiation master branch road, first branch road and second branch road, described first branch road and second branch road are parallel with one another in signal radiation master branch road, and described second branch road is provided with the little trough of belt of T type of regulating the antenna direct impedance;
Described ground feed radiant body comprises the eradiation sheet, and the eradiation sheet forms the parasitic couplings unit by being connected with ground feedback point, and described eradiation sheet comprises eradiation master branch road and the 3rd branch road that is connected with the eradiation branch road.
Further, the spacing of described signal feed radiant body and ground feed radiant body is smaller or equal to 3 millimeters.
Further, described signal radiation master branch road is provided with the clearance channel that forms antenna resonance frequency.
Preferably, the resonance frequency of described antenna is the 1800-2100 megahertz.
Further, the track lengths of described signal radiation master branch road is according to the quarter-wave setting of centre frequency 1900 megahertzes, and the track lengths of the 3rd branch road is according to the quarter-wave setting of centre frequency 2000 megahertzes.
Further, described match circuit comprises first electric capacity and first inductance, and an end of first electric capacity is connected with the multiband paster antenna respectively with an end of first inductance, the other end ground connection of first inductance, and the other end of first electric capacity is as the frequency radio-frequency head.
Preferably, be connected with second inductance between described first electric capacity and the frequency radio-frequency head.
Further, the figure of described signal feed radiant body and ground feed radiant body is formed on the surface of ceramic dielectric substrate by spraying.
The multiband paster antenna that the utility model provides, comprise the signal feed radiant body, feed radiant body and the match circuit that is connected with multiband aerial, signal radiation sheet in the described signal feed radiant body is opened in order to form the resonance frequency of antenna, and on second branch road of signal radiation sheet, be provided with the little trough of belt of T type of regulating antenna direct impedance characteristic, so that impedance matching circuit is better realized the impedance conversion of frequency, the eradiation sheet forms the parasitic couplings unit by being connected with ground feedback point.The electromagnetic field that after feedback point exciting unit is received excitation, changes, thereby make the parasitic couplings cell surface produce induced current, and generation can realize the resonance frequency of 1700-2200 megahertz bandwidth, the spread out resonance frequency of the resonance frequency stretched and original feedback point exciting unit of parasitic couplings unit is superimposed, to reach wideer frequency band effect.Further, the multiband paster antenna that the utility model provides, required empty regions is 25 * 8 millimeter, thereby it has on the whole, and area is little, highly low, the beneficial effect of bandwidth.
Description of drawings
Fig. 1 is the multiband paster antenna schematic top plan view that the utility model provides.
Fig. 2 is that schematic diagram is looked on the multiband paster antenna left side that the utility model provides.
Fig. 3 is that schematic diagram is looked on the multiband paster antenna right side that the utility model provides.
Fig. 4 is the multiband paster antenna front-view schematic diagram that the utility model provides.
Fig. 5 is the multiband paster antenna elevational schematic view that the utility model provides.
Fig. 6 is the multiband paster antenna schematic rear view that the utility model provides.
Fig. 7 be the utility model that provide with match circuit schematic diagram multiband paster antenna coupling.
Fig. 8 is the multiband paster antenna standing wave effect schematic diagram that the utility model embodiment provides.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Please refer to shown in Fig. 1-7, a kind of multiband paster antenna 1, this multiband paster antenna comprises signal feed radiant body 21, ground feed radiant body 11 and the match circuit 2 that is connected with multiband aerial, described signal feed radiant body 21 comprises the signal radiation sheet, the signal radiation sheet forms feedback point exciting unit by being connected with signal feed, described signal radiation sheet comprises signal radiation master branch road 221, first branch road 222 and second branch road 223, described first branch road 222 and second branch road 223 are parallel with one another in signal radiation master branch road 221, and described second branch road 223 is provided with the little trough of belt 41 of T type of regulating the antenna direct impedance; Described ground feed radiant body 11 comprises the eradiation sheet, and the eradiation sheet forms the parasitic couplings unit by being connected with ground feedback point, and described eradiation sheet comprises eradiation master branch road 111 and the 3rd branch road 112 that is connected with the eradiation branch road.
The spacing of described signal feed radiant body and ground feed radiant body is smaller or equal to 3 millimeters, adjust the spacing between signal feed radiant body and the ground feed radiant body, the mutual impedance that can change between two radiant bodies is tuning, thereby change the input impedance of whole multiband paster antenna, realize the multifrequencyization of antenna.In the practical application, the spacing between main antenna and the auxilliary antenna is decided on actual debugging.
Described signal radiation master branch road 221 is provided with the clearance channel 31 that forms antenna resonance frequency, change the length of clearance channel 31, make it equal the quarter-wave of centre frequency 1900 megahertzes, thereby produce the resonance frequency of 1800-2100 megahertzes, realize the HFS (double frequency or multifrequency) of antenna.Certainly, according to the actual design needs, can also be arranged to the resonance frequency of other frequency range.By on second branch road 223, offering the little trough of belt 41 of a T type,, thereby make 800 megahertzes or 900 mhz frequencies in Smith chart, be rendered as the high-impedance state capacitive in order to the impedance operator of adjustment antenna self.
The track lengths of described signal radiation master branch road 221 is according to the quarter-wave setting of centre frequency 1900 megahertzes, make it produce resonance frequency about 1900 megahertzes, the 3rd branch road 112 adds the quarter-wave setting of the track lengths of eradiation master branch road 111 according to centre frequency 2000 megahertzes, after being encouraged, the feed exciting unit around it, produces transformable electromagnetic field to external radiation, the parasitic couplings unit is subjected to the influence of variable electromagnetic field, form transformable induced current on its surface, thereby also produce resonance frequency.Two kinds of resonance frequencys that parasitic couplings unit and feed exciting unit produce are superimposed, thereby expand the frequency bandwidth that antenna produces, and realize wideer frequency band.
Described match circuit comprises that an end of first capacitor C and first inductance L, 1, the first electric capacity and an end of first inductance are connected with multiband paster antenna 1 respectively, the other end ground connection of first inductance, and the other end of first electric capacity is as frequency radio-frequency head RF.Utilize this match circuit network, first inductance L 1 by parallel connection becomes high-impedance state perception by the high-impedance state capacitive with 800 megahertzes or 900 mhz frequencies in Smith chart earlier, first capacitor C by parallel connection is pulled to its impedance near the 50 ohmage circle diagrams again, thereby realizes the low-frequency resonance frequency of antenna.As a kind of specific embodiment, the inductance of described first inductance L 1 is the 5.6-10 nanohenry, and the electric capacity of first capacitor C is the 1.2-2.2 pico farad; Certainly, those skilled in the art according to actual needs, the parameter area that can be arranged to other is to satisfy the demand.
Further, promptly first capacitor C and second inductance L 2 are connected to be connected with the second inductance L 2(between described first capacitor C and the frequency radio-frequency head RF), second inductance L 2 of connecting with first capacitor C in the described antenna-matching circuit, mainly be to be used to finely tune the impedance operator of high-frequency resonance frequency and to establish, look concrete debugging enironment and select.In like manner, as a kind of specific embodiment, the inductance of described second inductance L 2 is the 1-2.2 nanohenry.
When not doing impedance matching, the Frequency point impedance of antenna below 900 megahertzes, in Smith chart, be the high-impedance state capacitive, after adopting described first wife's circuit, Frequency point standing wave ratio required below 900 megahertzes can be transferred to mark among Fig. 83 near or littler, specifically please refer to accompanying drawing 8, what transverse axis was represented among the figure is Frequency point, what the longitudinal axis was represented is standing wave ratio, what standing wave ratio was represented is the matching degree of antenna and mainboard radio circuit, 1 representative coupling fully is a perfect condition, generally just relatively good below 3.On all Frequency points in Fig. 8, below 3 or bigger slightly than 3, its whole matching degree is more satisfactory substantially for standing wave ratio.
The figure circuit of described signal feed radiant body 21 and ground feed radiant body 11, can be formed on the surface of ceramic dielectric substrate by the mode of spraying, particularly, can be with reference to the view of all directions among the figure 1-6, be respectively formed at the surface of ceramic dielectric substrate correspondence, at last sinter molding again.The antenna sinter molding encapsulates later on, finishes paster by producing line processing procedure surface mounting technology then, and wherein 51 among Fig. 5 is the fixing point of antenna.
The multiband paster antenna that the utility model provides, comprise the signal feed radiant body, feed radiant body and the match circuit that is connected with multiband aerial, signal radiation sheet in the described signal feed radiant body is opened in order to form the resonance frequency of antenna, and on second branch road of signal radiation sheet, be provided with the little trough of belt of T type of regulating antenna direct impedance characteristic, so that impedance matching circuit is better realized the impedance conversion of frequency, the eradiation sheet forms the parasitic couplings unit by being connected with ground feedback point.The electromagnetic field that after feedback point exciting unit is received excitation, changes, thereby make the parasitic couplings cell surface produce induced current, and generation can realize the resonance frequency of 1700-2200 megahertz bandwidth, the spread out resonance frequency of the resonance frequency stretched and original feedback point exciting unit of parasitic couplings unit is superimposed, to reach wideer frequency band effect.Further, the multiband paster antenna that the utility model provides, required empty regions is 25 * 8 millimeter, thereby it has on the whole, and area is little, highly low, the beneficial effect of bandwidth.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. a multiband paster antenna is characterized in that, this multiband paster antenna comprise the signal feed radiant body, feed radiant body and the match circuit that is connected with multiband aerial:
Described signal feed radiant body comprises the signal radiation sheet, the signal radiation sheet forms feedback point exciting unit by being connected with signal feed, described signal radiation sheet comprises signal radiation master branch road, first branch road and second branch road, described first branch road and second branch road are parallel with one another in signal radiation master branch road, and described second branch road is provided with the little trough of belt of T type of regulating the antenna direct impedance;
Described ground feed radiant body comprises the eradiation sheet, and the eradiation sheet forms the parasitic couplings unit by being connected with ground feedback point, and described eradiation sheet comprises eradiation master branch road and the 3rd branch road that is connected with the eradiation branch road.
2. multiband paster antenna according to claim 1 is characterized in that, the spacing of described signal feed radiant body and ground feed radiant body is smaller or equal to 3 millimeters.
3. multiband paster antenna according to claim 1 is characterized in that, described signal radiation master branch road is provided with the clearance channel that forms antenna resonance frequency.
4. multiband paster antenna according to claim 3 is characterized in that, the resonance frequency of described antenna is the 1800-2100 megahertz.
5. multiband paster antenna according to claim 1, it is characterized in that, the track lengths of described signal radiation master branch road is according to the quarter-wave setting of centre frequency 1900 megahertzes, and the track lengths of the 3rd branch road is according to the quarter-wave setting of centre frequency 2000 megahertzes.
6. multiband paster antenna according to claim 1, it is characterized in that, described match circuit comprises first electric capacity and first inductance, one end of first electric capacity is connected with the multiband paster antenna respectively with an end of first inductance, the other end ground connection of first inductance, the other end of first electric capacity is as the frequency radio-frequency head.
7. multiband paster antenna according to claim 6 is characterized in that, is connected with second inductance between described first electric capacity and the frequency radio-frequency head.
8. multiband paster antenna according to claim 1 is characterized in that, the figure of described signal feed radiant body and ground feed radiant body is formed on the surface of ceramic dielectric substrate by spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020612873 CN201927704U (en) | 2010-11-18 | 2010-11-18 | Multi-band patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020612873 CN201927704U (en) | 2010-11-18 | 2010-11-18 | Multi-band patch antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927704U true CN201927704U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020612873 Expired - Fee Related CN201927704U (en) | 2010-11-18 | 2010-11-18 | Multi-band patch antenna |
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| CN (1) | CN201927704U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544727A (en) * | 2012-01-05 | 2012-07-04 | 广东通宇通讯股份有限公司 | Inductor DC grounding structure for antenna |
| CN103811865A (en) * | 2012-11-01 | 2014-05-21 | 辉达公司 | Multi-band antenna and an electronic device including the same |
| CN104681976A (en) * | 2013-11-30 | 2015-06-03 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device applying antenna structure |
| CN107689485A (en) * | 2016-08-04 | 2018-02-13 | 泰连公司 | Radio communication device with the multiband slot antenna with parasitic antenna |
| CN108321515A (en) * | 2018-01-04 | 2018-07-24 | 瑞声科技(新加坡)有限公司 | A kind of antenna system and mobile terminal |
| CN109546327A (en) * | 2018-12-14 | 2019-03-29 | 惠州Tcl移动通信有限公司 | IFA antenna module, IFA antenna structure and electronic equipment |
| CN110138103A (en) * | 2019-04-17 | 2019-08-16 | 电子科技大学 | A kind of radio frequency micro-energy acquisition device based on three frequency range RECTIFYING ANTENNAs |
-
2010
- 2010-11-18 CN CN 201020612873 patent/CN201927704U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544727A (en) * | 2012-01-05 | 2012-07-04 | 广东通宇通讯股份有限公司 | Inductor DC grounding structure for antenna |
| CN103811865A (en) * | 2012-11-01 | 2014-05-21 | 辉达公司 | Multi-band antenna and an electronic device including the same |
| US9812770B2 (en) | 2012-11-01 | 2017-11-07 | Nvidia Corporation | Antenna integrated with metal chassis |
| CN104681976A (en) * | 2013-11-30 | 2015-06-03 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device applying antenna structure |
| CN104681976B (en) * | 2013-11-30 | 2019-05-21 | 深圳富泰宏精密工业有限公司 | The wireless communication device of antenna structure and the application antenna structure |
| CN107689485A (en) * | 2016-08-04 | 2018-02-13 | 泰连公司 | Radio communication device with the multiband slot antenna with parasitic antenna |
| CN107689485B (en) * | 2016-08-04 | 2021-09-28 | 泰连公司 | Wireless communication device having multi-band slot antenna with parasitic element |
| CN108321515A (en) * | 2018-01-04 | 2018-07-24 | 瑞声科技(新加坡)有限公司 | A kind of antenna system and mobile terminal |
| CN109546327A (en) * | 2018-12-14 | 2019-03-29 | 惠州Tcl移动通信有限公司 | IFA antenna module, IFA antenna structure and electronic equipment |
| CN110138103A (en) * | 2019-04-17 | 2019-08-16 | 电子科技大学 | A kind of radio frequency micro-energy acquisition device based on three frequency range RECTIFYING ANTENNAs |
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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: 20110810 Termination date: 20191118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |