CN201937004U - Double G type multiband antenna - Google Patents
Double G type multiband antenna Download PDFInfo
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- CN201937004U CN201937004U CN 201020514803 CN201020514803U CN201937004U CN 201937004 U CN201937004 U CN 201937004U CN 201020514803 CN201020514803 CN 201020514803 CN 201020514803 U CN201020514803 U CN 201020514803U CN 201937004 U CN201937004 U CN 201937004U
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Abstract
The utility model provides a double G type multiband antenna, comprising a main antenna and an auxiliary antenna, wherein the main antenna comprises a main antenna radiation plate and a feed point exciting unit; the feed point exciting unit is formed by connecting the main antenna radiation plate with signal feed points, and comprises a first branch circuit and a second branch circuit which are connected in parallel; as a whole, the first branch circuit and the second circuit which are connected in parallel with a third branch circuit and then connected with the main antenna radiation plate; the auxiliary antenna comprises an auxiliary antenna radiation plate and a parasitic coupling unit which is formed by connecting a ground signal feed point with the auxiliary antenna radiation plate; and the parasitic coupling unit comprises a fourth branch circuit and a fifth branch circuit which are connected in parallel; the fifth branch circuit is further provided with a sub-branch circuit, and as a whole, the fourth branch circuit and the fifth branch circuit which are connected in parallel are connected with the auxiliary antenna radiation plate. In the double G type multiband antenna provided by the utility model, frequency generated by the feed point exciting unit is superposed with the resonance frequency generated by the parasitic coupling unit to realize multi-frequency.
Description
Technical field
The utility model belongs to communication field, relates in particular to a kind of double-G type multifrequency antenna.
Background technology
In present field of wireless communication, the structure of general common terminal G type antenna product as shown in Figure 1, comprise a main antenna and common antenna, described main antenna comprises first branch road 111 and second branch road 112,11 is the signal feed-in point of main antenna, and the radiant body length of general main antenna adopts the quarter-wave design; Slave antenna comprises that a branch road 121,12 is the signal feed-in point of slave antenna.Described slave antenna is mainly used to expand the bandwidth of high frequency, and by and the matching and debugging of main antenna, thereby realize the multiband of high frequency.But, introduce after the coupling of slave antenna, can bring certain element to insert loss, reduce the radiation and the receptivity of antenna; Simultaneously, end product not only requires antenna to realize multifrequencyization in higher frequency band now, and also wish to realize simultaneously the multiband of 800MHz and 900MHz in low frequency part, and the design of said structure is with the design of the quarter-wave of its frequency range centre frequency in low frequency part, only therein near the heart frequency, band bandwidth is not very big to the resonance frequency that produces.Therefore, design is a kind of can realize simultaneously that the double-G type antenna of low-and high-frequency multiband is necessary.
The utility model content
The utility model solves the existing less technical problem of double-G type antenna low-and high-frequency bandwidth, and a kind of double-G type multifrequency antenna is provided, and can realize increasing the technique effect of low-and high-frequency bandwidth simultaneously.
The utility model is achieved through the following technical solutions:
A kind of double-G type multifrequency antenna, this double-G type multifrequency antenna comprises main antenna and auxilliary antenna, described main antenna comprises main antenna radiation fin and feedback point exciting unit, feedback point exciting unit is by the formation that links to each other with signal feed of main antenna radiation fin, described feedback point exciting unit comprises first branch road parallel with one another and second branch road, and first branch road parallel with one another and second branch road are done to be connected with the main antenna radiation fin after as a whole and the 3rd branch road parallel connection; Described auxilliary antenna comprises auxilliary aerial radiation sheet and parasitic couplings unit, the formation that links to each other is put by auxilliary aerial radiation sheet and earth signal feedback in the parasitic couplings unit, described parasitic couplings unit comprises the 4th branch road parallel with one another and the 5th branch road, also be provided with one fen branch road on described the 5th branch road, the 4th branch road parallel with one another is made as a whole and auxilliary aerial radiation sheet with the 5th branch road and is connected.
The track lengths of described first branch road is according to the quarter-wave setting of centre frequency 900MHz, and the track lengths of second branch road is according to the quarter-wave setting of centre frequency 1800MHz.
Described the 3rd branch road extends to the access point of earth signal but does not realize connecting.
Further, the distance between described the 3rd branch road and the earth signal contact point is smaller or equal to 1mm.
The track lengths of described the 4th branch road is according to the quarter-wave setting of centre frequency 1900MHz, and the track lengths of the branch branch road on the 5th branch road and the 5th branch road is according to the quarter-wave setting of centre frequency 850MHz.
Further, the terminal room of described the 4th branch road and the 5th branch road distance is smaller or equal to 3mm.
The spacing of described main antenna and auxilliary antenna is smaller or equal to 3mm.
Further, the spacing of described main antenna and auxilliary antenna is 0.7mm.
Described main antenna radiation fin and auxilliary aerial radiation sheet are flexible print circuit board.
In the double-G type multifrequency antenna that the utility model provides, after the main antenna radiation fin is encouraged, feedback point exciting unit produces vibration, to aerial electromagnetic radiation wave energy, after this moment, auxilliary antenna received the emittance of main antenna, the surface of parasitic couplings unit can produce induced current, form resonance frequency, superimposed with the resonance frequency that feedback point exciting unit produces, thus realize multifrequencyization, increased the low-and high-frequency bandwidth.
Description of drawings
Fig. 1 is the double-G type antenna structure view that prior art provides;
Fig. 2 is the double-G type multiple frequency antenna structure schematic diagram that the utility model embodiment provides;
Fig. 3 is the double-G type antenna that provides of prior art and the coupling schematic diagram of mobile phone radio frequency section;
Fig. 4 is the double-G type multifrequency antenna that provides of the utility model embodiment and the coupling schematic diagram of mobile phone radio frequency section.
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 Figure 2, a kind of double-G type multifrequency antenna, this double-G type multifrequency antenna comprises main antenna and auxilliary antenna, described main antenna comprises main antenna radiation fin 21 and feedback point exciting unit, feedback point exciting unit is by the formation that links to each other with signal feed of main antenna radiation fin, described feedback point exciting unit comprises first branch road 211 parallel with one another and second branch road 212, first branch road 211 parallel with one another and second branch road 212 are done as a wholely to be connected with main antenna radiation fin 21 with the 3rd branch road 213 backs in parallel, and the length of described first branch road 211 and second branch road, 212 to the three branch roads 213 is long; Described auxilliary antenna comprises auxilliary aerial radiation sheet 22 and parasitic couplings unit, the formation that links to each other is put by auxilliary aerial radiation sheet and earth signal feedback in the parasitic couplings unit, described parasitic couplings unit comprises the 4th branch road 221 parallel with one another and the 5th branch road 222, also be provided with one fen branch road 2221 on described the 5th branch road 222, the 4th branch road 221 parallel with one another is made as a whole and auxilliary aerial radiation sheet 22 with the 5th branch road 222 and is connected.
The track lengths of described first branch road 211 is according to the quarter-wave design of centre frequency 900MHz, make the resonance frequency about its generation 900MHz, the track lengths of second branch road 212 is according to the quarter-wave design of centre frequency 1800MHz, make the resonance frequency about its generation 1800MHz, the resonance frequency that first branch road 211 and second branch road 212 is produced by electrical connection combines then, thereby realizes double frequency or multifrequency performance; The 3rd branch road 213 extends to the access point of earth signal but does not realize physical connection, by and earth signal between capacity effect, thereby change the impedance operator of main antenna self, realize better frequency range effect.Capacity effect between two metallic objects and distance are inversely proportional to, and distance is big more, and electric capacity is more little, and the distance between general the 3rd branch road 213 and the earth signal contact point can be determined according to actual debugging situation in 1mm.Further, as preferred embodiment a kind of, afore-mentioned distance is 0.4mm.
The track lengths of described the 4th branch road 221 is according to the quarter-wave design of centre frequency 1900MHz, make the resonance frequency about its generation 1900MHz, the track lengths of the branch branch road 2221 on the 5th branch road 222 and the 5th branch road is according to the quarter-wave design of centre frequency 850MHz, make the resonance frequency about its generation 850MHz, can change the impedance operator and the resonance frequency of auxilliary antenna self by adjusting the space D 1 between the 4th branch road 221 and the 5th branch road 222 terminals.Space D 1 between described the 4th branch road 221 and the 5th branch road 222 terminals is smaller or equal to 3mm; If greater than 3mm, the coupling effect between the 4th branch road and the 5th branch road will reduce and even disappear, and in the practical application, can debug definite according to concrete branch road situation.As a kind of execution mode of the best, the space D 1 between the 4th branch road 221 and the 5th branch road 222 terminals is 2mm.
Further, the space D 2 between main antenna and the auxilliary antenna is adjusted the spacing between main antenna and the auxilliary antenna smaller or equal to 3mm, and the mutual impedance that can change between two antennas is tuning, thereby changes the input impedance of whole double-G type multifrequency antenna, realizes the multifrequencyization of antenna.In the practical application, the spacing between main antenna and the auxilliary antenna is decided on actual debugging, and as a kind of execution mode of the best, the spacing of described main antenna and auxilliary antenna is 0.7mm.
Described main antenna radiation fin and auxilliary aerial radiation sheet can pass through flexible print circuit board, the moulding of five metals steel disc punch die realizes, are preferably flexible print circuit board.
Please refer to the double-G type antenna that prior art shown in Figure 3 provides and the coupling schematic diagram of mobile phone radio frequency section, and the double-G type multifrequency antenna that provides of the utility model embodiment shown in Figure 4 and the coupling schematic diagram of mobile phone radio frequency section.Among Fig. 3 and Fig. 4, what transverse axis was represented is Frequency point, and what the longitudinal axis was represented is standing wave ratio, and what standing wave ratio was represented is the matching degree of antenna and mainboard radio circuit, and 1 representative coupling fully is perfect condition, generally just relatively good below 3.On the 2nd Frequency point in Fig. 3, described standing wave ratio is 4.1003, exceeds distant; And on all Frequency points among Fig. 4, below 3 or bigger slightly than 3, its whole matching degree is than the ideal among Fig. 3 substantially for standing wave ratio.
The passive efficiency of double-G type antenna is as shown in table 1 below in the prior art:
| Frequency (MHz) | Efficient | Frequency (MHz) | Efficient |
| ?820 | 24.73％ | ?1710 | 26.27％ |
| ?830 | 27.13％ | ?1730 | 30.49％ |
| ?840 | 29.70％ | ?1750 | 33.20％ |
| 850 | 35.30％ | 1770 | 35.30％ |
| 860 | 36.16％ | 1790 | 38.84％ |
| 870 | 36.45％ | 1810 | 38.93％ |
| 880 | 38.96％ | 1830 | 38.47％ |
| 890 | 39.95％ | 1850 | 36.70％ |
| 900 | 39.25％ | 1870 | 36.66％ |
| 910 | 38.92％ | 1890 | 37.28％ |
| 920 | 38.92％ | 1910 | 38.40％ |
| 930 | 35.99％ | 1930 | 40.77％ |
| 940 | 35.07％ | 1950 | 39.92％ |
| 950 | 32.59％ | 1970 | 38.79％ |
| 960 | 29.82％ | 1990 | 34.72％ |
And the passive efficiency of the utility model double-G type multifrequency antenna is as shown in table 2 below:
| Frequency (MHz) | Efficient | Frequency (MHz) | Efficient |
| 820 | 30.87％ | 1710 | 44.35％ |
| 830 | 37.92％ | 1730 | 46.68％ |
| 840 | 43.23％ | 1750 | 49.62％ |
| 850 | 46.23％ | 1770 | 51.26％ |
| 860 | 48.78％ | 1790 | 47.84％ |
| 870 | 50.37％ | 1810 | 47.25％ |
| 880 | 50.32％ | 1830 | 46.60％ |
| 890 | 50.80％ | 1850 | 43.15％ |
| 900 | 51.34％ | 1870 | 39.80％ |
| 910 | 51.99％ | 1890 | 36.78％ |
| 920 | 51.55％ | 1910 | 35.51％ |
| 930 | 51.63％ | 1930 | 36.11％ |
| 940 | 52.22％ | 1950 | 37.12％ |
| 950 | 52.92％ | 1970 | 35.79％ |
| 960 | 54.14％ | 1990 | 36.39％ |
From last table 1 and table 2 as can be seen, the whole efficiency height of the double-G type antenna that provides than prior art of the passive efficiency of the double-G type multifrequency antenna that the utility model provides.
In the double-G type multifrequency antenna that the utility model provides, after the main antenna radiation fin is encouraged, feedback point exciting unit produces vibration, to aerial electromagnetic radiation wave energy, after this moment, auxilliary antenna received the emittance of main antenna, the surface of parasitic couplings unit can produce induced current, form resonance frequency, superimposed with the resonance frequency that feedback point exciting unit produces, utilize the tuning of the self-impedance of main antenna and auxilliary antenna and mutual impedance, thereby the input impedance that changes antenna realizes multifrequencyization, has increased the low-and high-frequency bandwidth, further reduce the insertion loss that brings owing to matching element, improved the radiance of antenna.
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 (9)
1. a double-G type multifrequency antenna is characterized in that, this double-G type multifrequency antenna comprises main antenna and auxilliary antenna,
Described main antenna comprises main antenna radiation fin and feedback point exciting unit, feedback point exciting unit is by the formation that links to each other with signal feed of main antenna radiation fin, described feedback point exciting unit comprises first branch road parallel with one another and second branch road, and first branch road parallel with one another and second branch road are done to be connected with the main antenna radiation fin after as a whole and the 3rd branch road parallel connection;
Described auxilliary antenna comprises auxilliary aerial radiation sheet and parasitic couplings unit, the formation that links to each other is put by auxilliary aerial radiation sheet and earth signal feedback in the parasitic couplings unit, described parasitic couplings unit comprises the 4th branch road parallel with one another and the 5th branch road, also be provided with one fen branch road on described the 5th branch road, the 4th branch road parallel with one another is made as a whole and auxilliary aerial radiation sheet with the 5th branch road and is connected.
2. double-G type multifrequency antenna according to claim 1, it is characterized in that, the track lengths of described first branch road is according to the quarter-wave setting of centre frequency 900MHz, and the track lengths of second branch road is according to the quarter-wave setting of centre frequency 1800MHz.
3. double-G type multifrequency antenna according to claim 1 is characterized in that, described the 3rd branch road extends to the access point of earth signal but do not realize connecting.
4. double-G type multifrequency antenna according to claim 3 is characterized in that, the distance between described the 3rd branch road and the earth signal contact point is smaller or equal to 1mm.
5. double-G type multifrequency antenna according to claim 1, it is characterized in that, the track lengths of described the 4th branch road is according to the quarter-wave setting of centre frequency 1900MHz, and the track lengths of the branch branch road on the 5th branch road and the 5th branch road is according to the quarter-wave setting of centre frequency 850MHz.
6. double-G type multifrequency antenna according to claim 5 is characterized in that, the terminal room distance of described the 4th branch road and the 5th branch road is smaller or equal to 3mm.
7. double-G type multifrequency antenna according to claim 1 is characterized in that the spacing of described main antenna and auxilliary antenna is smaller or equal to 3mm.
8. double-G type multifrequency antenna according to claim 7 is characterized in that, the spacing of described main antenna and auxilliary antenna is 0.7mm.
9. double-G type multifrequency antenna according to claim 1 is characterized in that, described main antenna radiation fin and auxilliary aerial radiation sheet are flexible print circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020514803 CN201937004U (en) | 2010-08-27 | 2010-08-27 | Double G type multiband antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020514803 CN201937004U (en) | 2010-08-27 | 2010-08-27 | Double G type multiband antenna |
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| CN201937004U true CN201937004U (en) | 2011-08-17 |
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| CN 201020514803 Expired - Fee Related CN201937004U (en) | 2010-08-27 | 2010-08-27 | Double G type multiband antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102723594A (en) * | 2012-06-12 | 2012-10-10 | 深圳光启创新技术有限公司 | GPRS (general packet radio service) antenna and electronic device |
| CN102800949A (en) * | 2012-07-31 | 2012-11-28 | 深圳光启创新技术有限公司 | GPRS (General Packet Radio Service) antenna and electronic device |
| CN104577300A (en) * | 2013-10-09 | 2015-04-29 | 维沃移动通信有限公司 | Multi-branch mobile terminal antenna and mobile terminal thereof |
| CN105846058A (en) * | 2016-05-19 | 2016-08-10 | 北京邮电大学 | Antenna |
| 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 |
| CN110943289A (en) * | 2019-12-10 | 2020-03-31 | 惠州Tcl移动通信有限公司 | Antenna and mobile terminal |
| CN111326857A (en) * | 2020-03-03 | 2020-06-23 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
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| CN114552170A (en) * | 2020-11-25 | 2022-05-27 | 瑞昱半导体股份有限公司 | Wireless communication device and printed dual-band antenna thereof |
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- 2010-08-27 CN CN 201020514803 patent/CN201937004U/en not_active Expired - Fee Related
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| CN102723594B (en) * | 2012-06-12 | 2015-08-12 | 深圳光启创新技术有限公司 | A kind of GPRS antenna and electronic installation |
| CN102723594A (en) * | 2012-06-12 | 2012-10-10 | 深圳光启创新技术有限公司 | GPRS (general packet radio service) antenna and electronic device |
| CN102800949A (en) * | 2012-07-31 | 2012-11-28 | 深圳光启创新技术有限公司 | GPRS (General Packet Radio Service) antenna and electronic device |
| CN102800949B (en) * | 2012-07-31 | 2015-06-03 | 深圳光启创新技术有限公司 | GPRS (General Packet Radio Service) antenna and electronic device |
| CN104577300B (en) * | 2013-10-09 | 2017-06-23 | 维沃移动通信有限公司 | A kind of multiple-limb mobile terminal antenna and its mobile terminal |
| CN104577300A (en) * | 2013-10-09 | 2015-04-29 | 维沃移动通信有限公司 | Multi-branch mobile terminal antenna and mobile terminal thereof |
| CN105846058A (en) * | 2016-05-19 | 2016-08-10 | 北京邮电大学 | Antenna |
| CN105846058B (en) * | 2016-05-19 | 2019-03-01 | 北京邮电大学 | A kind of antenna |
| 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 |
| CN112448139A (en) * | 2019-08-30 | 2021-03-05 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112448139B (en) * | 2019-08-30 | 2023-12-22 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN110943289A (en) * | 2019-12-10 | 2020-03-31 | 惠州Tcl移动通信有限公司 | Antenna and mobile terminal |
| CN111326857A (en) * | 2020-03-03 | 2020-06-23 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
| CN111326857B (en) * | 2020-03-03 | 2022-10-14 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
| CN114552170A (en) * | 2020-11-25 | 2022-05-27 | 瑞昱半导体股份有限公司 | Wireless communication device and printed dual-band antenna thereof |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20150827 |
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| EXPY | Termination of patent right or utility model |