CN204189957U - A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone - Google Patents
A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone Download PDFInfo
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- CN204189957U CN204189957U CN201420693716.XU CN201420693716U CN204189957U CN 204189957 U CN204189957 U CN 204189957U CN 201420693716 U CN201420693716 U CN 201420693716U CN 204189957 U CN204189957 U CN 204189957U
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Abstract
The utility model relates to a kind of tunable LTE metal edge frame antenna being applied to smart mobile phone, comprises support, is located at LDS cabling on support and tuning device; Described LDS cabling comprises high frequency cabling, low frequency cabling, parasitic cabling and distributing point, the first earth point, the second earth point; Described high frequency cabling, low frequency cabling are all connected with distributing point and realize feed, and low frequency cabling is connected with the first earth point simultaneously; Parasitic cabling is coupled with high and low frequency cabling respectively, and one end that described parasitic cabling is coupled with low frequency cabling is connected to the second earth point by tuning device, and the one end be coupled with high frequency cabling is connected to the first earth point.Antenna cover band described in the utility model is wide, function admirable, and simple for structure, easily realizes.
Description
Technical field
The utility model relates to antenna for mobile phone field, is specifically related to a kind of tunable LTE metal edge frame antenna being applied to smart mobile phone.
Background technology
LTE (Long Term Evolution, Long Term Evolution) project is the evolution of 3G, start from the Toronto meeting of 3GPP in 2004, it is a transition between 3G and 4G technology, the global standards of 3.9G, it improves and enhances the aerial access technology of 3G, adopts OFDM and MIMO as the sole criterion of its wireless network evolution.The peak rate of descending 326Mbit/s and up 86Mbit/s can be provided under 20MHz spectral bandwidth.Improve the performance of Cell Edge User, improve cell capacity and reduce system delay.Under 3G Continuous optimization and 4G evolution general layout, in the face of the wretched insufficiency of frequency spectrum resource, the surge of large discharge business, the corollary equipments such as antenna are introduced new technology by operator as key project.
For antenna designers, conventional mobile phone antenna shortcoming manifests day by day: narrow bandwidth, cannot cover 4G and increase frequency range newly; Be easy to because the number of people and adding of hand cause resonance frequency deviation, degradation in actual use; Mobile phone is increasingly frivolous, antenna space reduces, the problems such as antenna efficiency variation annoying antenna for mobile phone designer always, various miniaturized LTE antenna for mobile phone have become the focus of communication industry research at present, the obvious important in inhibiting of research therefore on antenna for mobile phone miniaturization, multifrequency and direction, broadband.At present, smart mobile phone built-in LTE multifrequency antenna product is based on the 3D form of LDS+ support/FPC+ support, and because the space leaving antenna for is day by day narrow, smart mobile phone design has occurred that Apple iPhone series is the metal edge frame designer trends of representative.
Meanwhile, smart mobile phone is more and more comprehensive to the functional requirement of antenna, and frequency range is to wider future development.Current LTE antenna has required that the scope covered comprises 698MHZ-960MHZ, 1710MHZ-2700MHZ, GPS1575MHZ etc., and according to the general principle of antenna, the volume requirement of antenna also changes accordingly.In today that interior of mobile phone environment is increasingly sophisticated, the method only by being expanded the beamwidth of antenna by force by cabling, coupling etc. seems unrealistic all the more.
Utility model content
For the problems referred to above, the utility model provides a kind of and is applied to the omnidirectional of the tunable LTE frequency range of smart mobile phone, high efficiency broadband metal frame antenna.
The technical solution of the utility model is as follows: a kind of tunable LTE metal edge frame antenna be applied in smart mobile phone, comprises metal edge frame, support, is located at LDS cabling on support and tuning device; Described LDS cabling comprises high frequency cabling, low frequency cabling, parasitic cabling and distributing point, the first earth point, the second earth point; Described high frequency cabling, low frequency cabling are all connected with distributing point and realize feed, and low frequency cabling is connected with the first earth point simultaneously; Parasitic cabling is coupled with high and low frequency cabling respectively, and one end that described parasitic cabling is coupled with low frequency cabling is connected to the second earth point by tuning device, and the one end be coupled with high frequency cabling is connected to the first earth point.
Preferably, tuning device is tunable capacitor.
Preferably, described low frequency cabling comprises yi word pattern cabling and metal edge frame crossbeam, this metal edge frame crossbeam two ends breaking makes it be separated with overall frame and become a part for low frequency cabling, described yi word pattern cabling one termination and metal edge frame crossbeam connect, and the metal edge frame crossbeam other end connects the first earth point.Described high frequency cabling is L-type, and one arm is connected with distributing point, and another arm and low frequency walk line parallel.
Preferably, described parasitic cabling comprise be located at be coupled with for low frequency cabling near low frequency cabling the first parasitic branch, to be located near high frequency cabling for the second parasitic branch of being coupled with high frequency cabling and to be connected between the first parasitic branch and the second parasitic branch for producing separately the trixenie branch of resonance; First, second parasitic branch cabling and junction draw cabling to the first earth point, an end points of the first parasitic branch cabling connects tuning device, by tuning device ground connection.
Preferably, described first parasitic branch shape is corresponding with low frequency cabling, and walks line parallel with low frequency; Described second parasitic branch shape is corresponding with high frequency cabling, and walks line parallel with high frequency.
The utility model compared with prior art, has following apparent feature and advantage: (1) described antenna adds tuning device, and the bandwidth of antenna high band is promoted; Meet the wide band requirement of current antenna, LTE/WCDMA/TD-SCDMA/CDMA/GSM frequency range can be covered completely.(2) described antenna radiation efficiency is high, and active test performance is good, efficiently solves traditional antenna causes hydraulic performance decline problem because expanding bandwidth.(3) described antenna make use of the part of metal edge frame as antenna for mobile phone, and not only firm attractive in appearance and function admirable, improves Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the basic Wiring structure schematic diagram of antenna described in the utility model;
Fig. 2 is antenna embodiment application state structural representation described in the utility model;
Fig. 3 is antenna embodiment described in the utility model VSWR(standing wave when state one) figure;
Fig. 4 is antenna embodiment described in the utility model VSWR(standing wave when state two) figure;
Fig. 5 is the radiation efficiency measured curve figure of antenna embodiment described in the utility model.
Embodiment
Better understand content of the present utility model for the ease of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the utility model is further described in detail.
As shown in Figure 1, 2, the tunable LTE metal edge frame antenna of described smart mobile phone comprises metal edge frame, support, is located at LDS cabling on support and antenna tuning device.Described LDS cabling comprises high frequency cabling 50, low frequency cabling 10, parasitic cabling and the first earth point 1, distributing point 2, adjusts the second earth point 4.Its medium-high frequency cabling 50 connects radio circuit by distributing point 2, and low frequency cabling 10 also connects radio circuit from distributing point 2.Parasitic cabling comprise parasitic branch cabling 20 for being coupled with low frequency cabling 10, for be coupled with high frequency cabling 50 parasitic branch cabling 40, for producing separately the parasitic branch cabling 30 of resonance, parasitic cabling draws ground connection cabling to earth point 1 in the junction of parasitic branch cabling 30 and 40, and connect tuning device at an end points of parasitic branch cabling 20, be connected to earth point 4 by tuning device.Tuning device generally adopts tunable capacitor.
During concrete use, described antenna is by ABS plastic stentplacement lower edge position in mobile phone framework, antenna cabling is by LDS(laser direct forming) processes is on plastic rubber bracket, connect 50 ohm microstrip by distributing point 2 and then be connected with the radio frequency shell foot on cell phone mainboard, the underbeam B both sides of mobile phone metal edge frame arrange breakpoint makes this section separate with all the other metal edge frames.Metal edge frame B and cabling 10 define low frequency cabling, and the two connects at tie point 3 place, and the two can produce a resonance near low frequency end 0.8GHz, and secondary mould will at front end 1.9GHZ place's generation resonance.Parasitic cabling 20 is coupled with low frequency cabling 10, can produce a resonance near 1.7GHz.Parasitic cabling 30 will produce a resonance near 0.7GHz.Parasitic cabling 40 is coupled with the high frequency cabling 50 that distributing point 2 is drawn, and jointly near 2.5GHz, produces a resonance.
During described Antenna Operation, by control tuning device, under making it to be operated in different capacitance states, the resonance near 800MHz and 2.5GHz can be carried out certain skew, real present status once: antenna can cover 824-894MHz, 2.3-2.5GHz frequency range; State two times, antenna cover 880-960MHz, 2.5-2.7GHz frequency range.Comprehensively above-mentioned produced multiple resonance, the beamwidth of antenna described in the utility model finally can cover LTE/WCDMA/TD-SCDMA/CDMA/GSM frequency range, comprise 824-960MHz (GSM850/900/WCDMA5/WCDMA8/CDMA800), 1710-2170MHz (GSM1800/GSM1900/WCDMA1/WCDMA2/TD-A/TD-B/LTE1/LTE3/LTE39), 2300-2400MHz (LTE40), 2500-2690MHZ (LTE7/LTE38/LTE41).
Respectively as shown in Figure 3,4, the efficiency by inputoutput test comparison diagram under two states as shown in Figure 5 for the standing wave pattern of the present embodiment under two states.As can be seen from each figure, when the capacitance of tunable capacitor changes from Cmin to Cmax, high/low frequency resonance can produce skew, realizes the higher but resonance that bandwidth is narrower of efficiency and covers the entirety of all target frequency bands.In actual use, according to the frequency range used in real time, selection mode one or state two can be switched flexibly, thus realize all can reaching higher level of efficiency in each frequency range.Following table is the TRP(total radiant power of this example) and TIS(omnidirectional accept sensitivity) measured data.As can be seen from the table, the data of antenna under active test mode are also very excellent, data can meet the performance requirement of mainstream carrier/cell phone manufacturer on CTA (China Testing Alliance, Chinese quality inspection alliance and quality technology center, middle inspection Warner) or market completely.
The content mentioned in above-described embodiment is the preferred implementation of the utility model, is not to restriction of the present utility model, and under the prerequisite not departing from inventive concept of the present utility model, any apparent replacement is all within protection range of the present utility model.
Claims (6)
1. be applied to a tunable LTE metal edge frame antenna for smart mobile phone, it is characterized in that, comprise metal edge frame, support, be located at LDS cabling on support and tuning device; Described LDS cabling comprises high frequency cabling, low frequency cabling, parasitic cabling and distributing point, the first earth point, the second earth point; Described high frequency cabling, low frequency cabling are all connected with distributing point and realize feed, and low frequency cabling is connected with the first earth point simultaneously; Parasitic cabling is coupled with high and low frequency cabling respectively, and one end that described parasitic cabling is coupled with low frequency cabling is connected to the second earth point by tuning device, and the one end be coupled with high frequency cabling is connected to the first earth point.
2. the tunable LTE metal edge frame antenna being applied to smart mobile phone according to claim 1, is characterized in that: tuning device is tunable capacitor.
3. the tunable LTE metal edge frame antenna being applied to smart mobile phone according to claim 1, it is characterized in that: described low frequency cabling comprises yi word pattern cabling (10) and metal edge frame crossbeam (B), this metal edge frame crossbeam two ends breaking makes it be separated with overall frame and become a part for low frequency cabling, described yi word pattern cabling one termination and metal edge frame crossbeam connect, and the metal edge frame crossbeam other end connects the first earth point.
4. the tunable LTE metal edge frame antenna being applied to smart mobile phone according to claim 1, is characterized in that: described high frequency cabling is L-type, and one arm is connected with distributing point, and another arm and low frequency walk line parallel.
5. the tunable LTE metal edge frame antenna being applied to smart mobile phone according to claim 1, is characterized in that: described parasitic cabling comprise be located at be coupled with for low frequency cabling near low frequency cabling the first parasitic branch (20), be located at neighbouring the second parasitic branch (40) for being coupled with high frequency cabling of high frequency cabling and be connected between the first parasitic branch (20) and the second parasitic branch (40) for producing separately the trixenie branch (30) of resonance; Draw cabling to the first earth point in the junction of first, second parasitic branch cabling (30) and (40), an end points of the first parasitic branch cabling (20) connects tuning device, by tuning device ground connection.
6. the tunable LTE metal edge frame antenna being applied to smart mobile phone according to claim 5, is characterized in that: described first parasitic branch (20) shape is corresponding with low frequency cabling, and walks line parallel with low frequency; Described second parasitic branch (40) shape is corresponding with high frequency cabling, and walks line parallel with high frequency.
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| CN201420693716.XU CN204189957U (en) | 2014-11-18 | 2014-11-18 | A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone |
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| CN201420693716.XU CN204189957U (en) | 2014-11-18 | 2014-11-18 | A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone |
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| CN105006645A (en) * | 2015-08-12 | 2015-10-28 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105024146A (en) * | 2015-08-12 | 2015-11-04 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105161821A (en) * | 2015-08-12 | 2015-12-16 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105186094A (en) * | 2015-09-28 | 2015-12-23 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system and mobile terminal |
| CN106663865A (en) * | 2016-09-27 | 2017-05-10 | 北京小米移动软件有限公司 | Terminal casing and terminal |
| CN106898859A (en) * | 2017-01-19 | 2017-06-27 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
| CN106972273A (en) * | 2017-01-19 | 2017-07-21 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
| CN107112621A (en) * | 2017-05-17 | 2017-08-29 | 广东通宇通讯股份有限公司 | A kind of radiating element and its antenna element and aerial array |
| CN107123856A (en) * | 2017-04-20 | 2017-09-01 | 北京小米移动软件有限公司 | A kind of antenna and mobile terminal |
| CN107204509A (en) * | 2016-03-18 | 2017-09-26 | 北京小米移动软件有限公司 | Electronic equipment and its antenna structure |
| US20170294709A1 (en) | 2016-04-08 | 2017-10-12 | Beijing Xiaomi Mobile Software Co., Ltd. | Antenna for terminal |
| CN107275761A (en) * | 2016-04-08 | 2017-10-20 | 北京小米移动软件有限公司 | The antenna of terminal |
| CN108123213A (en) * | 2016-11-26 | 2018-06-05 | 北京小米移动软件有限公司 | The antenna of terminal |
| CN108598666A (en) * | 2018-05-28 | 2018-09-28 | 北京小米移动软件有限公司 | Terminal shell and terminal |
| CN109149137A (en) * | 2018-09-11 | 2019-01-04 | 深圳市思讯通信技术有限公司 | A kind of built-in antenna mould group and automatic navigator |
| CN112531321A (en) * | 2020-11-27 | 2021-03-19 | 捷开通讯(深圳)有限公司 | Antenna assembly and mobile terminal |
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2014
- 2014-11-18 CN CN201420693716.XU patent/CN204189957U/en not_active Expired - Fee Related
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| CN105024146B (en) * | 2015-08-12 | 2017-09-08 | 宇龙计算机通信科技(深圳)有限公司 | combined antenna system and mobile terminal |
| CN105024146A (en) * | 2015-08-12 | 2015-11-04 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105161821A (en) * | 2015-08-12 | 2015-12-16 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105161821B (en) * | 2015-08-12 | 2018-09-14 | 宇龙计算机通信科技(深圳)有限公司 | combined antenna system and mobile terminal |
| CN105006645A (en) * | 2015-08-12 | 2015-10-28 | 宇龙计算机通信科技(深圳)有限公司 | Combined antenna system and mobile terminal |
| CN105186094A (en) * | 2015-09-28 | 2015-12-23 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system and mobile terminal |
| CN105186094B (en) * | 2015-09-28 | 2019-05-14 | 宇龙计算机通信科技(深圳)有限公司 | Antenna system and mobile terminal |
| CN107204509B (en) * | 2016-03-18 | 2019-12-03 | 北京小米移动软件有限公司 | Electronic equipment and its antenna structure |
| CN107204509A (en) * | 2016-03-18 | 2017-09-26 | 北京小米移动软件有限公司 | Electronic equipment and its antenna structure |
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| CN106898859A (en) * | 2017-01-19 | 2017-06-27 | 瑞声科技(新加坡)有限公司 | Antenna and mobile terminal |
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| CN109149137A (en) * | 2018-09-11 | 2019-01-04 | 深圳市思讯通信技术有限公司 | A kind of built-in antenna mould group and automatic navigator |
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