CN202103661U - Multi-mode multi-frequency handset radio frequency front module - Google Patents
Multi-mode multi-frequency handset radio frequency front module Download PDFInfo
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- CN202103661U CN202103661U CN2011202504917U CN201120250491U CN202103661U CN 202103661 U CN202103661 U CN 202103661U CN 2011202504917 U CN2011202504917 U CN 2011202504917U CN 201120250491 U CN201120250491 U CN 201120250491U CN 202103661 U CN202103661 U CN 202103661U
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Abstract
Provided is a multi-mode multi-frequency handset radio frequency front module, comprising three radio frequency power amplifiers supporting the signals of three frequency ranges, namely, TDB40 and TDB34 and B39, DCS/PCS of GSM standard, and GSM/E-GSM of the GSM standard. The output ends of the three power amplifiers are connected with a SP10T switch used for switching radio frequency signals and providing seven receiving ports for the GSM four-frequency use and TD three-frequency use respectively. The SP10T switch is connected with an antenna via a low pass filter. When in enforcement, the three radio frequency power amplifiers, the SP10T switch, and the LPF (low pass filter) are integrated in one module. The multi-mode multi-frequency handset radio frequency front module can simultaneously cover 4G, 3G and 2G standards. As only one radio frequency switch is adopted, the influence of the switch insertion loss upon the system performance is effectively reduced. Moreover, the multi-mode multi-frequency handset radio frequency front module is small in volume and low in cost.
Description
Technical field
The utility model relates to the RF front-end module technical field, particularly a kind of multimode multi-frequency mobile phone RF front-end module of compatible TD-LTE/TD-SCDMA/GSM network.
Background technology
RF front-end module is can't mainly be comprised radio-frequency power amplifier and RF switch by an integrated important RF component of transceiver in the present mobile phone; Radiofrequency signal after radio-frequency power amplifier mainly is responsible for modulating is amplified to the certain power value, launches through antenna again, and RF switch then mainly switches the emission and the reception of radiofrequency signal;
Develop from present mobile communication, GSM uses the 2G communication standard the most ripe, that network coverage face is the widest, the user is maximum at present.Along with the user to data in mobile phone transmission quantity and transmission speed require increasingly highly, the 3G mobile communication has obtained development at full speed.TD-SCDMA proposes just to have obtained national great attention from the beginning as the 3G standard of China, and communication network is built up in shop, the most at home city of China Mobile at present.In 2010, the user of China TD-SCDMA just reached 3,000 ten thousand, and the user will reach 4,000 ten thousand to estimate this year.Also the released one after another TD-SCDMA dual-mode handset of compatible GSM of domestic cell phone manufacturer; Its RF front-end module framework is as shown in Figure 1; It comprises that the two-way radio frequency amplifies link and a SPnT (hilted broadsword is thrown more) switch; Wherein the GSM/E-GSM frequency range of GSM standard is amplified through GSM LB PA; TD B34 and B39 frequency range then with the shared way RF power amplifier TD/GSM HB PA of the DCS/PSC frequency range of GSM standard, to amplify link and reduce cost through sharing radio frequency, simultaneity factor adopts a SP6T RF switch that radiofrequency signal is switched.
When the 3G technology progress was like a raging fire, the 4G technology had also obtained each national attention, and wherein Japan just provided 4 LTE licence plates as far back as 2009, estimated that just will provide 4G professional to the user end of this year; China has also proposed one's own TD-LTE (Long Term Evolution based on the TD-SCDMA standard in the 4G field; It is the follow-up evolution technology of 3G standard TD-SCDMA; Be a kind of specially for moving the wireless communication standard that high broadband application designs) the 4G standard; Its relative TD-SCDMA 3G standard networking speed is faster, can reach tens times of TD-SCDMA technology, thereby make ubiquitous high speed Internet access become possibility; Domestic manufacturers join the terminal TD-LTE chip that core science and technology has had demonstration, and spreadtrum can be announced terminal base band and the transponder chip of TD-LTE too at the end of this year.The RF front-end module of no less important (FEM) is then always by American-European company monopolizing, and radio-frequency front-end device price is high always.And TD-LTE is as the 4G international standard of a new generation; It must backward compatible existing 3G TD-SCDMA and 2G GSM standard; But the RF front end structure that does not still have suitable compatible TD-LTE/TD-SCDMA/GSM at present; If compatible TD-LTE standard on the basis of existing TD-SCDMA/GSM module, its RF front-end module framework is as shown in Figure 2, and it is except comprising TD-SCDMA/GSM radio-frequency front-end as shown in Figure 1; Also comprise one road TD-LTE radio-frequency power amplifier and a SP2T switch, wherein TD-SCDMA/GSM radio-frequency front-end and TD-LTE radio-frequency power amplifier pass through SP2T.Switch is connected to antenna; Also there is two other problem in the RF front-end module of compatible TD-LTE/TD-SCDMA/GSM standard shown in Figure 2 except SP2T switch of the extra increase of need causes the cost increase.At first since the SP2T switch intrinsic insertion loss, equaled to increase emission of TD-SCDMA/GSM radio-frequency front-end and the decay that receives on the path.For the emission path, the decling phase on the increase emission path is equivalent to the emission effciency that has reduced radio-frequency power amplifier when having reduced transmitting power, and this is unacceptable to the exigent 3G of efficient system; The adding of SP2T switch is equivalent to reduce its receiving sensitivity, thereby influences the signal quality that mobile phone receives for receiving path, the requirement of this and 4G standard is runed counter to; In addition; The TD-LTE radio-frequency power amplifier is directly received antenna through the SP2T switch; Because the isolation of SP2T switch is limited, the high-order harmonic wave of the radiofrequency signal after TD-LTE PA amplifies will let out through the SW2 switch, in order to satisfy the requirement of communication standard to leakage power; Just needing increases filter network behind the TD-LTE radio-frequency power amplifier, this can cause the design cost of TD-LTE radio-frequency power amplifier and design complexities to increase.
In sum; Present TD-SCDMA/GSM RF front-end module framework also is not suitable for compatible 4G TD-LTE/TD-SCDMA/GSM standard; And fast-developing suitable RF front end structure of 4G TD-LTE communication system active demand; Each radio frequency that this framework can cover 4G, 3G and the 2G of TD-LTE/TD-SCDMA/GSM simultaneously amplifies link, can reduce the terminal volume of TD-LTE/ TD-SCDMA/GSM, reduces the cycle and the cost of terminal hardware research and development.
Summary of the invention
The problem that the utility model need solve provides a kind of each radio frequency that can cover 4G, 3G and the 2G of TD-LTE/TD-SCDMA/GSM simultaneously and amplifies link and lower-cost multimode multi-frequency mobile phone RF front-end module.
For addressing the above problem, the technical scheme that the utility model is taked is: a kind of multimode multi-frequency mobile phone RF front-end module is provided, comprises: first radio-frequency power amplifier, and it supports TD B40 frequency band signals; Second radio-frequency power amplifier is supported the DCS/PCS frequency band signals of TD B34 B39 and GSM standard simultaneously; The 3rd radio frequency power amplifier, the GSM/E-GSM frequency band signals of support GSM standard; The SP10T switch is connected with said first radio-frequency power amplifier, second radio-frequency power amplifier, the 3rd radio frequency power amplifier output respectively, is used for the switching of radiofrequency signal, provides seven receiving ports to supply GSM four frequencies and TD three to use frequently respectively; The LPF low pass filter is connected with the SP10T output switching terminal, and the SP10T switch connects antenna through this low pass filter, is used for the above harmonic signal of filtering 3GHz.
A kind of preferred scheme is that said first radio-frequency power amplifier, second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one; SP10T switch and LPF low pass filter and above-mentioned three power amplifiers are integrated in one.
Another kind of preferred scheme does, said second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one, and first radio-frequency power amplifier is provided with separately; Wherein, SP10T switch and LPF low pass filter and second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one.
Compared with prior art, the beneficial effect of the utility model is:
(1) the utility model adopts a SP10T switch to be used to switch radiofrequency signal; And 7 receiving ports are provided; Supply GSM four frequencies and TD three to use frequently respectively; Cooperation can be supported the radio-frequency power amplifier of the DCS/PCS frequency range of TD B34, B39 and GSM standard simultaneously, shares radio frequency amplification link thereby TD B34, B39 are reached with the DCS/PCS frequency band signals of GSM standard, has simplified the RF front-end module design; And in addition cooperation is supported TD B40 frequency band signals respectively and is supported two amplifiers of the GSM/E-GSM frequency band signals of GSM standard, makes up the RF front-end module of a compatible TD-LTE/TD-SCDMA/GSM standard of ability while; RF front-end module can cover 4G, 3G, 2G standard simultaneously, only adopts a RF switch, effectively reduces the influence of switch Insertion Loss to systematic function;
(2) adopt the LPF low pass filter in the said module of the utility model, but the above harmonic signal of its filtering 3GHz, thus alleviate filter design requirement to each amplifier output matching network of 4G, 3G and 2G, simplify each Design of Amplifier complexity.
Description of drawings
Fig. 1 is that TD-SCDMA/GSM dual-mode handset RF front-end module is formed sketch map in the prior art;
Fig. 2 is the TD-LTE/TD-SCDMA/GSM RF front-end module figure that makes up based on existing TD-SCDMA/GSM RF front-end module;
Fig. 3 is that the said TD-LTE/TD-SCDMA/GSM RF front-end module first of the utility model is implemented illustration;
Fig. 4 is the said TD-LTE/TD-SCDMA/GSM radio-frequency front-end second embodiment module map of the utility model.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the utility model is done further to specify below in conjunction with accompanying drawing and embodiment.
Like Fig. 3; The multimode multi-frequency mobile phone RF front-end module that present embodiment disclosed comprises: TD-LTE PA (first radio-frequency power amplifier), TD-LTE/TD/GSM HB PA (second radio-frequency power amplifier), GSM LB PA (the 3rd radio frequency power amplifier), SP10T switch and a low pass filter LPF; Wherein TD-LTE PA, TD-LTE/TD/GSM HB PA, GSM LB PA output and SP10T switch join, and the SP10T output switching terminal is received antenna through low pass filter LPF.
Wherein, TD-LTE PA is used to support TD B40 frequency band signals; TD-LTE/TD/GSM HB PA is used to support the DCS/PCS frequency band signals of TD B34 B39 and GSM standard, thereby makes the RF front-end module design simplification through the PA of TD B34 and B39 and the shared radio frequency amplification of the DCS/PCS PA link of GSM standard.GSM LB PA is used to support the GSM/E-GSM frequency band signals of GSM standard.The SP10T switch is used to switch radiofrequency signal, and 7 receiving ports are provided, and supplies GSM four frequencies and TD three to use frequently respectively; The LPF low pass filter is used for the above harmonic signal of filtering 3GHz, thereby alleviates the filtering requirements to each PA output matching network of 4G, 3G and 2G, thereby simplifies the design complexities of PA.
The operation principle of above-mentioned module is following: when using the E-GSM band transmit frequency signal of GSM standard; GSM LB PA work; RF switch SP10T switches to GSM LB PA output; Thereby the E-GSM frequency range radiofrequency signal after GSM LB PA amplifies transfers to low pass filter LPF through switch, filters out high-order harmonic wave by LPF again, launches through antenna then; When the E-GSM of GSM standard RX1 mouth receives signal; Three road PA all do not work, and RF switch SP10T switches to E-GSM RX1 mouth, and the radiofrequency signal that antenna end receives transfers to switch after through LPF; Transfer to E-GSM RX1 port by switch again, be transferred to receiver at last and handle; The emission of other frequency ranges is consistent with the principle that receives principle and E-GSM frequency range.Repeat no more at this.RF front-end module shown in Figure 3 can cover 4G, 3G, 2G standard simultaneously; And only need adopt a RF switch; Thereby reduced of the influence of switch Insertion Loss to systematic function; And be used for the harmonic signal more than the filtering 3GHz through increasing a low pass filter at output switching terminal, thus can alleviate the requirement that front end PA harmonic wave is suppressed, help to simplify the design of RF front-end module.
When the utility model is implemented; Can also TD-LTE PA and TD-LTE/TD/GSM HB PA, GSM LB PA be integrated in the module; Thereby further reduce the volume of radio-frequency front-end system and reduce cost; The embodiment schematic diagram is as shown in Figure 4, and Fig. 4 is identical with working method embodiment illustrated in fig. 3, no longer describes at this.
More than be merely more preferably embodiment of the utility model, what need explanation is, not breaking away under the utility model design prerequisite its any minor variations of doing and being equal to replacement, all should belong to the protection range of the utility model.
Claims (5)
1. multimode multi-frequency mobile phone RF front-end module is characterized in that, comprising:
First radio-frequency power amplifier, it supports TD B40 frequency band signals;
Second radio-frequency power amplifier is supported the DCS/PCS frequency band signals of TD B34 B39 and GSM standard simultaneously;
The 3rd radio frequency power amplifier, the GSM/E-GSM frequency band signals of support GSM standard;
The SP10T switch is connected with said first radio-frequency power amplifier, second radio-frequency power amplifier, the 3rd radio frequency power amplifier output respectively, is used for the switching of radiofrequency signal, provides seven receiving ports to supply GSM four frequencies and TD three to use frequently respectively;
The LPF low pass filter is connected with the SP10T output switching terminal, and the SP10T switch connects antenna through this low pass filter, is used for the above harmonic signal of filtering 3GHz.
2. multimode multi-frequency mobile phone RF front-end module according to claim 1 is characterized in that: said first radio-frequency power amplifier, second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one.
3. multimode multi-frequency mobile phone RF front-end module according to claim 2 is characterized in that,
Said SP10T switch and LPF low pass filter and first radio-frequency power amplifier, second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one.
4. multimode multi-frequency mobile phone RF front-end module according to claim 1 is characterized in that, said second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one, and first radio-frequency power amplifier is provided with separately.
5. multimode multi-frequency mobile phone RF front-end module according to claim 4 is characterized in that: said SP10T switch and LPF low pass filter and second radio-frequency power amplifier, the 3rd radio frequency power amplifier are integrated in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202504917U CN202103661U (en) | 2011-07-15 | 2011-07-15 | Multi-mode multi-frequency handset radio frequency front module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202504917U CN202103661U (en) | 2011-07-15 | 2011-07-15 | Multi-mode multi-frequency handset radio frequency front module |
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| CN202103661U true CN202103661U (en) | 2012-01-04 |
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| CN2011202504917U Expired - Fee Related CN202103661U (en) | 2011-07-15 | 2011-07-15 | Multi-mode multi-frequency handset radio frequency front module |
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| WO2013185666A1 (en) * | 2012-07-11 | 2013-12-19 | 中兴通讯股份有限公司 | Radio-frequency front-end circuit of multiband terminal and multiband terminal |
| WO2013189411A2 (en) * | 2013-06-09 | 2013-12-27 | 中兴通讯股份有限公司 | Communication terminal and method for reducing interferences for communication terminal |
| CN103840845A (en) * | 2012-11-27 | 2014-06-04 | 美国频顺通讯科技公司 | Novel tunable wideband rf transmitter interface |
| CN103974528A (en) * | 2013-01-29 | 2014-08-06 | 联想(北京)有限公司 | Packaging technology, PCB, control method and electronic device |
| TWI492550B (en) * | 2013-02-20 | 2015-07-11 | Micro Mobio Corp | World band radio frequency front end module, system and method thereof |
| CN105099484A (en) * | 2014-05-16 | 2015-11-25 | 美商微频股份有限公司 | Global frequency range RFFE module and system thereof |
| CN105450249A (en) * | 2014-08-30 | 2016-03-30 | 展讯通信（上海）有限公司 | Compatible method for multiple communication modes in mobile terminal and mobile terminal |
| WO2019029625A1 (en) * | 2017-08-09 | 2019-02-14 | 捷开通讯(深圳)有限公司 | Lte frequency band switching device and method, and mobile terminal |
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-
2011
- 2011-07-15 CN CN2011202504917U patent/CN202103661U/en not_active Expired - Fee Related
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| CN103840845A (en) * | 2012-11-27 | 2014-06-04 | 美国频顺通讯科技公司 | Novel tunable wideband rf transmitter interface |
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| TWI492550B (en) * | 2013-02-20 | 2015-07-11 | Micro Mobio Corp | World band radio frequency front end module, system and method thereof |
| WO2013189411A2 (en) * | 2013-06-09 | 2013-12-27 | 中兴通讯股份有限公司 | Communication terminal and method for reducing interferences for communication terminal |
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| US10355738B1 (en) | 2018-03-16 | 2019-07-16 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Multiway switch, radio frequency system, and wireless communication device |
| US10727584B2 (en) | 2018-03-16 | 2020-07-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Multiway switch for transmitting sounding reference signal successively through a set of antennas |
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| US10749562B2 (en) | 2018-03-16 | 2020-08-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Multiway switch, radio frequency system, and wireless communication device |
| US11431356B2 (en) | 2018-07-23 | 2022-08-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Radio frequency system, method for controlling antenna switching, and related products |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20120104 Termination date: 20140715 |
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| EXPY | Termination of patent right or utility model |