CN202772878U - Radio frequency front-end transceiver system for multi-standard fully-compatible mobile user terminal chip and application thereof - Google Patents

Abstract

The utility model discloses a radio frequency front-end transceiver system for a multi-standard fully-compatible mobile user terminal chip and an application thereof. The radio frequency front-end transceiver system comprises an LTE diversification receiver, a single frequency synthesizer and an emitter, wherein the LTE diversification receiver is used for carrying out front end treatment at least including track filtering, frequency mixing, variable gain medium frequency and/or low noise amplifying, power detecting and AD converting on a radio frequency signal with a preset frequency spectrum; the single frequency synthesizer is used for carrying out frequency synthesizing treatment at least including multi-channel analog-to-digital frequency splitting, phase discriminating, oscillating, low-pass filtering and modulating on an acquired front end treatment result; and the emitter is used for carrying out frequency conversion treatment at least including radio frequency DA converting, signal attenuating and frequency converting on a frequency synthesized result and carrying out high-, middle- and low-end outputs. The system disclosed by the utility model can overcome the defects in the prior art of high cost, high system complexity, poor compatibility, large occupied space and the like so as to achieve the advantages of low cost, low system complexity, good compatibility, small occupied space and the like.

Description

Radio-frequency front-end receive-transmit system and the application thereof of the complete compatible mobile subscriber terminal chip of many standards

Technical field

The utility model relates to four third-generation mobile communication technical fields, particularly, relates to radio-frequency front-end receive-transmit system and the application thereof of the complete compatible mobile subscriber terminal chip of many standards.

Background technology

Along with the development of smart mobile phone and panel computer, the traffic carrying capacity of Mobile data increases substantially.Timesharing Long Term Evolution (Time Division Long Term Evolution, be called for short TD-LTE, by dealers such as Alcatel-Lucent, Nokia Siemens Networks communication, Datang Telecom, Huawei Technologies, ZTE Corporation, China Mobile, the 4th generation of institute's joint development is 4G mobile communication technology and standard) improved the availability of frequency spectrum, increased the capacity of transmission rate and accessible data.The development of its existing ecosystem is depended in the success or not of LTE technology, puts in place with the enforcement of infrastructure and compares, and transceiver technology must be with equally or faster speed development.

Because the explosive increase of the data use amount anticipated, this impels that operator must effectively use frequency spectrum resource and implements as early as possible the super many LTE technology of frequency range.This is the challenge of a transceiver design.Third generation partner program (3GPP) is responded this challenge with the method for unified Frequency Division Duplexing (FDD) (Frequency Division Duplexing is called for short FDD) and time division duplex (Time Division Duplexing is called for short TDD) technology.At present, wireless communication spectrum (up to 3.8 GHz) is divided into 43 frequency bands, and 1 to 33 frequency range is listed in LTE-FDD, and 33 to 43 LTE-TDD that are listed in.

From the angle of transceiver, the challenge of existence is:

⑴ multiband: numerous LTE frequency band like this necessarily requires multiband transceiver;

⑵ multi-mode: at traditional managing network, such as Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, be called for short WCDMA), EVDO[is EV-DO, three Evolution(evolution) with the abbreviation of Data Only, full name is: CDMA2000 1xEV-DO] TD SDMA (Time Division-Synchronous Code Division Multiple Access, be called for short TD-SCDMA), and code division multiple access (Code Division Multiple Access, be called for short CDMA) and global system for mobile communications (Global System of Mobile communication, be called for short GSM) etc. roaming, require the multi-mode transceiver;

⑶ two technology: two technology transceivers need to be supported TDD and FDD technology simultaneously.

0.7 the transceiver to 2.7 ghz bands need to be processed FDD and TDD technology simultaneously, such as table 1, with the FDD frequency range of support 1-21 and the TDD frequency range of 33-41.Here, need the problem of a large amount of numerical calculation disposal abilities, solve by computational load between allocation base provided with processor and the transceiver processor.For example, transceiver is worn the embedded-type ARM processor, reduces the requirement to Base-Band Processing.Reduce simultaneously power consumption, improve dynamic adjustment capability and accelerated the response time.

Except multi-mode, outside the requirement of multiband, current Multifunctional radio-frequency transceiver also needs following characteristic: low-power consumption, small size, standardized baseband interface, flexibly radio frequency interface, carrier aggregation capacity and with the 3GPP operating such.

Table 1: four generation the wireless communication spectrum allocation table

China Mobile has begun to support at mobile phone Gaussian-filtered minimum shift keying (the Gaussian Filtered Minimum Shift Keying of four frequency ranges, be called for short GMSK)/general packet radio service technology (General Packet Radio Service, be called for short GPRS)/enhanced data rates for gsm evolution technology (Enhanced Data Rate for GSM Evolution, be called for short EDGE) (being GGE), TD-SCDMA, with the TD-LTE standard, be expected at the extensive use of beginning in 2012.

In the face of this market of developing, the problem of some technical elements must solve for competitive.When considering the optimal strategy that this market is competed, must weigh frequency allocation, synchronous voice-and-data transmission, browser object model (Browser Object Model is called for short BOM) cost, performance index.

Although smart mobile phone be enter Chinese 4G LTE market main target at the beginning, the hardware and software development plan also will be considered the segmenting market of other.Consideration also comprises the mature market as Europe and North America, and also zonal emerging market such as the India take TD-LTE as focus of district-share also have to look like softdog, and data card is such does not need other hardware product of voice service.

The design of the hardware and software that these extra factors can affect must be considered with the design object balance for China Mobile.Must avoid the extreme situation take high-end world-class telephony platform as target, such as looking like the energy application system in the high pass of all regions, the chipset of Fujitsu and ST Ericsson.Can effectively solve any and chipset all regions.These chips do not meet cost benefit as middle end product.Preliminary market survey and the conclusion of technical discussion are the zonal mobile phones of optimizing, and have a cost low, high-performance, low current.Such as envelope-tracking DCDC transducer, the characteristics such as antenna tuning/standing wave compensating circuit and close-loop power control, the product that differentiation is designed and solution.

Fig. 1 has shown the Fujitsu MB86Lxxx of Fujitsu family chip system functional block diagram, No. eight reflectors export driving chip external power amplifier, nine the tunnel mainly input and GSM(GSM850, EGSM900, DCS1800 and PCS1900 are supported in five tunnel less important inputs) WCDMA(frequency range I, II, III, IV, V, VI, VIII, IX, X and XI), LTE( FDD frequency range 1,3,4,6,7,8,9,10,11,13,17, and TDD frequency range 38 or 40).

Although it is compatible that above-mentioned solution is claimed with worldwide industrial standard, the mobile phone holder can worldwide roam, but also do not have in the completely specified situation in world standard, so the subject matter of design is that cost is too high, is not suitable in mobile phone, panel computer and the data card of shelves of the middle end.The main cause that cost is high has two, at first because radio frequency input and output more (27) cause chip package large (6.5mm x 9.0mm x 1.0mm), and design are limited by interface quantity.Secondly because numerous radio-frequency front-end amplifiers causes chip area larger, price does not have competitive advantage.

Because 2G second generation mobile phone (referring to Fig. 2) market is very ripe, recycling from hardware and software, and the angle of time to market (TTM) is considered, the system schema of mobile phone is the broadband data functions that increases LTE/3G on the basis of original 2G voice scheme, so the mobile phone solution generally includes 6 functional modules: 4G/3G/2G radio-frequency front-end transceiver, power amplifier (Power Amplifier), baseband processor (Baseband), application system processor (Application Processor), memory (Memory) and power management module (Power Management Unit).The technical problems such as the power consumption of current many standard cell phone and performance are to making one of its reason that can not go on the market on a large scale and promote, are exactly because the single-minded not and refinement of design, many standards that covet, world's type and sacrifice chip performance.

In order to cover TD-LTE, TD-SCDMA and 4 is GSM(Quad-GSM frequently) all frequency ranges, in the radio-frequency front-end receive-transmit system of traditional mobile subscriber terminal chip shown in Figure 3, receiver front end must use SAW (Surface Acoustic Wave) filter (SAW filter) to reduce interfering with each other between the frequency range, 34,38,39 and 40 wave bands, four wave bands need four SAW (Surface Acoustic Wave) filter, the LTE receiver requires variation (diversity) to improve data transfer rate and sensitivity, so other three SAW (Surface Acoustic Wave) filter are given three LTE wave bands, 38,39 and 40 wave bands.For compatible 2 generation mobile phones (referring to Fig. 2), need to support person-to-person communication service (Personal Communications Service, abbreviation PCS) 2 wave bands, dcs (the Distributed Control System of standard, abbreviation DCS) 3 wave bands, enhancement mode global system for mobile communications (the Enhanced Global System for Mobile Communications of standard, be called for short EGSM) 5 wave bands of standard and 8 wave bands of GSM standard, so receiver needs 11 SAW (Surface Acoustic Wave) filter, 11 receive input altogether.

In realizing process of the present utility model, the inventor finds to exist at least in the prior art that cost is high, system complexity is high, poor compatibility with the defective such as take up room greatly.

The utility model content

The purpose of this utility model is, for the problems referred to above, proposes the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards, to realize that cost is low, system complexity is low, the compatible good and little advantage that takes up room.

Another purpose of the present utility model is, propose the application system of the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards, namely comprise at least the radio-frequency front-end system based on the complete compatible mobile subscriber terminal chip of many standards of this radio-frequency front-end receive-transmit system.

For achieving the above object, the technical solution adopted in the utility model is: the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards comprises:

LTE variation receiver, be used for the radiofrequency signal to default frequency spectrum (be 869-2620MHz such as the single-ended receive frequency of antenna), comprise at least tracking filter, mixing, variable-gain intermediate frequency and/or low noise amplification, power survey with the AD conversion operations in arbitrarily multiple front-end processing;

The single-frequency synthesizer is used for carrying out front-end processing gained front-end processing result based on described LTE variation receiver, comprises that at least multimode counts in frequency division, phase demodulation, vibration, low-pass filtering and the modulation operations multiple arbitrarily frequency synthesis processing;

Transmitter, be used for the frequency synthesis result based on described single-frequency synthesizer transmission, at least comprise frequency conversion process any multiple in radio frequency DA conversion, signal attenuation and the frequency conversion operation, and with frequency conversion process gained frequency inverted result (be that the high-frequency signal of 2300-2620MHz, intermediate-freuqncy signal and frequency that frequency be 1880-2025MHz be the low frequency signal of 824-915MHz such as frequency), carry out the output of three ends from high frequency output end, medium frequency output end and low frequency output respectively.

Further, described LTE variation receiver comprising parallel two signal processing channels that arrange and being equipped with power detector between described two signal processing channels;

Each signal processing channel comprise LNA/ VGA, frequency mixer, the PGA/ LPF of successively signal connection and two ADC that walk abreast and arrange, and signal is connected to the tracking filter that is at least Q enhancement mode and/or Q adjustable type of LNA/ VGA output;

The first output of described two ADC, the diversified quadrature I output RXI_diversity that is used separately as LTE variation receiver and diversified quadrature Q output RXQ_diversity or be used as quadrature I output RXI and the receiver quadrature Q output RXQ of LTE receiver; The second output of two ADC links to each other, and is used for the signal of reception from frequency synthesizer as sample frequency;

Described power detector is connected in two signal processing channels between the LNA/VGA output; The output of power detector is used for the power output result of detection.

Further, inner at described tracking filter, be provided with Q value correcting unit in the sheet; Described interior Q value correcting unit comprises LNA, filtration module, local oscillator generator, comparator and numeral rectification central controller; Wherein:

The output of described LNA is connected with the input of filtration module and the first input end of comparator respectively; The output of local oscillator generator is connected with the second input of comparator, and the output of comparator is connected with the input that numeral is corrected central controller, and the output that numeral is corrected central controller is connected with the control end of filtration module.

Further, described frequency synthesizer, comprise with each signal processing channel in two MMD that ADC is connected, the reception local oscillator generator that is connected with frequency mixer in each signal processing channel, the emission local oscillator generator that is connected with described MMD and reception local oscillator generator respectively, the automatic frequency controller, PFD/CP and the Numerically Controlled Oscillator that are connected with emission local oscillator generator successively, and the modulator that is connected with automatic frequency controller and PFD/CP respectively.

Further, described transmitter comprises the intermediate frequency transmitter unit that is connected with the 1880-2025MHz radiofrequency signal output of emission local oscillator generator, the high-frequency emission unit that is connected with the 2300-2620MHz radiofrequency signal output of emission local oscillator generator, and the low frequencies unit that is connected with the low frequency radio frequency signal output part of emission local oscillator generator;

The first input end of described high-frequency emission unit and the first input end of intermediate frequency transmitter unit are transmitter orthogonal input TXI; The second input of high-frequency emission unit and the second input of intermediate frequency transmitter unit are transmitter orthogonal input TXQ.

Further, described high-frequency emission unit comprises parallel two RFDAC that arrange, and the cross-coupled high band transformer of the output of former limit and described two RFDAC;

Described intermediate frequency transmitter unit comprises parallel two RFDAC that arrange, and the cross-coupled medium wave band transformer of the output of former limit and described two RFDAC;

Described low frequencies unit comprises power amplifier driver (PAD), and the low band transformer that is connected with the output of described PAD.

Further, each RFDAC, being used for receiving the clock that is provided by BBIC is the data of ClockBB, comprises the DAC and the frequency mixer that are connected with the BBIC signal successively.

Further, each RFDAC unit also comprises digital control unit, and described digital control unit is connected with DAC and mixer signal respectively;

In the Quad-GSM pattern, described digital control unit is used for adopting the mode of programming, with the data wire disconnection of TD-LTD pattern and TD-SCDMA pattern, mixing and the DA translation function of RFDAC are suspended, only realized LOGEN is come the Hyblid Buffer Amplifier function of signal Lop and Lon

Simultaneously, another technical scheme that the utility model adopts is: the application system based on the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of above-described many standards comprises the radio-frequency front-end system based on the complete compatible mobile subscriber terminal chip of many standards of described radio-frequency front-end receive-transmit system at least;

The radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of these many standards, comprise baseband processing chip (BBIC), be connected, be used for realize the multi-band signal transmitting-receiving with described BBIC signal and based on the radio frequency integrated circuit (RFIC) of described radio-frequency front-end receive-transmit system, the multiband power amplifier (PA) that is connected with described RFIC signal respectively, the high power RF switch that is connected with RFIC and multiband PA signal respectively, and the antenna that is connected with RFIC and high power RF switching signal respectively.

Further, described high power RF switch comprises high power hilted broadsword 5 throw switches (SP5T) at least; Described multiband PA comprises that parallel signal is connected to 34 and 49 wave band PA, 38 and 40 wave band PA and the 800-900MHz wave band PA between RFIC and the SP5T.

Radio-frequency front-end receive-transmit system and the application thereof of the complete compatible mobile subscriber terminal chip of many standards of each embodiment of the utility model, because this system comprises: LTE variation receiver, be used for the radiofrequency signal to default frequency spectrum, comprise that at least tracking filter, mixing, variable-gain intermediate frequency and/or low noise amplification, power are surveyed and the front-end processing of AD conversion; The single-frequency synthesizer is used for gained front-end processing result, comprises that at least multimode counts the frequency synthesis processing of frequency division, phase demodulation, vibration, low-pass filtering and modulation; Transmitter is used for gained frequency synthesis result, comprises at least the frequency conversion process of radio frequency DA conversion, signal attenuation and frequency conversion, and carries out high, medium and low three ends output; Hardware cost and package interface be can reduce, the complexity of system, the feasibility of raising system reduced; Thereby can overcome that cost is high in the prior art, system complexity is high, poor compatibility and the large defective that takes up room, with realize that cost is low, system complexity is low, compatible good with take up room little advantage.

Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not consist of restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the operation principle schematic diagram of Fujitsu MB86Lxxx family chip system;

Fig. 2 is the operation principle schematic diagram of the compatible mobile phone of TD-LTE/TD-SCDMA/2G;

Fig. 3 is the operation principle schematic diagram of the radio-frequency front-end system of traditional mobile subscriber terminal chip;

Fig. 4 is the operation principle schematic diagram based on the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards of the present utility model;

Fig. 5 is the operation principle schematic diagram based on the radio-frequency front-end receive-transmit system [being specially TD-LTE/TD-SCDMA radio frequency integrated circuit (RFIC) fore-end] of the complete compatible mobile subscriber terminal chip of many standards of the present utility model;

Fig. 6 is for showing the block diagram of radio frequency filter correction principle in the sheet;

Fig. 7 a is the filtering waveform of different Q value;

Fig. 7 b is that filter Q value is corrected block diagram;

Fig. 7 c is the electrical principle schematic diagram of radio frequency digital to analog converter (RFDAC);

Fig. 7 d is the electrical principle schematic diagram that RFDAC is programmed for buffer;

Fig. 7 e is the electrical principle schematic diagram of tracking filter;

Fig. 7 f is for measuring the electrical principle schematic diagram of adjustable tracking filter based on the Q enhancing of Fig. 7 e;

Fig. 7 g is the electrical principle schematic diagram based on the tracking filter in the Q enhancement mode broadband of Fig. 7 e;

Fig. 8 is the operation principle schematic diagram of TD-SCDMA mode 34 wave bands and 39 waveband radio frequency integrated circuit (RFIC) front end receive-transmit systems;

Fig. 9 is the operation principle schematic diagram of TD-SCDMA pattern 40 waveband radio frequency integrated circuit (RFIC) front end receive-transmit systems;

Figure 10 is the operation principle schematic diagram of TD-LTE mode 38 waveband radio frequency integrated circuit (RFIC) front end receive-transmit systems;

Figure 11 is the operation principle schematic diagram of TD-LTE mode 39 waveband radio frequency integrated circuit (RFIC) front end receive-transmit systems;

Figure 12 is the operation principle schematic diagram of Quad- GSM pattern 2,3,5,8 waveband radio frequency integrated circuit (RFIC) front end receive-transmit systems.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.

Radio-frequency front-end receive-transmit system embodiment

According to the utility model embodiment, such as Fig. 5-shown in Figure 12, the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards is provided, to realize the TD-LTE/TD-SCDMA/Quad-GSM radio-frequency front-end system framework of cost and performance optimization, the LTE-TDD frequency range of concentrating the research frequency spectrum relatively to concentrate, from 1850MHz to 2660MHz, support simultaneously TD-SCDMA(3G), LTE-TDD(4G) and four ripe wave band 2G standards:

Band?2:?1930~1990MHz?RX,?1850-1910MHz?TX?(PCS)；

Band?3:?1805~1880MHz?RX,?1710-1785MHz?TX?(DCS)；

Band?5:?869~894MHz?RX,?824~849MHz?TX?(EGSM)；

Band?8:?925~960MHz?RX,?880~915MHz?TX?(GSM)；

Band?34:?2010~2025MHz?(TD-SCDMA)；

Band?38:?2570~2620MHz?(TD-LTE)；

Band?39F:?1880~1900MHz?(TD-LTE)；

Band?39S:?1900~1920MHz?(TD-SCDMA)；

Band?40:?2300~2400MHz?(TD-SCDMA)。

As shown in Figure 5, the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards of the present embodiment comprises LTE variation receiver, frequency synthesizer and transmitter that signal successively connects.

Wherein, above-mentioned LTE variation receiver, be used for the radiofrequency signal to default frequency spectrum (be 869-2620MHz such as the single-ended receive frequency of antenna), at least comprise front-end processing any multiple in tracking filter, mixing, variable-gain intermediate frequency and/or low noise amplification, power detection and the AD conversion operations, and gained front-end processing result is sent to the single-frequency synthesizer.

Need to prove, this receiver (Receiver) comprises two-way, and two line structures are identical, above receiver indicate variation (Divercity) sign, be special in realizing the standard-required of LTE, utilize variation, multichannel to improve data transfer rate and sensitivity.Receiver section the first module is low noise amplifier (Low Noise Amplifier is called for short LNA), in the low noise while of assurance itself, by the noise of its consistent rear module that gains; Thereafter variable gain module (Varibl Gain Amplifier, be called for short VGA), be used for the gain of control low noise amplifier, satisfy the requirement of receiver dynamic range, namely according to making receiver can regulate according to the size of input signal the size of its gain.Tracking filter (Tracking Filter) is adjusted the filter center frequency according to receiving channels information, and the filtering band disturbs outward, and the frequency mixer after the protection is operated in its linearity scope.The filtered signal power size of power detector perception arranges receiver for baseband processor provides signal power information.Frequency mixer is the frequency signal of local oscillator generator and receive frequency mixing, the frequency signal that receives is converted into low frequency signal, intermediate frequency programmable gain amplifier (Programmable Gain Amplifier, be called for short PGA), further small-signal is amplified to the accessible amplitude of analog to digital converter, ride gain adapts to different input signal amplitudes simultaneously.Low pass filter (Low Pass Filter is called for short LPF) is interference signal outside intermediate frequency filtering band further, guarantees that signal is in the accessible dynamic range of signals of digital to analog converter (Analog to Digital Converter is called for short ADC).Digital to analog converter is analog signal conversion digital signal, processes for digital baseband processor (Baseband is called for short BB).

Above-mentioned single-frequency synthesizer, be used for carrying out front-end processing gained front-end processing result based on above-mentioned LTE variation receiver, at least comprise that multimode counts in frequency division, phase demodulation, vibration, low-pass filtering and the modulation operations multiple arbitrarily frequency synthesis and process, and gained frequency synthesis result is sent to transmitter.

Need to prove, digital control crystal oscillator (Digital ControledControlled Crystal OscilatorOscillator, be called for short DCXO) the outer crystal oscillator of the comparatively accurate sheet of utilization, oscillating circuit is combined and is produced accurate 26MHz frequency signal as the reference source of frequency synthesizer in sheet, voltage controlled oscillator (Voltage COntroled Ocsilator, be called for short VCO) frequency signal that produces through the simulation hair remover except after 2 by multi-mode hair remover (Multi-Modulas Divider, abbreviation MMD) the 26MHz frequency signal after, by phase discriminator (Phase Frequency Detector, abbreviation PFD) reference source with the Numerically Controlled Oscillator generation compares, the difference of their frequency and phase place is by voltage pump (Charge Pump, CP) be converted into voltage, come the voltage of feedback adjusting voltage controlled oscillator, thereby the accurate frequency signal of stable output, assorted the disturbing of introducing for suppressing the many mills of numeral frequency divider, between voltage pump and voltage controlled oscillator, add loop filter (Loop Filter is called for short LP).Automatic frequency control (Automatic Frequency Control is called for short AFC) is carried out coarse adjustment to the frequency of voltage controlled oscillator before locking.Delata-Sigma modulator (Delat-Sigma Modulator is called for short DSM) by adjusting the frequency division multiple of multi-modulus frequency divider, is introduced modulation signal.For the direct modulating mode of the frequency synthesizer of GMSK uses.

Above-mentioned transmitter, be used for carrying out frequency synthesis based on frequency synthesizer and process gained frequency synthesis result, at least comprise frequency conversion process any multiple in radio frequency DA conversion, signal attenuation and the frequency conversion operation, and with frequency conversion process gained frequency inverted result (be that the high-frequency signal of 2300-2620MHz, intermediate-freuqncy signal and frequency that frequency be 1880-2025MHz be the low frequency signal of 824-915MHz such as frequency), carry out the output of three ends from high frequency output end, medium frequency output end and low frequency output respectively.

Need to prove, the quadrature I output of high, medium and low each wave band and Q output are cancelled image signal in the addition of transformer place, owing to being differential design, local-oscillator leakage is herein cancellation also.The local oscillator quadrature I of medium wave band and Q frequency input signal be 1880MHz to 2025MHz, the local oscillator quadrature I of high band and Q frequency input signal are that 23000MHz is to 2620MHz.At TD-SCDMA, TD-LTEh and EDGE pattern, high band and medium wave band part are accepted respectively positive input signal TXI and the TXQ next by baseband processor, and RFDAC is radio frequency digital to analog converter, and the back has a detailed description.In the GMSK pattern, modulation signal is directly accessed by the Delta-Sigma modulator of frequency synthesizer, intermediate frequency (PCS and DCS wave band) RFDAC will have baseband processor to be programmed for buffer amplifier, and shown in Fig. 7 d, and the GMSK signal of low frequency (GSM and EGSM) will have the power amplifier driver directly to export.

Particularly, as shown in Figure 5, above-mentioned LTE variation receiver comprising parallel two signal processing channels that arrange and being equipped with power detector between two signal processing channels; Each signal processing channel comprise LNA/ VGA, frequency mixer, the PGA/ LPF of successively signal connection and two ADC that walk abreast and arrange, and signal is connected to the tracking filter that is at least Q enhancement mode and/or Q adjustable type of LNA/ VGA output;

The first output of two ADC, the diversified quadrature I output RXI_diversity that is used separately as LTE variation receiver and diversified quadrature Q output RXQ_diversity or be used as quadrature I output RXI and the receiver quadrature Q output RXQ of LTE receiver; The second output of two ADC links to each other, and is used for the signal of reception from frequency synthesizer as sample frequency; Power detector is connected in two signal processing channels between the LNA/VGA output; The output of power detector is used for the power output result of detection.

In with the implementation procedure of above-mentioned LTE variation receiver as the multiband receiver of single-ended input, owing to there not being the filter of front end, the front end transconductance stage (Gm) of low noise amplifier (LNA) not only can be amplified small-signal, simultaneously in the face of power up to the band of 0dBm outside during interference signal (Blocker), can not distortion.For this reason, can take the compound transconductance stage of AB class and category-A, the interference signal arriving is to provide more electric current to guarantee by the AB class undistorted, and guarantee small-signal linearity degree and sensitivity by the category-A transconductance stage outside band.

Variable gain amplifier (VGA) is used for guaranteeing the dynamic range of receiver.Radio-frequency filter is positioned at the LNA output, by outputting inductance, electric capacity storehouse and negative transconductance three parts form, 1880～2620MHz target frequency bands relatively is conducive to the realization of higher Q value sheet internal inductance, to such an extent as to frequency is not very high and inductance value need not need too greatly very large chip area, the electric capacity storehouse is used for the adjustment aim frequency range, and negative transconductance can be brought up to whole Q value more than 20.In conjunction with the passive frequency mixer of duty ratio 25% local oscillator signals and intermediate frequency filtering afterwards, the 20MHz out of band signal that integral body reaches 20dBc suppresses ability, can reach the system index requirement simultaneously.

As shown in Figure 5, the said frequencies synthesizer, comprise with each signal processing channel in two MMD that ADC is connected, the reception local oscillator generator that is connected with frequency mixer in each signal processing channel, the emission local oscillator generator that is connected with MMD and reception local oscillator generator respectively, the automatic frequency controller, PFD/CP and the Numerically Controlled Oscillator that are connected with emission local oscillator generator successively, and the modulator that is connected with automatic frequency controller and PFD/CP respectively.

Frequency synthesizer is being used as in the process of single-frequency synthesizer, because TD-LTE and TD-SCDMA are the systems of time division duplex (time division duplex TDD), receiving emission timesharing (not simultaneously) carries out, so receiver and reflector can use same frequency synthesizer, compare minimizing system complex degree with the bifrequency compositor system, reduced cost owing to reducing chip area simultaneously.

As shown in Figure 5, above-mentioned transmitter comprises the intermediate frequency transmitter unit that is connected with the 1880-2025MHz radiofrequency signal output of emission local oscillator generator, the high-frequency emission unit that is connected with the 2300-2620MHz radiofrequency signal output of emission local oscillator generator, and the low frequencies unit that is connected with the low frequency radio frequency signal output part of emission local oscillator generator;

The first input end of the first input end of high-frequency emission unit and intermediate frequency transmitter unit is transmitter orthogonal input TXI; The second input of high-frequency emission unit and the second input of intermediate frequency transmitter unit are transmitter orthogonal input TXQ.

Above-mentioned high-frequency emission unit comprises parallel two RFDAC that arrange, and the cross-coupled high band transformer of the output of former limit and two RFDAC; The intermediate frequency transmitter unit comprises parallel two RFDAC that arrange, and the cross-coupled medium wave band transformer of the output of former limit and two RFDAC; The low frequencies unit comprises power amplifier driver (PAD), and the low band transformer that is connected with the output of PAD.

Here, transmitter can be used as three output reflectors, as shown in Figure 4, because transmitter output spectrum degree of purity, the requirement of efficient and the linearity, sheet are divided into independent high frequency, intermediate frequency and low frequency three tunnel outward, the B38 of high frequency and B40, the B2 of intermediate frequency, B3, B34 and 39, and low frequency B5 and B8.Signalling channel in the sheet also is divided into independent high frequency, intermediate frequency and low frequency three tunnel as a same reason, so that independent optimal design.

Based on the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards shown in Figure 5, can consist of the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards as shown in Figure 4.In Fig. 4, the proportion synthesizer is optimized the fore-end of the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards; For example, can compatible TD-LTE standard, TD-SCDMA standard and Quad-GSM standard etc.

Wherein, receiver uses recoverable, reconfigurable tracking filter in the sheet, like this, wave band 2,3,5,8,34,38,39 and 40, frequency signal share same input from 869MHz to 2620MHz, via the filter of Q enhancement mode in the sheet, according to receiving the frequency range difference signal is selected, compare with prior art shown in Figure 1, reduced 11 SAW (Surface Acoustic Wave) filter, thereby reduced cost; Packing chip has reduced 10 receiver inlets, thereby has reduced the complexity and the feasibility that has improved system of system; Yet such receiver need to be faced the design of high linearity low-noise front end device and the problem that the interior filtering of sheet is processed.

Fig. 6 can show the trimming process of radio-frequency filter in the sheet, the functional module of dark module in trimming process, activating among the figure, this moment, front-end module was programmed for oscillator by increasing the negative transconductance value, output baseband intermediate frequency signal after oscillator frequency and the mixing of frequency synthesizer signal, detect frequency by baseband circuit, set radio-frequency filter by the electric capacity storehouse of adjusting front end, make the front end device leave the concussion state by reducing negative transconductance after setting, enter magnifying state.This moment, radio-frequency filter Q value was the highest, and the selectivity of filter is best, and the Q value of filter can be brought up to about 100 from 3 shown in Fig. 7 a.

Shown in Fig. 7 b, above-mentioned tracking filter inner (being the chip internal of tracking filter, Chip Inside), be provided with Q value correcting unit in the sheet; Q value correcting unit in the sheet comprises low noise amplifier (LNA), filtration module, local oscillator generator (Local Oscilator), comparator and numeral rectification central controller (Digital Calibration Engine); Wherein: the output of LNA is connected with the input of filtration module and the first input end of comparator respectively; The output of local oscillator generator is connected with the second input of comparator, and the output of comparator is connected with the input that numeral is corrected central controller, and the output that numeral is corrected central controller is connected with the control end of filtration module.

In Fig. 7 b, the Q value of tracking filter is proofreaied and correct, the whole trimming process of figure adjustment engine control and sequential, trimming process comprises:

⑴ disconnect the LNA input from antenna, by increasing negative transconductance filter is programmed for oscillator;

⑵ be programmed for local oscillator (being the local oscillator generator) centre frequency of desired frequency band.

Detect the starting of oscillation of oscillator by the medium frequency output end DC direct current biasing of frequency mixer.

Reduce the negative transconductance value, until the front end vibration disappears, record negative transconductance value arranges.

Increasing a fixing negative transconductance value arranges surplus and guarantees that the front end amplification filtering is stable.This moment, the Q value was best.

Shown in Fig. 7 c, each RFDAC, being used for receiving the clock that is provided by BBIC is the data of ClockBB, comprises the DAC and the frequency mixer that are connected with the BBIC signal successively.

Fig. 7 c can show the transmitter circuitry of the RF-DAC formula that above-described embodiment adopts, use the fLO/2 frequency to be used as the sample frequency of DAC, DAC sample frequency 2 frequency multiplication fLO are output signal like this, must filtering, output after can directly superposeing with transmitter output signal, strengthened output signal power, and the above DAC of 3 frequencys multiplication repeats frequency spectrum because frequency is very high, can be by the selectivity filtering of output radio freqnency transformer, system does not need low pass filter like this, the conversion interface module that does not also need current/voltage, thus compare with traditional transmitter, reduced power consumption and noise.Owing to adopting the digital unit design, multiunit weighting can the outer power amplifier of driving chip, so this system does not need power amplifier driver (PAD) module yet.

Shown in Fig. 7 d, each RFDAC unit also comprises digital control unit, and digital control unit is connected with DAC and mixer signal respectively; In the Quad-GSM pattern, digital control unit is used for adopting the mode of programming, with the data wire disconnection of TD-LTD pattern and TD-SCDMA pattern, mixing and the DA translation function of RFDAC are suspended, only realized LOGEN is come the Hyblid Buffer Amplifier function of signal Lop and Lon.

In the Quad-GSM pattern, requirement for the noise that satisfies strict system, also because this mode signal bandwidth 200KHz is narrower, relatively be suitable for the mode of the direct modulating frequency synthesizer of baseband signal, so this mode transmitter does not need digital to analog converter, for with other mode common Mid Frequency (MB) output modules and sheet in transformer, can adopt programmable mode, by digital control unit digital to analog converter is programmed for output buffer.Can disconnect the data wire of other pattern usings, the device of DAC unit access fixed level, such as high level to NMOS, make it to be in conducting state, at this moment, RF-DAC does not have mixing and analog conversion function, only has the Hyblid Buffer Amplifier function of LOGEN being come signal Lop and Lon.

Below be the system block diagram of various different modes, the module that dark functional module need to activate when being this pattern, the module of light color is closed when this pattern, to save electric current.Frequency synthesizer produces the frequency signal of corresponding modes during various pattern, and all receptions and the relevant module of emission all are set to frequency and the bandwidth of this pattern.

In Fig. 7 e and Fig. 7 f, adopt single-ended input to delete altogether Amplifier Design, input adds from the source electrode of device M1, drain electrode output, it the input impedance coupling be the broadband, as long as satisfy 1/g

,

Mutual conductance for M1.But, the shortcoming of deleting altogether design is that noise factor (Noise Figure) is greater than 3dB, so we adopt the design of thermal noise cancellation, increase the device M2 of common source, signal is deleted the utmost point from M2 and is entered, drain electrode output, the very hot noise Vn1 that deletes of M1 deletes utmost point phase invariant via the source electrode of M1 at M2 like this, yet at the drain electrode single spin-echo of M2, via cascade device phase invariant, the phase place of output OUTn is opposite with Vn1, Vn1 is reverse via the drain electrode phase place of M1 simultaneously, can be also opposite with Vn1 in the phase place of output OUTp via the cascade device, the very hot noise Vn1 that deletes of M1 is presented as common-mode noise at difference output end OUTp and OUTn like this, thereby suppresses to offset.In order to make noise cancellation, must satisfy:

；

With

Be the transconductance value of entering apparatus M1 and M2,

With

Be inductance L 1 and the L2 effective impedance at operating frequency f0.Like this, the noise factor of this low noise amplifier can be expressed as:

；

Wherein,

Be device channel thermal noise coefficient.In order to reduce On the impact of NF, design

, simultaneously

Noise and the single-ended conversion that is input to difference output have been realized so simultaneously suppressing.

Peak detector (Peak Detector) is used for surveying the size of input signal, because it is connected to the input that does not have frequency selectivity, can perceive the outer large-signal of band, when interference signal surpasses threshold value, access more entering apparatus M1 and M2(shown in dotted line), reduce their direct current biasing, make it be operated in class AB pattern, rather than common class A pattern, the AB pattern is current-mode, when signal is too large, when voltage domain is subjected to the restriction of supply voltage not have the space, adopt current-mode to make signal be unlikely to saturated.

In addition, outputting inductance shunt-wound capacitance storehouse, adjust by control signal Band for different frequency ranges, make output that the selectivity of frequency be arranged, the filtering band disturbs outward, because the quality factor of sheet internal inductance are not high, usually the Q value is 10, when increase capacitance system was set to low-frequency range, effective Q value was minimum, because

, wherein

Be the frequency of regulating,

Dead resistance for inductance.The Q value is near 3, and to not having too many inhibition with outer interference, we use for all

Value-enhancement technology shown in Fig. 7 e the right, uses negative transconductance to produce

Rp is in parallel with the output cavity effective impedance, because:

；

When

When value is increased to 1/Rp,

Theoretical value be infinitely great, can make this amplifier starting oscillation.

Because different frequency ranges is required-

Value is all different, as shown in Figure 9, our design can digital programming Control- Module, according to different frequency ranges, arrange different-

Value makes the maximization of Q value, and nonoscillatory.Because,

；

So the Rp value of peak low band is minimum, so need to be maximum

Value.

In Fig. 7 g, adopting two measures to deal with the outer large-signal of band disturbs, at first adopt the design of peak detector and CLASS AB current field to make amplifier unlikely saturated, shown in the right side was divided, peak detector arranged class AB pattern by control signal Bias_BLK and BLK after reporting to the police.This moment, electric current was larger owing to being the large-signal pattern, and the impedance matching of input recedes into the background.Secondly come the selective reception signal by the output LC chamber of Q enhancement mode, filtering interference signals makes it can not enter next module, down-conversion mixer:

。

The radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards of above-described embodiment, problem and shortage in view of traditional low noise amplifier, adopt a single-ended input, use single inductance, satisfy noiseproof feature, simultaneously can the outer large-signal of filtering band, cover the wide-band amplifier of TD-LTE, TD-SCDMA and quad-band GSM.

Fig. 8-Figure 12 is the system block diagram of various different modes, the module that dark functional module need to activate when being this pattern, and the module of light color is closed when eating pattern, to save electric current.Frequency synthesizer produces the frequency signal of corresponding modes during various pattern, and all receptions and the relevant module of emission all are set to frequency and the bandwidth of this pattern.

In Fig. 8, the wave band that relates to comprises:

Band?34:?2010~2025MHz?(TD-SCDMA)；

Band?39?S:?1900~1920MHz?(TD-SCDMA)。

In Fig. 9, the wave band that relates to comprises:

Band?40:?2300~2400MHz?(TD-SCDMA)。

In Figure 10, the wave band that relates to comprises:

Band?38:?2570~2620MHz?(TD-LTE)。

In Figure 11, the wave band that relates to comprises:

Band?39?F:?1880~1900MHz?(TD-LTE)。

In Figure 12, the wave band that relates to comprises:

Band?2:?1930~1990MHz?RX,?1850-1910MHz?TX?(PCS)；

Band?3:?1805~1880MHz?RX,?1710-1785MHz?TX?(DCS)；

Band?5:?869~894MHz?RX,?824~849MHz?TX?(EGSM)；

Band?8:?925~960MHz?RX,?880~915MHz?TX?(GSM)。

In the Quad-GSM pattern, requirement for the noise that satisfies strict system, also because this mode signal bandwidth 200KHz is narrower, relatively be suitable for the mode of the direct modulating frequency synthesizer of baseband signal, so this mode transmitter does not need digital to analog converter, for with other mode common Mid Frequency (MB) output modules and sheet in transformer, can adopt programmable mode, by digital control unit digital to analog converter is programmed for output buffer.Shown in Fig. 7 d, the data wire of other pattern usings is disconnected, the device of DAC unit access fixed level, to NMOS, make it to be in conducting state, at this moment such as high level, RF-DAC does not have mixing and analog conversion function, only has the Hyblid Buffer Amplifier function of LOGEN being come signal Lop and Lon.

The radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards of above-described embodiment, problem and shortage in view of traditional low noise amplifier, adopt a single-ended input, use single inductance, satisfy noiseproof feature, simultaneously can the outer large-signal of filtering band, cover the wide-band amplifier of TD-LTE, TD-SCDMA and quad-band GSM.

The radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of the many standards of the utility model of above-described embodiment can reach following beneficial effect at least:

⑴ require the outer device of sheet few, reduces system cost;

⑵ chip pin is few, reduces system complexity, reduces cost;

⑶ personalized, and performance has been optimized in single-minded TD design, single-frequency synthesizer scheme, Cost reduction and reduce complexity;

⑷ receiver front end straightened up in place has improved performance;

⑸ system schema and existing 2G system compatible shorten Time To Market.

The application system of radio-frequency front-end receive-transmit system (being radio-frequency front-end system) embodiment

Based on radio-frequency front-end receive-transmit system embodiment, the present embodiment provides based on one of application system of radio-frequency front-end receive-transmit system, namely based on the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards of radio-frequency front-end receive-transmit system.

As shown in Figure 4, the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards of the present embodiment, comprise BBIC, be connected, be used for realize the multi-band signal transmitting-receiving with the BBIC signal and based on the radio frequency integrated circuit RFIC of radio-frequency front-end receive-transmit system, the multiband power amplifier PA that is connected with the RFIC signal respectively, the high power RF switch that is connected with RFIC and multiband PA signal respectively, and the antenna that is connected with RFIC and high power RF switching signal respectively.

Here, above-mentioned high power RF switch comprises high power hilted broadsword 5 throw switch SP5T at least; Multiband PA comprises that parallel signal is connected to 34 and 49 wave band PA, 38 and 40 wave band PA and the 800-900MHz wave band PA between RFIC and the SP5T.

In Fig. 4, adopt the single-frequency synthesizer, the fore-end of the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards is optimized; For example, can compatible TD-LTE standard, TD-SCDMA standard and Quad-GSM standard etc.

Wherein, receiver uses recoverable, reconfigurable tracking filter in the sheet, like this, wave band 2,3,5,8,34,38,39 and 40, frequency signal share same input from 869MHz to 2620MHz, via the filter of Q enhancement mode in the sheet, according to receiving the frequency range difference signal is selected, compare with prior art shown in Figure 3, reduced 11 SAW (Surface Acoustic Wave) filter, thereby reduced cost; Packing chip has reduced 10 receiver inlets, thereby has reduced the complexity and the feasibility that has improved system of system; Yet such receiver need to be faced the design of high linearity low-noise front end device and the problem that the interior filtering of sheet is processed.

In Fig. 4, device name and the model of use comprise:

34,49 wave band power amplifiers (B34, B39 PA; Skyworks SKY77712);

38,40 wave band power amplifier (B38, B40PA; Skyworks SKY77441);

The high linear power amplifier of 800-900MHz (B5, B8 PA; Skyworks SKY65126-21);

High power hilted broadsword 5 throw switches (High-Power Single Pole Five Throw, SP5T; Skyworks, SKY13415-485LF);

LTE baseband chip (BBIC, TD-LTE/TD-SCDMA/GSM Baseband Modem, Spreadtrum, SC9610);

Band?2:?1930~1990MHz?RX,?1850-1910MHz?TX?(PCS)；

Band?3:?1805~1880MHz?RX,?1710-1785MHz?TX?(DCS)；

Band?5:?869~894MHz?RX,?824~849MHz?TX?(EGSM)；

Band?8:?925~960MHz?RX,?880~915MHz?TX?(GSM)；

Band?34:?2010~2025MHz?(TD-SCDMA)；

Band?38:?2570~2620MHz?(TD-LTE)；

Band?39?F:?1880~1900MHz?(TD-LTE)；

Band?39?S:?1900~1920MHz?(TD-SCDMA)；

Band?40:?2300~2400MHz?(TD-SCDMA)。

In above-mentioned radio-frequency front-end system embodiment, about internal structure and the performance of RFIC, can referring to the related description of Fig. 5-Figure 12 and radio-frequency front-end receive-transmit system embodiment, not repeat them here.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (10)

1. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards is characterized in that, comprising:

The diversified receiver of LTE is used for the radiofrequency signal to default frequency spectrum, comprises at least front-end processing any multiple in tracking filter, mixing, variable-gain intermediate frequency and/or low noise amplification, power detection and the AD conversion operations;

The single-frequency synthesizer is used for carrying out front-end processing gained front-end processing result based on described LTE variation receiver, comprises that at least multimode counts in frequency division, phase demodulation, vibration, low-pass filtering and the modulation operations multiple arbitrarily frequency synthesis processing;

Described transmitter, be used for carrying out frequency synthesis based on described single-frequency synthesizer and process gained frequency synthesis result, at least comprise frequency conversion process any multiple in radio frequency DA conversion, signal attenuation and the frequency conversion operation, and with frequency conversion process gained frequency inverted result, carry out the output of three ends from high frequency output end, medium frequency output end and low frequency output respectively.

2. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 1, it is characterized in that, described LTE variation receiver comprising parallel two signal processing channels that arrange and being equipped with power detector between described two signal processing channels;

Each signal processing channel comprise LNA/ VGA, frequency mixer, the PGA/ LPF of successively signal connection and two ADC that walk abreast and arrange, and signal is connected to the tracking filter that is at least Q enhancement mode and/or Q adjustable type of LNA/ VGA output;

The first output of described two ADC, the diversified quadrature I output RXI_diversity that is used separately as LTE variation receiver and diversified quadrature Q output RXQ_diversity or be used as quadrature I output IRXI and the receiver quadrature Q output RXQ of LTE receiver; The second output of two ADC links to each other, and is used for the signal of reception from frequency synthesizer as sample frequency;

Described power detector is connected in two signal processing channels between the LNA/VGA output; The output of power detector is used for the power output result of detection.

3. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 2 is characterized in that, and is inner at described tracking filter, is provided with Q value correcting unit in the sheet; Described interior Q value correcting unit comprises LNA, filtration module, local oscillator generator, comparator and numeral rectification central controller; Wherein:

The output of described LNA is connected with the input of filtration module and the first input end of comparator respectively; The output of local oscillator generator is connected with the second input of comparator, and the output of comparator is connected with the input that numeral is corrected central controller, and the output that numeral is corrected central controller is connected with the control end of filtration module.

4. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 1, it is characterized in that, described single-frequency synthesizer, comprise with each signal processing channel in two MMD that ADC is connected, the reception local oscillator generator that is connected with frequency mixer in each signal processing channel, the emission local oscillator generator that is connected with described MMD and reception local oscillator generator respectively, the automatic frequency controller that is connected with emission local oscillator generator successively, PFD/CP, and Numerically Controlled Oscillator, and the modulator that is connected with automatic frequency controller and PFD/CP respectively.

5. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 4, it is characterized in that, described transmitter comprises the intermediate frequency transmitter unit that is connected with the 1880-2025MHz radiofrequency signal output of emission local oscillator generator, the high-frequency emission unit that is connected with the 2300-2620MHz radiofrequency signal output of emission local oscillator generator, and the low frequencies unit that is connected with the low frequency radio frequency signal output part of emission local oscillator generator;

The first input end of described high-frequency emission unit and the first input end of intermediate frequency transmitter unit are transmitter orthogonal input TXI; The second input of high-frequency emission unit and the second input of intermediate frequency transmitter unit are transmitter orthogonal input TXQ.

6. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 5, it is characterized in that, described high-frequency emission unit comprises parallel two RFDAC that arrange, and the cross-coupled high band transformer of the output of former limit and described two RFDAC;

Described intermediate frequency transmitter unit comprises parallel two RFDAC that arrange, and the cross-coupled medium wave band transformer of the output of former limit and described two RFDAC;

Described low frequencies unit comprises power amplifier driver PAD, and the low band transformer that is connected with the output of described PAD.

7. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 6, it is characterized in that, each RFDAC, being used for receiving the clock that is provided by BBIC is the data of ClockBB, comprises the DAC and the frequency mixer that are connected with the BBIC signal successively.

8. the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 7 is characterized in that, each RFDAC unit also comprises digital control unit, and described digital control unit is connected with DAC and mixer signal respectively;

In the Quad-GSM pattern, described digital control unit is used for adopting the mode of programming, with the data wire disconnection of TD-LTD pattern and TD-SCDMA pattern, mixing and the DA translation function of RFDAC are suspended, only realized LOGEN is come the Hyblid Buffer Amplifier function of signal Lop and Lon.

9. based on the application of the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 1, it is characterized in that, comprise at least the radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of many standards;

The radio-frequency front-end system of the complete compatible mobile subscriber terminal chip of these many standards, comprise baseband processing chip BBIC, be connected, be used for realize the multi-band signal transmitting-receiving with described BBIC signal and based on the radio frequency integrated circuit RFIC of described radio-frequency front-end receive-transmit system, the multiband power amplifier PA that is connected with described RFIC signal respectively, the high power RF switch that is connected with RFIC and multiband PA signal respectively, and the antenna that is connected with RFIC and high power RF switching signal respectively.

10. the application of the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards according to claim 9 is characterized in that, described high power RF switch comprises high power hilted broadsword 5 throw switch SP5T at least; Described multiband PA comprises that parallel signal is connected to 34 and 49 wave band PA, 38 and 40 wave band PA and the 800-900MHz wave band PA between RFIC and the SP5T.

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