CN202663389U - Multi-standard fully-compatible fourth-generation mobile radio-frequency front-end broadband low-noise amplification device and application system thereof - Google Patents

Abstract

The utility model discloses a multi-standard fully-compatible fourth-generation mobile radio-frequency front-end broadband low-noise amplification device. The device comprises a single-ended input differential output noise cancellation type low-noise amplifier, a tracking filter quality factor enhancement circuit and a class AB module, wherein the single-ended input differential output noise cancellation type low-noise amplifier is used for enabling noises to cancel and signals to complement and add together by using the phase contrary of the signals and noises; the tracking filter quality factor enhancement circuit is used for increasing the quality factor of an output cavity through adjusting negative transconductance so as to obtain the best out-of-band interference filtering effect; and the class AB module is used for enabling a current mode amplifier to be unsaturated so as to respond to stronger out-of-band interference. According to the device disclosed by the utility model, the single-ended input is adopted, a single inductor is utilized, and the noise performance is met; meanwhile, the amplification device can filter out out-of-band large signals and cover the broad bands of TD-LTE (Time Division Long Term Evolution), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) and a quad-band GSM (Global System for Mobile Communication); and the device has the advantages of low cost, more applicable standards, high data rate, high sensitivity, low noise and little space occupation.

Description

Many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier and application system thereof

Technical field

The utility model relates to four third-generation mobile communication fields, particularly, relate to many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier and application system thereof.

Background technology

Develop rapidly along with mobile communication technology, in order to cover 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), (Time Division-Synchronous Code Division Multiple Access is called for short TD-SCDMA to TD SDMA; Be the 3G (Third Generation) Moblie standard that China proposes, be called for short 3G; Also be in three 3G standards of ITU approval, take Intellectual Property Right in China as radio communication international standard main, that accepted extensively in the world and approve) and four GSM(Quad-GSM frequently) all frequency ranges, in conventional power amplifier as shown in Figure 2, receiver (Receiver) front end must use SAW (Surface Acoustic Wave) filter (SAW filter) to reduce interfering with each other between the frequency range.

For example, 34 wave bands [Band 34:2010 ~ 2025MHz (TD-SCDMA)], 38 wave bands [Band 38:2570 ~ 2620MHz (TD-LTE)], 39 wave bands [Band 39 F:1880 ~ 1900MHz (TD-LTE), Band 39 S:1900 ~ 1920MHz (TD-SCDMA)] and 40 wave bands [Band 40:2300 ~ 2400MHz (TD-SCDMA)], 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 supplied with three LTE wave bands, i.e. 38 wave bands, 39 wave bands and 40 wave bands.

The compatible mobile phone of TD-LTE/TD-SCDMA/2G shown in Figure 1, comprise Power Management Unit, the memory that is connected with Power Management Unit respectively, baseband processor, application processor, 2G/3G/4G radio-frequency (RF) receiving and transmission module and power amplifier, the Subscriber Identity Module that is connected with baseband processor (SIM card), the antenna that is connected with power amplifier, the navigation module that is connected with application processor respectively, camera model, bluetooth module and Wireless Internet access module; Application processor and baseband processor are connected with memory respectively.

For compatible 2 generation mobile phones (referring to Fig. 1), need to support 2 wave bands of PCS standard, 3 wave bands of supporting the DCS standard, 5 wave bands of supporting the EGSM standard and 8 wave bands of GSM standard; So receiver needs 11 SAW (Surface Acoustic Wave) filter, one has 11 receives input.

In addition, in traditional low noise amplifier shown in Figure 7, it uses Lg and two inductance of Ls to do the input impedance coupling, and the electric current steering of output stage grid ground (Cascode) device M3-M6 realizes the gain control of current field, output inductance L d is used for finishing the output impedance coupling; For suppress common-mode noise and interference and with the interface of frequency mixer, adopt difference input INP and two input ports of INN.

In above-mentioned traditional low noise amplifier, the difference input increases the input pin several times, and the design of many standards multiband is the limited design of pin; Three inductance of Lg, Ls and Ld make the shared chip area of this module quite large; Adopt Lg and two inductance of Ls to finish Input matching, add outputting inductance, make this system become narrow-band receiver, can not satisfy the requirement of system of the multiband of 869～2620MHz.In addition, this amplifier must be used with the outer SAW (Surface Acoustic Wave) filter of sheet, otherwise the outer large-signal of band will make it saturated, make the sensitivity of accepting of system.

In realizing process of the present utility model, the inventor finds to exist at least in the prior art that cost is high, applied code is few, data transfer rate is low, sensitivity is low, noise is large and the defective such as large that takes up room.

The utility model content

The purpose of this utility model is, for the problems referred to above, propose many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier, with realize that cost is low, applied code is many, data transfer rate is high, highly sensitive, noise is little and the little advantage that takes up room.

Another purpose of the present utility model is, propose based on the above many standard complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, namely comprise at least many standards complete compatible four generation mobile radio front end receive-transmit system.

For achieving the above object, the technical solution adopted in the utility model is: many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier, comprise single-ended input difference output noise counteracting type low noise amplifier, and the tracking filter shear force detection circuit and the AB generic module that are connected with described single-ended input difference output noise counteracting type low noise amplifier respectively; Wherein:

Described single-ended input difference output noise counteracting type low noise amplifier is used for utilizing opposite two of signal and noise phase to make noise cancellation, makes the complementary addition of signal;

Described tracking filter shear force detection circuit is used for reaching by the quality factor of adjusting negative transconductance raising output cavity, obtains the outer interference filter effect of best band;

Described AB generic module is used for making current mode amplifier unsaturated, disturbs outward with the stronger band of reply.

Further, described single-ended input difference output noise counteracting type low noise amplifier comprises variable gain low-noise amplifier LNA/ VGA at least;

Be complementary with described tracking filter shear force detection circuit, also be provided with tracking filter.

Further, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main);

The output OUTp of described noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other, and the noise cancellation formula of described LNA is:

；

Wherein,

With

Be the transconductance value of entering apparatus M1 and M2,

With

For inductance L 1 and L2 in operating frequency

Effective impedance; The noise factor of this low noise amplifier can be expressed as:

；

Wherein,

For device channel thermal noise coefficient, in order to reduce

On the impact of NF, design

, simultaneously

Further, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported; Described class A amplifying unit, via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and OUTn, single spin-echo, the complementary enhancing; And/or,

Inner at described variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, described class AB amplifying unit, class A amplifying unit are connected successively with tracking filter; Described class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit (Varible Gain Amplifier is called for short VGA); Described VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.

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:

When the state of rectification, 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, inner at described tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit;

Described Q enhancing amount regulon, comprise for the word programming Control-

Module; By-

Module, according to different frequency ranges, arrange different-

Value makes Q enhancing amount

The adjusting formula be:

；

Wherein,

Be the transconductance value of entering apparatus Mn, the output cavity effective impedance

,

Be the effective value of Q,

,

Be the frequency of regulating,

Be the dead resistance of inductance, n is natural number.

Simultaneously, another technical scheme that the utility model adopts is: based on the above many standard complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, comprise at least the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards; The radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of these many standards comprises:

Based on described many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier described LTE variation receiver, be used for the radiofrequency signal to default frequency spectrum (as being 869-2620MHz from the single-ended receive frequency of antenna), at least comprise tracking filter, mixing, variable-gain intermediate frequency and/or low noise amplification, power survey with the AD conversion operations in arbitrarily after the multiple front-end processing, and gained front-end processing result is sent to the single-frequency synthesizer;

The single-frequency synthesizer, be used for the front-end processing result based on the transmission of described 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;

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 (Power Detector) between described two signal processing channels;

Each signal processing channel, comprise the variable gain low-noise amplifier (LNA) that signal successively connects/VGA, frequency mixer, programmable gain amplifier (PGA)/low pass filter (LPF) and parallel two analog to digital converters (ADC) that arrange, and signal is connected to the tracking filter that is at least Q enhancement mode and/or Q adjustable type (Tracking Filter) 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 (Local Oscilator), comparator and numeral rectification central controller (Digital Calibration Engine); Wherein:

When the state of rectification, 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; And,

Inner at described tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit;

Described Q enhancing amount regulon, comprise for the word programming Control-

Module; By-

Module, according to different frequency ranges, arrange different-

Value makes Q enhancing amount

The adjusting formula be:

；

Wherein,

Be the transconductance value of entering apparatus Mn, the output cavity effective impedance

,

Be the effective value of Q,

, Be the frequency of regulating,

Be the dead resistance of inductance, n is natural number.

Further, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main);

The output OUTp of described noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other, and the noise cancellation formula of described LNA is:

；

Wherein,

With

Be the transconductance value of entering apparatus M1 and M2,

With

For inductance L 1 and L2 in operating frequency Effective impedance; The noise factor of this low noise amplifier can be expressed as:

；

Wherein,

For device channel thermal noise coefficient, in order to reduce

On the impact of NF, design

, simultaneously

Or,

Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported;

Via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and output OUTn, single spin-echo, the complementary enhancing; And/or,

Inner at described variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, described class AB amplifying unit, class A amplifying unit are connected successively with tracking filter;

Described class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit VGA;

Described VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.

In the complete compatible four generation mobile radio front end receive-transmit systems of above-mentioned many standards, described frequency synthesizer, comprise the multi-modulus frequency divider (MMD) that is connected with two ADC in each signal processing channel, the reception local oscillator generator (RX LO Gen) that is connected with frequency mixer in each signal processing channel, the emission local oscillator generator (TX LO Gen) that is connected with described MMD and reception local oscillator generator respectively, the automatic frequency controller (AFC) that is connected with emission local oscillator generator successively, phase discriminator (PFD)/voltage pump (CP), and Numerically Controlled Oscillator (DCXO), and the modulator (DSM) that is connected with automatic frequency controller and PFD/ CP respectively.

In the complete compatible four generation mobile radio front end receive-transmit systems of above-mentioned many standards, 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.

In the complete compatible four generation mobile radio front end receive-transmit systems of above-mentioned many standards, 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

In the complete compatible four generation mobile radio front end receive-transmit systems of above-mentioned many standards, 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 (Mixer) that are connected with the BBIC signal successively.

In the complete compatible four generation mobile radio front end receive-transmit systems of above-mentioned many standards, each RFDAC unit also comprises digital control unit, and described digital control unit is connected with digital to analog converter (DAC) and mixer signal respectively;

In the Quad-GSM pattern, described digital control unit, be used for adopting the mode of programming, the data wire of TD-LTD pattern and TD-SCDMA pattern is disconnected, mixing and the DA translation function of radio frequency digital to analog converter (RFDAC) are suspended, only realized LOGEN is come the Hyblid Buffer Amplifier function of signal Lop and Lon.

Many standards of each embodiment of the utility model complete compatible four generation mobile radio front-end wideband low-noise amplifier and application system thereof, because this device comprises: single-ended input difference output noise counteracting type low noise amplifier, be used for utilizing opposite two of signal and noise phase to make noise cancellation, make the complementary addition of signal; Tracking filter shear force detection circuit is used for reaching by the quality factor of adjusting negative transconductance raising output cavity, obtains the outer interference filter effect of best band; The AB generic module is used for making current mode amplifier unsaturated, disturbs outward with the stronger band of reply; Can adopt the mode of single-ended input three ends output, use single inductance to satisfy low-noise performance, the outer large-signal of simultaneously filtering band, and the broadband signal of covering TD-LTE, TD-SCDMA and quad-band GSM; Cost is high, applied code is few, data transfer rate is low, sensitivity is low, noise is large with take up room large defective thereby can overcome in the prior art, with realize that cost is low, applied code is many, data transfer rate is high, highly sensitive, noise is little and the little advantage that takes up room.

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 block diagram of the compatible mobile phone of existing TD-LTE/TD-SCDMA/2G;

Fig. 2 is the operation principle schematic diagram of conventional power amplifier;

Fig. 3 be the many standards of the utility model complete compatible four generation the mobile radio front end system the operation principle schematic diagram;

Fig. 4 be TD-LTE/TD-SCDMA radio frequency integrated circuit (RFIC) fore-end in the utility model (be many standards complete compatible four generation mobile radio front end receive-transmit system) the operation principle schematic diagram;

Fig. 5 is the correction block diagram of radio-frequency filter in the utility model;

Fig. 6 a is the filtering waveform of different Q value among Fig. 5;

Fig. 6 b is the operation principle block diagram of the interior Q value correcting unit of sheet in the tracking filter;

Fig. 6 c is the electrical principle schematic diagram of radio frequency digital to analog converter in the utility model (RFDAC);

Fig. 6 d is the electrical principle schematic diagram that is made of buffer in the utility model RFDAC;

Fig. 7 is the electrical principle schematic diagram of traditional low noise amplifier;

Fig. 8 be the many standards of the utility model complete compatible four generation mobile radio front-end wideband low noise amplifier the electrical principle block diagram;

Fig. 9 is for measuring the electrical principle schematic diagram of adjustable low noise amplifier based on the Q enhancing of Fig. 8;

Figure 10 is for tackling the electrical principle schematic diagram of the outer low noise amplifier that disturbs of band based on the Q enhancement mode of Fig. 8;

Figure 11 is for tackling the detailed realization electrical principle schematic diagram of the outer low noise amplifier that disturbs of band based on the Q enhancement mode of Fig. 8.

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 wideband low noise amplifying device embodiment

According to the utility model embodiment, such as Fig. 5-Fig. 6 d and Fig. 8-shown in Figure 10, provide many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier, comprise single-ended input difference output noise counteracting type low noise amplifier, and the tracking filter shear force detection circuit and the AB generic module that are connected with single-ended input difference output noise counteracting type low noise amplifier respectively; Wherein:

Single-ended input difference output noise counteracting type low noise amplifier is used for utilizing opposite two of signal and noise phase to make noise cancellation, makes the complementary addition of signal;

Tracking filter shear force detection circuit is used for reaching by the quality factor of adjusting negative transconductance raising output cavity, obtains the outer interference filter effect of best band;

The AB generic module is used for making current mode amplifier unsaturated, disturbs outward with the stronger band of reply.

Above-mentioned single-ended input difference output noise counteracting type low noise amplifier comprises variable gain low-noise amplifier LNA/ VGA at least; Be complementary with tracking filter shear force detection circuit, also be provided with tracking filter.

Inner at above-mentioned variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main); The output OUTp of noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other, and the noise cancellation formula of LNA is:

；

Wherein,

With

Be the transconductance value of entering apparatus M1 and M2,

With

For inductance L 1 and L2 in operating frequency

Effective impedance; The noise factor of this low noise amplifier can be expressed as:

；

Wherein,

For device channel thermal noise coefficient, in order to reduce

On the impact of NF, design

, simultaneously

Inner at above-mentioned variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported; Described class A amplifying unit, via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and OUTn, single spin-echo, the complementary enhancing; And/or,

Inner at above-mentioned variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, class AB amplifying unit, class A amplifying unit are connected successively with tracking filter; Class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

Inner at above-mentioned variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit VGA; VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.

Inner at above-mentioned tracking filter, be provided with Q value correcting unit in the sheet; Q value correcting unit in the sheet comprises LNA, filtration module, local oscillator generator, comparator and numeral rectification central controller; Wherein:

When the state of rectification, 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.

Inner at above-mentioned tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit; Q enhancing amount regulon, comprise for the word programming Control-

Module; By-

Module, according to different frequency ranges, arrange different-

Value makes Q enhancing amount

The adjusting formula be:

；

Wherein,

Be the transconductance value of entering apparatus Mn, the output cavity effective impedance

,

Be the effective value of Q,

,

Be the frequency of regulating,

Be the dead resistance of inductance, n is natural number.

Radio-frequency front-end receive-transmit system embodiment

According to the utility model embodiment, such as Fig. 3-Fig. 6 d and Fig. 8-shown in Figure 10, provide based on above-mentioned many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, comprise at least many standards complete compatible four generation mobile radio front end receive-transmit system.

As shown in Figure 3, with many standards of present embodiment complete compatible four generation mobile radio front end receive-transmit system be applied to many standards complete compatible four generations during the mobile radio front end system, these many standards complete compatible four generation the mobile radio front end system, comprise BBIC, the radio frequency integrated circuit RFIC that is connected and is used for realizing the transmitting-receiving of single input and three output multi-band signal with the BBIC signal, 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 high linear PA of 800-900MHz between RFIC and the SP5T.

In Fig. 3, the proportion synthesizer, to many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier fore-end be 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 2, 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. 3, 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)。

As shown in Figure 4 and Figure 5, above-mentioned many standards complete compatible four generation mobile radio front end receive-transmit system comprise: the LTE variation receiver, single-frequency synthesizer and the transmitter that connect of signal successively, this LTE variation receiver based on above-mentioned many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier and arranging.

Wherein, based on above-mentioned many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier 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 after comprising 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, gained front-end processing result is sent to the single-frequency synthesizer; 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 gain control unit (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).Frequency synthesizer, for generation of transmitter mixing and the required local oscillated signal of receiver mixing, at least after comprising that multimode is counted frequency synthesis processing any multiple in frequency division, phase demodulation, vibration, low-pass filtering and the modulation operations, gained frequency synthesis result is sent to transmitter and receiver;

Digital control crystal oscillator (Digital ControledControlled Crystal Oscilator, 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, abbreviation CP) is 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 single-frequency synthesizer, be used for the front-end processing result based on the transmission of 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.

Above-mentioned transmitter, be used for the frequency synthesis result based on the transmission of single-frequency synthesizer, 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.

This transmitter is divided into high band (TX_HB) and low band (TX_LB) according to output frequency, high band covering frequence wave band is from 1880MHz to 2025MHz, low band covering frequence wave band is from 2300MHz to 2620MHz, corresponding for obtaining best peak value, corresponding high band transformer and low band transformer are arranged respectively.The quadrature I output of high band and Q output are cancelled image signal in the place's addition of high band transformer, owing to be differential design, local-oscillator leakage is herein cancellation also.The quadrature I output of low band and Q output are cancelled image signal in the place's addition of low band transformer, owing to be differential design, local-oscillator leakage is herein cancellation also.The local oscillator quadrature I of low band and Q frequency input signal be 1880MHz to 2025MHz, to be 23000MHz accept respectively the positive input signal TXI and the TXQ that are come by baseband processor to 2620MHz. high band and low band part for the local oscillator quadrature I of high band and Q frequency input signal.RFDAC is radio frequency digital to analog converter, and the back has a detailed description.

Particularly, 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 is not the filter of front end, the front end transconductance stage (Gm) of low-noise receiver 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 that it is undistorted to provide more electric current to guarantee by the AB class, and guarantees 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.

Shown in Fig. 6 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 Oscillator), comparator and numeral rectification central controller (Digital Calibration Engine); Wherein: when the state of rectification, 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. 6 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;

⑶ detect the starting of oscillation of oscillator by the medium frequency output end DC direct current biasing of frequency mixer;

⑷ reduce the negative transconductance value, until the front end vibration disappears, record negative transconductance value arranges;

⑸ fixing negative transconductance value of increase arranges surplus and guarantees that the front end amplification filtering is stable.This moment, the Q value was best.

As shown in Figure 4 and 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 reduce chip area simultaneously.

As shown in Figure 4 and 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 824-915MHz radiofrequency signal output 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 5, since transmitter output spectrum degree of purity, the requirement of efficient and the linearity, and sheet is 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.

Fig. 5 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. 6 a.

Shown in Fig. 6 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. 6 c can show the transmitter circuitry of the RF-DAC formula that above-described embodiment adopts, and uses

Frequency is used as the sample frequency of DAC, like this DAC sample frequency 2 frequencys multiplication Be output signal, 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 adopt 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. 6 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.Shown in Fig. 6 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.

Fig. 8 is the utility model low noise amplifier theory diagram.This low noise amplifier receives single-ended input signal IN, wideband impedance match is amplified to class A pattern main amplifier (Main), with gain control Gain Control (GC), through tracking filter Tracking Filter, difference is exported OUTp and OUTn before output.When large-signal was disturbed outside peak detector Peak Detector perceives band, (Aux) amplifier was assisted in the startup of class AB pattern.The linearity that keeps output signal.

In Fig. 9, tracking filter comprises Q value correcting unit in the sheet.In Figure 10, inner at tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit; Q enhancing amount regulon, comprise for the word programming Control-

Module; By-

Module, according to different frequency ranges, arrange different-

Value makes Q enhancing amount

The adjusting formula be:

；

Wherein,

Be the transconductance value of entering apparatus Mn, the output cavity effective impedance , Be the effective value of Q,

, Be the frequency of regulating,

Be the dead resistance of inductance, n is natural number.

In Figure 10, inner at tracking filter, also be provided with respectively with sheet in Q value correcting unit the AB mode clock unit and the unit, Q enhancement mode broadband that are connected, AB mode clock unit, the interior Q value correcting unit of sheet and unit, Q enhancement mode broadband are connected successively; AB mode clock unit comprises be used to making the unlikely saturated peak detector of amplifier and AB mode current territory design module; Unit, Q enhancement mode broadband comprises the output LC chamber for the Q enhancement mode of selective reception signal and filtering interference signals.

In Fig. 9 and Figure 10, 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

,

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.

Inner at variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main); The output OUTp of noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other; In order to make noise cancellation, the noise cancellation formula of LNA must satisfy:

；

With

Be the transconductance value of entering apparatus M1 and M2,

With

For inductance L 1 and L2 in operating frequency

Effective impedance.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.

Perhaps, inner at variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported; Via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and output OUTn, single spin-echo, the complementary enhancing; And/or,

Inner at variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, class AB amplifying unit, class A amplifying unit are connected successively with tracking filter; Class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

Inner at variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit VGA; VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.

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, it is shown in dotted line to access more entering apparatus M1 and M2(), 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. 8 the right, uses negative transconductance to produce

With the output cavity effective impedance

Parallel connection, because:

；

When

Value is increased to

The time,

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 10, by design can digital programming Control-

Module, according to different frequency ranges, arrange different-

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

；

So peak low band

Value is minimum, so need to be maximum

Value.

In Figure 11, 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 be 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:

。

Many standards of above-described embodiment complete compatible four generation mobile radio front-end wideband low-noise amplifier, 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 many standards of the utility model of above-described embodiment complete compatible four generation mobile radio front-end wideband low-noise amplifier, can reach following beneficial effect at least:

⑴ number of pins is saved in single-ended input;

⑵ Broadband Matching is fit to many standards, the multiband system;

⑶ low noise, using noise cancellation technology;

⑷ High frequency filter in the sheet does not need the outer SAW (Surface Acoustic Wave) filter of sheet, saves overhead;

⑸ single internal inductance design, saving chip area.

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. Many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, comprise single-ended input difference output noise counteracting type low noise amplifier, and the tracking filter shear force detection circuit and the AB generic module that are connected with described single-ended input difference output noise counteracting type low noise amplifier respectively; Wherein:

   Described single-ended input difference output noise counteracting type low noise amplifier is used for utilizing opposite two of signal and noise phase to make noise cancellation, makes the complementary addition of signal;

   Described tracking filter shear force detection circuit is used for reaching by the quality factor of adjusting negative transconductance raising output cavity, obtains the outer interference filter effect of best band;

   Described AB generic module is used for making current mode amplifier unsaturated, disturbs outward with the stronger band of reply.
2. Many standards according to claim 1 complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, described single-ended input difference output noise counteracting type low noise amplifier comprises variable gain low-noise amplifier LNA/ VGA at least;

   Be complementary with described tracking filter shear force detection circuit, also be provided with tracking filter.
3. Many standards according to claim 2 complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main);

   The output OUTp of described noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other, and the noise cancellation formula of described LNA is:

   

   ；

   Wherein,

   

   With

   

   Be the transconductance value of entering apparatus M1 and M2,

   

   With

   

   For inductance L 1 and L2 in operating frequency

   

   Effective impedance; The noise factor of this low noise amplifier can be expressed as:

   

   ；

   Wherein,

   

   For device channel thermal noise coefficient, in order to reduce

   

   On the impact of NF, design

   

   

   , simultaneously

   

   
4. Many standards according to claim 2 complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported; Described class A amplifying unit, via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and OUTn, single spin-echo, the complementary enhancing; And/or,

   Inner at described variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, described class AB amplifying unit, class A amplifying unit are connected successively with tracking filter; Described class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

   Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit VGA; Described VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.
5. Many standards according to claim 2 complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, 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:

   When the state of rectification, 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.
6. Many standards according to claim 5 complete compatible four generation mobile radio front-end wideband low-noise amplifier, it is characterized in that, inner at described tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit;

   Described Q enhancing amount regulon, comprise for the word programming Control-

   

   Module; By-

   

   Module, according to different frequency ranges, arrange different- Value makes Q enhancing amount

   

   The adjusting formula be:

   

   ；

   Wherein,

   

   Be the transconductance value of entering apparatus Mn, the output cavity effective impedance ,

   

   Be the effective value of Q, ,

   

   Be the frequency of regulating,

   

   Be the dead resistance of inductance, n is natural number.
7. Based on many standards claimed in claim 1 complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, it is characterized in that, comprise at least the radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of many standards;

   The radio-frequency front-end receive-transmit system of the complete compatible mobile subscriber terminal chip of these many standards comprises:

   Based on described many standards complete compatible four generation mobile radio front-end wideband low-noise amplifier LTE variation receiver, be used for the radiofrequency signal to default frequency spectrum, comprise 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;

   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.
8. Many standards according to claim 7 complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, 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, the variable gain low-noise amplifier LNA/ VGA, frequency mixer, PGA/ LPF and parallel two ADC that arrange that comprise successively signal connection, 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.
9. Many standards according to claim 8 complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, it is characterized in that, 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:

   When the state of rectification, 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; And,

   Inner at described tracking filter, also be provided with sheet in the Q enhancing amount regulon that is connected of Q value correcting unit;

   Described Q enhancing amount regulon, comprise for the word programming Control-

   

   Module; By-

   

   Module, according to different frequency ranges, arrange different-

   

   Value makes Q enhancing amount

   

   The adjusting formula be:

   

   ；

   Wherein, Be the transconductance value of entering apparatus Mn, the output cavity effective impedance

   

   ,

   

   Be the effective value of Q,

   

   ,

   

   Be the frequency of regulating,

   

   Be the dead resistance of inductance, n is natural number.
10. Many standards according to claim 8 complete compatible four generation mobile radio front-end wideband low-noise amplifier application system, it is characterized in that, inner at described variable gain low-noise amplifier LNA/ VGA, be provided with noise cancellation type class A amplifying unit (Main);

    The output OUTp of described noise cancellation type class A amplifying unit is identical with the noise phase of output OUTn, cancels each other, and the noise cancellation formula of described LNA is:

    

    ；

    Wherein,

    

    With

    

    Be the transconductance value of entering apparatus M1 and M2, With For inductance L 1 and L2 in operating frequency

    

    Effective impedance; The noise factor of this low noise amplifier can be expressed as:

    ；

    Wherein,

    

    For device channel thermal noise coefficient, in order to reduce

    

    On the impact of NF, design

    

    

    , simultaneously

    

    

    Or,

    Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with the class A amplifying unit (Main) that single-ended input difference is exported;

    Via the signal of the main channel of M1 and via the auxiliary signal of M2 at output OUTp and output OUTn, single spin-echo, the complementary enhancing; And/or,

    Inner at described variable gain low-noise amplifier LNA/ VGA, also be provided with the class AB pattern amplifying unit that is connected with class A amplifying unit respectively, described class AB amplifying unit, class A amplifying unit are connected successively with tracking filter;

    Described class AB amplifying unit is used with peak detector, and reply band is outer to be disturbed, and when peak detector perceives the outer large-signal of band, opens the AB amplifier of current-mode, makes that amplifier is unlikely satisfies; And/or,

    Inner at described variable gain low-noise amplifier LNA/ VGA, be provided with gain control unit VGA;

    Described VGA by receiving next signal GC and GCB by baseband processor BBIC, controls conducting and the disconnection of cascade device M3, M4, M5 and the M6 of low noise amplifier, finishing gain control.

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