CN108152798B - Current multiplexing phased-array receiver - Google Patents
Current multiplexing phased-array receiver Download PDFInfo
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- CN108152798B CN108152798B CN201711133909.4A CN201711133909A CN108152798B CN 108152798 B CN108152798 B CN 108152798B CN 201711133909 A CN201711133909 A CN 201711133909A CN 108152798 B CN108152798 B CN 108152798B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S2013/0236—Special technical features
- G01S2013/0245—Radar with phased array antenna
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Abstract
Current multiplexing phased-array receiver disclosed by the invention realizes that locating frequency range difference is divided into RF phase shifter and intermediate frequency dephased current is multiplexed phased-array receiver according to phase shift function.In RF phase shifter current multiplexing phased-array receiver, the DC current that power supply provides flows through electric current by power positive end and turns voltage module, mixer module, variable-gain amplifier module, quadrature generation circuit module, low noise amplifier module finally to ground, is multiplexed in modules；In intermediate frequency dephased current multiplexing phased-array receiver, DC current turns to be multiplexed in voltage module, variable-gain amplifier module, mixer module and low noise amplifier module in electric current.The present invention reduces mutual conductance, the use across resistance unit, simplifies circuit structure, reduce the complexity of receiver by carrying out current multiplexing in multichannel phased-array receiver；In addition, modules do not have independent quiescent current, therefore low in energy consumption, with the increase of number of channels, advantage is further obvious.
Description
Technical field
The present invention relates to current multiplexing phased-array receiver, belongs to microelectronics and Solid State Electronics technology and simulation is integrated
Field of circuit technology.
Background technique
At first phased array is mainly used for space flight and field of radar, with the development of inexpensive microwave technology, phased array
Purposes becomes diversification, and the use of phased array becomes more prevalent.Various Beamforming technologies are developed and come into operation.
Analog beam molding is mainly realized by phased array transmitter, phased-array receiver and signal processing module.Phased array receives
Machine is amplified, frequency conversion, filtering, is usually made of following components: low noise for handling electromagnetic signal received by antenna
Acoustic amplifier, phase shifter, frequency mixer, Analog Baseband.
Phased-array receiver mainly realizes phase shift by way of Vector modulation, realizes locating frequency range according to phase shift function
Difference, RF phase shifter and intermediate frequency phase shift can be divided into.For phased-array receiver (the Kwang-Jin Koh, et of RF phase shifter
al.“An X-and Ku-Band 8-Element Phased-Array Receiver in0.18-um SiGe BiCMOS
Technology ", IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL.43, NO.6, JUNE 2008. is with reference to text
It offers 1), antenna received signal is amplified by low-noise amplifier, then generates the orthogonal output of two-way by quadrature generation circuit
Signal, then lease making are crossed variable gain amplifier and are weighted, and are transformed into intermediate frequency by frequency mixer again after two paths of signals synthesis, finally
Filtering is amplified by Analog Baseband；For phased-array receiver (Maryam Tabesh, et al. " the A 65nm of intermediate frequency phase shift
CMOS 4-Element Sub-34mW/Element 60GHz Phased-Array Transceiver”,IEEE JOURNAL
2011. bibliography 2 of OF SOLID-STATE CIRCUITS, VOL.46, NO.12, DECEMBER), antenna received signal
Amplified by low-noise amplifier, be sent directly into frequency mixer, provides two-way orthogonal output signal by complex mixer, two paths of signals point
The two-way orthogonal signalling after phase shift are synthesized after not being weighted, and filtering is finally amplified by Analog Baseband.However, either right
In RF phase shifter phased-array receiver or intermediate frequency phase shift phased-array receiver, current design, signal received by antenna
It in the treatment process of receiver modules, is mainly handled in the form of a voltage, since plurality of voltages signal can not
It directly synthesizes, needs to increase primary circuit and convert voltage to electric current to realize the synthesis of multiple signals, to increase reception
The complexity of machine；In addition, the modules of receiver have independent quiescent current, power consumption is big, with receiver channel number
Increase, power problems will be protruded more.
By taking the phased-array receiver chip of bibliography 1 as an example, RF phase shifter phased-array receiver includes 8 channels, is made
The synthesizer on 1 tunnel and the synthesizer on 2 tunnels 1 tunnel of synthesis are synthesized with two 4 tunnels, and 8 road voltage signals are converted into electric current
1 tunnel is synthesized after signal.By taking the phased array transceiver chip of bibliography 2 as an example, intermediate frequency phase shift receiver includes 4 channels,
Low-noise amplifier, frequency mixer, phase shifter in each channel have independent quiescent current, and power consumption is larger.With receiver
The increase of port number, power consumption will become the critical bottleneck for restricting receiver channel quantity.
By being multiplexed to electric current, the complexity of receiver can be reduced and reduce power consumption (Fujian Lin, et al.
“An RF-to-BB Current-Reuse Wideband Receiver with Parallel N-Path Active/
Passive Mixers and a Single-MOS Pole-Zero LPF”,IEEE International Solid-State
Circuits Conference, 2014:74-75 bibliography 3.S.C.Blaakmeer, E.A.M.Klumperink,
D.M.W.Leenaerts,and B.Nauta,“The Blixer,a Wideband Balun-LNA-I/Q-Mixer
Topology ", IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL.43, NO.12, DECEMBER, 2008. ginseng
Examine document 4), but estimated current multiplexing is only realized in the single-channel receiver for not including phase shift function or phase shifter.How
Current multiplexing is carried out in multichannel phased-array receiver, realizes that low complex degree, low-power consumption phased-array receiver are of the invention
Main Topics.
Summary of the invention
Goal of the invention: in view of the missing of the above-mentioned prior art, present invention aims at proposition current multiplexing phased arrays to connect
Receipts machine carries out current multiplexing in multichannel phased-array receiver, system complexity and system power dissipation is effectively reduced.
Technical solution: to realize upper goal of the invention, the present invention adopts the following technical scheme:
A kind of current multiplexing phased-array receiver realizes phase shift function in radio frequency band, is RF phase shifter current multiplexing phase
Battle array receiver is controlled, includes n receiving channel, n is the integer greater than 1, and each receiving channel includes a low-noise amplifier
Module, a quadrature generation circuit module and a variable-gain amplifier module, n receiving channel share a frequency mixer mould
Block and an electric current turn voltage module；The low noise amplifier module of each receiving channel inputs radio frequency voltage signal all the way, defeated
Two-pass DINSAR current radio frequency signal to quadrature generation circuit module, the quadrature generation circuit module exports four road difference quadratures out
Current radio frequency signal to variable-gain amplifier module is weighted synthesis, and the variable-gain amplifier module output two-way moves
The differential radio frequency current signal of phase；After the differential radio frequency current signal superposition of the phase shift of n variable-gain amplifier module output
It is input to mixer module, mixer module output four road difference quadrature current intermediate frequency signals to the electric current turns voltage module,
The electric current turns voltage module and exports four road difference quadrature voltage intermediate frequency signals；The electric current turns voltage module and power positive end
VDD is connected, and the DC current that power supply provides, which by power positive end flows through electric current and turns voltage module, mixer module, variable gain, to be put
Big device module, quadrature generation circuit module, low noise amplifier module, finally arrive ground GND, are answered in modules
With.
In preferred embodiments, the DC current that power supply provides first flows through electric current by VDD and turns voltage module, then from
The drain electrode of mixer module flows into, and flows out from the source electrode of mixer module, is separated into the road n DC current, per DC current all the way
It is first flowed into from the drain electrode of variable-gain amplifier module, flows out, pass through orthogonal from the source electrode of variable-gain amplifier module
Generation circuit module finally flows into from the drain electrode of low noise amplifier module, flows through low noise amplifier module to GND.
In preferred embodiments, the low noise amplifier module includes a total bank tube and a common source pipe, altogether
The source electrode of bank tube inputs the radio frequency voltage signal and connects bias inductors to GND simultaneously, drains as differential radio frequency electric current letter
Number signal output end all the way；The grid of common source pipe inputs the radio frequency voltage signal, and source electrode meets GND, drains as the difference
The another way signal output end of current radio frequency signal.
In preferred embodiments, the variable-gain amplifier module includes 12 × k NMOS tube, and k is greater than 1
Integer；Wherein 3 × k NMOS tube is that 3 × k NMOS tube source electrode in one group, every group is connected, and inputs four road difference quadrature
Signal all the way in current radio frequency signal；The drain electrode of k NMOS tube of the first via is connected to VDD through resistance respectively in every group, the
The drain electrode of the k NMOS tube on two tunnels is connected, the signal output end all the way of the differential radio frequency current signal as the phase shift；Third
The drain electrode of the k NMOS tube on road is connected, the another way signal output end of the differential radio frequency current signal as the phase shift；12×
The grid of k NMOS tube connects VDD or GND through control switch.
In preferred embodiments, the mixer module includes eight NMOS tubes, the source electrode conduct of the NMOS tube
Current radio frequency signal input terminal, drain electrode are used as current intermediate frequency signal output end, grid input difference orthogonal local oscillation signal.
In preferred embodiments, it includes four resistance that the electric current, which turns voltage module,；Each resistance one end and VDD phase
Even, the other end is connected with the output all the way of the mixer module respectively.
The present invention also provides a kind of current multiplexing phased-array receivers, realize phase shift function in intermediate-frequency band, are middle frequency displacement
Phase current is multiplexed phased-array receiver, includes n receiving channel, and n is the integer greater than 1, each receiving channel includes one
A low noise amplifier module, a mixer module and a variable-gain amplifier module, n receiving channel share one
Electric current turns voltage module；Radio frequency voltage signal, output two-way are poor all the way for the low noise amplifier module input of each receiving channel
Divide current radio frequency signal to mixer module, the mixer module exports four road difference quadrature current intermediate frequency signals to variable increasing
Beneficial amplifier module is weighted synthesis, and the variable-gain amplifier module exports the difference quadrature electric current of intermediate frequency of four tunnel phase shifts
Signal；Electric current is input to after the difference quadrature current intermediate frequency signal superposition of the phase shift of n variable-gain amplifier module output to turn
Voltage module, the electric current turn voltage module and export four road difference quadrature voltage intermediate frequency signals；The electric current turn voltage module with
Power positive end VDD is connected, and the DC current that power supply provides flows through electric current by power positive end and turns voltage module, variable gain amplifier
Module, mixer module, low noise amplifier module finally arrive ground GND, are multiplexed in modules.
In preferred embodiments, the DC current that power supply provides first flows through electric current by VDD and turns voltage module, is separated into
The road n DC current is first flowed into per DC current all the way from the drain electrode of variable-gain amplifier module, from variable gain amplifier
The source electrode of module flows out, and then flows into from the drain electrode of mixer module, flows out from the source electrode of mixer module, finally from low noise
The drain electrode of amplifier module flows into, and flows through low noise amplifier module to GND.
In preferred embodiments, the low noise amplifier module includes a total bank tube and a common source pipe, altogether
The source electrode of bank tube inputs the radio frequency voltage signal and connects bias inductors to GND simultaneously, drains as differential radio frequency electric current letter
Number signal output end all the way；The grid of common source pipe inputs the radio frequency voltage signal, and source electrode meets GND, drains as the difference
The another way signal output end of current radio frequency signal.
In preferred embodiments, the mixer module includes eight NMOS tubes, the source electrode conduct of the NMOS tube
Current radio frequency signal input terminal, drain electrode are used as current intermediate frequency signal output end, grid input difference orthogonal local oscillation signal.
In preferred embodiments, the variable-gain amplifier module include 8 × (k+2) a NMOS tubes, k be greater than
1 integer；Wherein 2 × (k+2) a NMOS tubes are that the source electrode of 2 × k NMOS tube in one group, every group is connected, input described four
Signal all the way in the difference quadrature current intermediate frequency signal of road；The drain electrode of k NMOS tube of the first via is connected in every group, and connects the
The drain electrode of the source electrode of 2 NMOS tubes in upper layer all the way, the k NMOS tube on the second tunnel is connected, and connects 2, the upper layer on the second tunnel
The source electrode of NMOS tube；Difference quadrature medium frequency electric of the drain electrode of 4 NMOS tubes in upper layer in every group respectively as four tunnel phase shift
Flow the output of signal all the way in signal；The grid of 8 × (k+2) a NMOS tubes connects VDD or GND through control switch.
In preferred embodiments, it includes four resistance, each resistance one end and VDD phase that the electric current, which turns voltage module,
Even, the other end is connected with the output all the way of the variable-gain amplifier module in each channel respectively.
The utility model has the advantages that the invention adopts the above technical scheme compared with prior art, by multichannel phased array receive
Current multiplexing is carried out in machine, is had following technical effect that (1) reduces mutual conductance, the use across resistance unit, is simplified low noise amplification
The circuit structure of the modules such as device module, variable gain amplifier reduces the complexity of receiver.(2) modules are not only
Vertical quiescent current, thus it is low in energy consumption, and with the increase of number of channels, this advantage is further obvious.
Detailed description of the invention
Fig. 1 is the frame diagram of the embodiment of the present invention 1.
Fig. 2 is the application exemplary circuit figure in the embodiment of the present invention 1.
Fig. 3 is the frame diagram of the embodiment of the present invention 2.
Fig. 4 is the application exemplary circuit figure in the embodiment of the present invention 2.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application appended claims item and requires limited range.
Embodiment 1
As shown in Figure 1, a kind of current multiplexing phased-array receiver disclosed by the embodiments of the present invention, realizes in radio frequency band and moves
Phase function is a kind of RF phase shifter current multiplexing phased-array receiver, which includes n receiving channel, respectively
Input the road n radiofrequency signal RF1 ..., RFn, final output intermediate-freuqncy signal BB.Each receiving channel contains a low noise
Amplifier module, a quadrature generation circuit module, a variable-gain amplifier module, n receiving channel share one and mix
Frequency device module and an electric current turn voltage module；The low noise amplifier module of each receiving channel, quadrature generation circuit module
It is identical on hardware with variable-gain amplifier module.The DC current that power supply provides flows through electric current by power positive end VDD
Turn voltage module, mixer module, variable-gain amplifier module, quadrature generation circuit module, low noise amplifier module, most
Ground GND is arrived afterwards, and electric current is multiplexed.The radio frequency voltage signal of each receiving channel input initially enters low-noise amplifier
Module exports current radio frequency signal, this current radio frequency signal is then sent into quadrature generation circuit module, generates orthogonal radio frequency
Current signal, orthogonal current signal synthesize after variable-gain amplifier module weights, and export the radio-frequency current letter of phase shift
Number, the variable-gain amplifier module output in n channel links together, the radio-frequency current of the phase shift of these receiving channels output
It is sent into after Signal averaging in a shared mixer module and completes the conversion of current radio frequency signal to current intermediate frequency signal, finally
This current intermediate frequency signal one shared electric current of feeding is turned into voltage module again, is converted to voltage intermediate frequency signal output.This implementation
In example, the DC current that power supply provides first flows through electric current by power positive end and turns voltage module, then from the drain electrode of mixer module
It flows into, is flowed out from the source electrode of mixer module, be separated into the road n DC current, first put from variable gain per DC current all the way
The drain electrode of big device module flows into, and flows out from the source electrode of variable-gain amplifier module, passes through quadrature generation circuit module, finally
It is flowed into from the drain electrode of low noise amplifier module, flows through low noise amplifier module to ground, the DC current is in entire phased array
It is multiplexed in modules in receiver.
Wherein, low noise amplifier module includes a total bank tube and a common source pipe, the source electrode input radio frequency of total bank tube
Voltage signal connects bias inductors to GND simultaneously, drains as the signal output end all the way of differential radio frequency current signal；Common source pipe
Grid input radio frequency voltage signal, source electrode meet GND, drain as the another way signal output end of differential radio frequency current signal.It is variable
Gain amplifier module includes 12 × k NMOS tube, and k is the integer greater than 1；Wherein 3 × k NMOS tube is in one group, every group
3 × k NMOS tube source electrode be connected, input four road difference quadrature current radio frequency signals in signal all the way；The first via in every group
The drain electrode of k NMOS tube be connected to VDD through resistance respectively, the drain electrode of the k NMOS tube on the second tunnel is connected, the difference as phase shift
Divide the signal output end all the way of current radio frequency signal；The drain electrode of the k NMOS tube on third road is connected, the differential radio frequency as phase shift
The another way signal output end of current signal；The grid of 12 × k NMOS tube connects VDD or GND through control switch.Frequency mixer
Module includes eight NMOS tubes, and for the source electrode of NMOS tube as current radio frequency signal input terminal, drain electrode is defeated as current intermediate frequency signal
Outlet, grid input difference orthogonal local oscillation signal.It includes four resistance that electric current, which turns voltage module,；Each resistance one end and VDD phase
Even, the other end is connected with the output all the way of mixer module respectively.
Fig. 2 is an exemplary circuit of concrete application in the RF phase shifter current multiplexing phased-array receiver of the present embodiment
Figure inputs the road n radiofrequency signal as shown in Fig. 2, RF phase shifter current multiplexing phased-array receiver includes n receiving channel respectively
RF1 ..., RFn, final output four road difference quadrature intermediate-freuqncy signal BBIP, BBIN, BBQP, BBQN.Each receiving channel is wrapped
Containing a low noise amplifier module, a quadrature generation circuit module, a variable-gain amplifier module, n receive it is logical
Road shares a mixer module and an electric current turns voltage module；It is the low noise amplifier module of each receiving channel, orthogonal
Generation circuit module is identical on hardware with variable-gain amplifier module.The DC current that power supply provides is by power positive end
VDD, which flows through electric current and turns voltage module, mixer module, variable-gain amplifier module, quadrature generation circuit module, low noise, to be put
Big device module finally arrives ground GND, is multiplexed to electric current.
The input of the low noise amplifier module LNAm of m-th of receiving channel is radio frequency voltage signal RFm, is exported to pass through
The differential radio frequency current signal of amplification.It is total to bank tube M1 and common source pipe M2 by two NMOS tubes, a biasing resistor R1, one every
Straight capacitor C1 and a bias inductors L1 are constituted.M1 source electrode input radio frequency input signal RFm, while connecting L1 to GND；Grid
Connect bank tube bias voltage VBIAS_CG altogether；Drain electrode is the signal output end all the way of LNAm.M2 grid inputs RFm and passes through C1 blocking
Radiofrequency signal afterwards, while common source pipe bias level VBIAS_CS is connect by R1；Source electrode meets GND；Drain electrode is the another way of LNAm
Signal output end.
The input of the quadrature generation circuit module QGCm of m-th of receiving channel is the two-pass DINSAR electric current letter of LNAm output
Number, it exports as four road difference quadrature current radio frequency signal RFIPm, RFQPm, RFINm, RFQNm.QGCm can using transmission line,
The modes such as orthogonal all-pass filter or multiphase filter are realized.
The input signal of the variable-gain amplifier module VGAm of m-th of receiving channel be QGCm output four tunnel difference just
Current radio frequency signal is handed over, output signal is the differential radio frequency being weighted after synthesis to the difference quadrature current radio frequency signal of input
Current signal.VGAm is made of 12 × k NMOS tube and 4 × k resistance.K NMOS tube MA1~k, k NMOS tube MB1~k,
And k NMOS tube MCThe source electrode of 1~k is connected, input signal RFIPm.K NMOS tube MD~k, k NMOS tube ME1~k, with
And k NMOS tube MFThe source electrode of 1~k is connected, input signal RFINm.K NMOS tube MG1~k, k NMOS tube MH1~k, and
K NMOS tube MIThe source electrode of 1~k is connected, input signal RFQPm.K NMOS tube MJ1~k, k NMOS tube MK1~k and k
A NMOS tube MLThe source electrode of 1~k is connected, input signal RFQNm.K NMOS tube MAThe drain electrode of 1~k respectively with k resistance RA1~
One end of k is connected, k resistance RAThe other end of 1~k is connected with VDD.K NMOS tube MFThe drain electrode of 1~k is electric with k respectively
Hinder RFOne end of 1~k is connected, k resistance RFThe other end of 1~k is connected with VDD.K NMOS tube MGThe drain electrode of 1~k is distinguished
With k resistance RGOne end of 1~k is connected, k resistance RGThe other end of 1~k is connected with VDD.K NMOS tube MLThe leakage of 1~k
Pole respectively with k resistance RLOne end of 1~k is connected, k resistance RLThe other end of 1~k is connected with VDD.K NMOS tube MB1
~k, k NMOS tube MD1~k, k NMOS tube MH1~k and k NMOS tube MJThe drain electrode of 1~k is connected, and one as VGAm
Road signal output end.K NMOS tube MC1~k, k NMOS tube ME1~k, k NMOS tube MI1~k and k NMOS tube MK1~
The drain electrode of k is connected, the another way signal output end as VGAm.The grid of 12 × k NMOS tube as needed can be by controlling
Signal control connection VDD or GND.
The input signal of mixer module MIXER is the differential radio frequency current signal of VGAm output, and output signal is four tunnels
Difference quadrature current intermediate frequency signal.It inputs four road difference quadrature local oscillation signals by eight NMOS tube M3 ..., M10 compositions, grid
LOIP, LOIN, LOQP, LOQN.Wherein the grid of M3 and M5 inputs LOIP；The grid of M4 and M6 inputs LOIN；The grid of M7, M9
Input is LOQP；The input of M8 and M10 grid is LOQN.The source electrode of M3, M4, M7, M8 are connected, and the difference for inputting VGAm output is penetrated
Frequency current signal is all the way；The source electrode of M5, M6, M8, M10 are connected, and input the another of the differential radio frequency current signal that VGAm is exported
All the way.M3 is connected with the drain electrode of M5, and M4 is connected with the drain electrode of M6, and M7 is connected with the drain electrode of M9, and M8 is connected with the drain electrode of M10, makees
For the four road difference quadrature current intermediate frequency signal output ends of MIXER.
Electric current turns voltage module I2V, by four resistance R2, R3, R4, R5 composition.In four road difference quadratures of MIXER output
Frequency current signal flows separately through R2, R3, R4, R5, converges to VDD, generates four road difference quadrature voltage intermediate frequency signal BBIP,
BBIN, BBQP, BBQN.Four road difference quadrature voltage intermediate frequency signal BBIP, BBIN, BBQP, BBQN are multiple for RF phase shifter electric current
With the output of phased-array receiver.
Embodiment 2
As shown in figure 3, a kind of current multiplexing phased-array receiver disclosed by the embodiments of the present invention, realizes in intermediate-frequency band and moves
Phase function is a kind of intermediate frequency dephased current multiplexing phased-array receiver, which includes n receiving channel, respectively
Input the road n radiofrequency signal RF1 ..., RFn, final output intermediate-freuqncy signal BB.Each receiving channel includes that a low noise is put
Big device module, a mixer module, a variable-gain amplifier module, n receiving channel share an electric current and turn voltage
Module；The low noise amplifier module of each receiving channel, mixer module and variable-gain amplifier module are complete on hardware
It is exactly the same.Power supply provide DC current by power positive end VDD flow through electric current turn voltage module, variable-gain amplifier module,
Mixer module, low noise amplifier module finally arrive ground GND, are multiplexed to electric current.Each receiving channel input is penetrated
Frequency voltage signal initially enters in low noise amplifier module, exports current radio frequency signal, then gives this current radio frequency signal
Enter in mixer module, export orthogonal current intermediate frequency signal, orthogonal current intermediate frequency signal is weighted by variable gain amplifier
After synthesize, export the current intermediate frequency signal of phase shift, the variable-gain amplifier module output of n receiving channel links together,
Shared electric current is sent into after the intermediate frequency dephased current Signal averaging of these receiving channels output and turns voltage module, is converted to
The output of frequency voltage signal.In the present embodiment, the DC current that power supply provides first flows through electric current by power positive end and turns voltage module, then
It is divided into the road n DC current, first flows into from the drain electrode of variable-gain amplifier module per DC current all the way, put from variable gain
The source electrode outflow of big device module, then flows into from the drain electrode of mixer module, flows out from the source electrode of mixer module, finally from low
The drain electrode of noise amplifier module flows into, and flows through low noise amplifier module to ground, which receives in entire phased array
It is multiplexed in modules in machine.
Wherein, low noise amplifier module includes a total bank tube and a common source pipe, the source electrode input radio frequency of total bank tube
Voltage signal connects bias inductors to GND simultaneously, drains as the signal output end all the way of differential radio frequency current signal；Common source pipe
Grid input radio frequency voltage signal, source electrode meet GND, drain as the another way signal output end of differential radio frequency current signal.Mixing
Device module includes eight NMOS tubes, and for the source electrode of NMOS tube as current radio frequency signal input terminal, drain electrode is used as current intermediate frequency signal
Output end, grid input difference orthogonal local oscillation signal.Variable-gain amplifier module includes 8 × (k+2) a NMOS tubes, and k is big
In 1 integer；Wherein 2 × (k+2) a NMOS tubes are that the source electrode of 2 × k NMOS tube in one group, every group is connected, and input four tunnels
Signal all the way in difference quadrature current intermediate frequency signal；The drain electrode of k NMOS tube of the first via is connected in every group, and connects first
The drain electrode of the source electrode of 2 NMOS tubes in upper layer on road, the k NMOS tube on the second tunnel is connected, and connects 2, the upper layer NMOS on the second tunnel
The source electrode of pipe；The drain electrode of 4 NMOS tubes in upper layer in every group is respectively as in the difference quadrature current intermediate frequency signal of four tunnel phase shifts
Signal all the way output；The grid of 8 × (k+2) a NMOS tubes connects VDD or GND through control switch.Electric current turns voltage module
Including four resistance, each resistance one end is connected with VDD, the other end respectively with the variable-gain amplifier module in each channel
Output is connected all the way.
Fig. 4 is an exemplary circuit of concrete application in the intermediate frequency dephased current multiplexing phased-array receiver of the present embodiment
Figure inputs the road n radio frequency letter as shown in figure 4, including n receiving channel with intermediate frequency dephased current multiplexing phased-array receiver respectively
Number RF1 ..., RFn, final output four road difference quadrature intermediate-freuqncy signal BBIP, BBIN, BBQP, BBQN.Each receiving channel
Comprising a low noise amplifier module, a mixer module, a variable-gain amplifier module, n receiving channel be total
Turn voltage module with an electric current；Low noise amplifier module, mixer module and the variable gain amplification of each receiving channel
Device module is identical on hardware.The DC current that power supply provides flows through electric current by power positive end VDD and turns voltage module, variable
Gain amplifier module, mixer module, low noise amplifier module finally arrive ground GND, to realize the multiplexing of electric current.
The input of the low noise amplifier module LNAm of m-th of receiving channel is radio frequency voltage signal RFm, is exported to pass through
The differential radio frequency current signal of amplification.It is total to bank tube M1 and common source pipe M2 by two NMOS tubes, a biasing resistor R1, one every
Straight capacitor C1 and a bias inductors L1 are constituted.M1 source electrode input radio frequency input signal RFm, while connecting L1 to GND；Grid
Connect bank tube bias voltage VBIAS_CG altogether；Drain electrode is the signal output end all the way of LNAm.M2 grid inputs RFm and passes through C1 blocking
Radiofrequency signal afterwards, while common source pipe bias level VBIAS_CS is connect by R1；Source electrode meets GND；Drain electrode is the another way of LNAm
Signal output end.
The input signal of the mixer module MIXERm of m-th of receiving channel is the differential radio frequency electric current letter of LNAm output
Number, output signal is four road difference quadrature current intermediate frequency signal IFIPm, IFQPm, IFINm, IFQNm.It is by eight NMOS tubes
M3 ..., M10 are constituted, and grid inputs four road difference quadrature local oscillation signal LOIP, LOIN, LOQP, LOQN.The wherein grid of M3 and M5
Pole inputs LOIP；The grid of M4 and M6 inputs LOIN；The grid input of M7, M9 are LOQP；The input of M8 and M10 grid is LOQN.
The source electrode of M3, M4, M7, M8 are connected, and input the differential radio frequency electric current of LNAm output all the way；The source electrode phase of M5, M6, M8, M10
Connect, and inputs the another way of the differential radio frequency electric current of LNAm output.M3 is connected with the drain electrode of M5, and M4 is connected with the drain electrode of M6, M7
It is connected with the drain electrode of M9, M8 is connected with the drain electrode of M10, the four road difference quadrature current intermediate frequency signal output ends as MIXERm.
The input signal of the variable-gain amplifier module VGAm of m-th of receiving channel is four tunnel difference of MIXERm output
Orthogonal current intermediate frequency signal, output signal are poor to be weighted synthesis tetra- tunnel Hou to four road difference quadrature intermediate-freuqncy signals of input
Divide orthogonal current intermediate frequency signal.VGAm is made of 8 × (k+2) a NMOS tubes.K NMOS tube MA1~k and k NMOS tube MB1
The source electrode of~k is connected, input signal IFIPm；K NMOS tube MC1~k and k NMOS tube MDThe source electrode of 1~k is connected, input
Signal IFINm；K NMOS tube ME1~k and k NMOS tube MFThe source electrode of 1~k is connected, input signal IFQPm；K NMOS tube
MG1~k and k NMOS tube MHThe source electrode of 1~k is connected, input signal IFQNm.K NMOS tube MAThe drain electrode of 1~k is connected, and
Connect the source electrode of M11 and M12；K NMOS tube MBThe drain electrode of 1~k is connected, and connects the source electrode of M13 and M14；K NMOS tube MC1
The drain electrode of~k is connected, and connects the source electrode of M15 and M16；K NMOS tube MDThe drain electrode of 1~k is connected, and connects M17's and M18
Source electrode；K NMOS tube METhe drain electrode of 1~k is connected, and connects the source electrode of M19 and M20；K NMOS tube MFThe drain electrode of 1~k is connected,
And connect the source electrode of M21 and M22；K NMOS tube MGThe drain electrode of 1~k is connected, and connects the source electrode of M23 and M24；K NMOS tube
MHThe drain electrode of 1~k is connected, with the source electrode for connecting M25 and M26.The drain electrode of M11, M16, M19, M24 are connected, and one as VGAm
Road output；The drain electrode of M12, M15, M20, M23 are connected, the output all the way as VGAm；The drain electrode phase of M13, M18, M22, M25
Even, the output all the way as VGAm；The drain electrode of M14, M17, M21, M26 are connected, the output all the way as VGAm.8 × (k+2) is a
The grid of NMOS tube can be controlled connection VDD or GND by control signal as needed.
Electric current turns voltage module I2V, by four resistance R2, R3, R4, R5 composition.In four road difference quadratures of VGAm output
Frequency current signal flows separately through R2, R3, R4, R5, converges to VDD, generates four road difference quadrature voltage intermediate frequency signal BBIP,
BBIN, BBQP, BBQN.Four road difference quadrature voltage intermediate frequency signal BBIP, BBIN, BBQP, BBQN are multiple for intermediate frequency dephased current
With the output of phased-array receiver.
RF phase shifter current multiplexing phased-array receiver disclosed in above-described embodiment and intermediate frequency dephased current are multiplexed phased array
Receiver reduces mutual conductance, the use across resistance unit, simplifies by carrying out current multiplexing in multichannel phased-array receiver
The circuit structure of the modules such as low noise amplifier module, variable gain amplifier reduces the complexity of receiver；In addition, each
A module does not have independent quiescent current, therefore low in energy consumption, and with the increase of number of channels, this advantage is further obvious.
Claims (10)
1. a kind of current multiplexing phased-array receiver, it is characterised in that: include n receiving channel, n is the integer greater than 1, each
Receiving channel all includes a low noise amplifier module, a quadrature generation circuit module and a variable gain amplifier mould
Block, n receiving channel shares a mixer module and an electric current turns voltage module；The low noise amplification of each receiving channel
Device module input radio frequency voltage signal all the way, output two-pass DINSAR current radio frequency signal to quadrature generation circuit module, it is described just
Generation circuit module output four road difference quadrature current radio frequency signals to variable-gain amplifier module is handed over to be weighted synthesis, institute
State the differential radio frequency current signal of variable-gain amplifier module output two-way phase shift；N variable-gain amplifier module output
Phase shift the superposition of differential radio frequency current signal after be input to mixer module, the mixer module exports four road difference quadratures
Current intermediate frequency signal to electric current turns voltage module, and the electric current turns voltage module and exports four road difference quadrature voltage intermediate frequency signals；
The electric current turns voltage module and is connected with power positive end VDD, and the DC current that power supply provides flows through electric current by power positive end and turns electricity
Die block, mixer module, variable-gain amplifier module, quadrature generation circuit module, low noise amplifier module, are finally arrived
Ground GND, is multiplexed in modules.
2. current multiplexing phased-array receiver according to claim 1, which is characterized in that power supply provide DC current by
VDD first flows through electric current and turns voltage module, then flows into from the drain electrode of mixer module, flows out from the source electrode of mixer module, then
It is divided into the road n DC current, first flows into from the drain electrode of variable-gain amplifier module per DC current all the way, put from variable gain
The source electrode outflow of big device module, passes through quadrature generation circuit module, finally flows into from the drain electrode of low noise amplifier module, stream
Through low noise amplifier module to GND.
3. current multiplexing phased-array receiver according to claim 1, it is characterised in that: the variable gain amplifier mould
Block includes 12 × k NMOS tube, and k is the integer greater than 1；Wherein 3 × k NMOS tube is 3 × k NMOS in one group, every group
Pipe source electrode is connected, and inputs the signal all the way in the four roads difference quadrature current radio frequency signal；K NMOS of the first via in every group
The drain electrode of pipe is connected to VDD through resistance respectively, and the drain electrode of the k NMOS tube on the second tunnel is connected, and the difference as the phase shift is penetrated
The signal output end all the way of frequency current signal；The drain electrode of the k NMOS tube on third road is connected, the differential radio frequency as the phase shift
The another way signal output end of current signal；The grid of 12 × k NMOS tube connects VDD or GND through control switch.
4. current multiplexing phased-array receiver according to claim 1, it is characterised in that: the electric current turns voltage module packet
Include four resistance；Each resistance one end is connected with VDD, and the other end is connected with the output all the way of the mixer module respectively.
5. a kind of current multiplexing phased-array receiver, it is characterised in that: include n receiving channel, n is the integer greater than 1, each
A receiving channel all includes a low noise amplifier module, a mixer module and a variable-gain amplifier module, n
A receiving channel shares an electric current and turns voltage module；The low noise amplifier module of each receiving channel inputs radio frequency electrical all the way
Signal, output two-pass DINSAR current radio frequency signal to mixer module are pressed, the mixer module exports in four road difference quadratures
Frequency current signal to variable-gain amplifier module is weighted synthesis, and the variable-gain amplifier module exports four Lu Yixiang
Difference quadrature current intermediate frequency signal；The difference quadrature current intermediate frequency signal of the phase shift of n variable-gain amplifier module output
It is input to electric current after superposition and turns voltage module, the electric current turns voltage module and exports four road difference quadrature voltage intermediate frequency signals；Institute
It states electric current and turns voltage module and be connected with power positive end VDD, the DC current that power supply provides flows through electric current by power positive end and turns voltage
Module, variable-gain amplifier module, mixer module, low noise amplifier module finally arrive ground GND, in modules
It is multiplexed.
6. current multiplexing phased-array receiver according to claim 5, it is characterised in that: power supply provide DC current by
VDD first flows through electric current and turns voltage module, is separated into the road n DC current, per DC current all the way first from variable gain amplifier
The drain electrode of module flows into, and flows out from the source electrode of variable-gain amplifier module, then flows into from the drain electrode of mixer module, from mixed
The source electrode of frequency device module flows out, and finally flows into from the drain electrode of low noise amplifier module, flows through low noise amplifier module and arrive
GND。
7. current multiplexing phased-array receiver according to claim 1 or 5, it is characterised in that: the low-noise amplifier
Module includes a total bank tube and a common source pipe, and the source electrode of bank tube inputs the radio frequency voltage signal and connects biased electrical simultaneously altogether
Feel GND, drains as the signal output end all the way of the differential radio frequency current signal；The grid of common source pipe inputs the radio frequency electrical
Signal is pressed, source electrode meets GND, drains as the another way signal output end of the differential radio frequency current signal.
8. current multiplexing phased-array receiver according to claim 1 or 5, it is characterised in that: the mixer module packet
Eight NMOS tubes are included, as current radio frequency signal input terminal, drain electrode exports the source electrode of the NMOS tube as current intermediate frequency signal
End, grid input difference orthogonal local oscillation signal.
9. current multiplexing phased-array receiver according to claim 5, it is characterised in that: the variable gain amplifier mould
Block includes 8 × (k+2) a NMOS tubes, and k is the integer greater than 1；Wherein 2 × (k+2) a NMOS tubes are 2 × k in one group, every group
The source electrode of a NMOS tube is connected, and inputs the signal all the way in the four roads difference quadrature current intermediate frequency signal；The first via in every group
The drain electrode of k NMOS tube be connected, and connect the source electrode of 2 NMOS tubes in upper layer of the first via, the leakage of the k NMOS tube on the second tunnel
Extremely it is connected, and connects the source electrode of 2 NMOS tubes in upper layer on the second tunnel；The drain electrode of 4 NMOS tubes in upper layer in every group respectively as
The output of signal all the way in the difference quadrature current intermediate frequency signal of four tunnel phase shift；The grid of 8 × (k+2) a NMOS tubes is through controlling
System switch connection VDD or GND.
10. current multiplexing phased-array receiver according to claim 5, it is characterised in that: the electric current turns voltage module
Including four resistance, each resistance one end is connected with VDD, the other end respectively with the variable-gain amplifier module in each channel
Output is connected all the way.
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