CN108152798A - Current multiplexing phased-array receiver - Google Patents
Current multiplexing phased-array receiver Download PDFInfo
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- CN108152798A CN108152798A CN201711133909.4A CN201711133909A CN108152798A CN 108152798 A CN108152798 A CN 108152798A CN 201711133909 A CN201711133909 A CN 201711133909A CN 108152798 A CN108152798 A CN 108152798A
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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
-
- 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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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Amplifiers (AREA)
Abstract
Current multiplexing phased-array receiver disclosed by the invention, the frequency range difference according to residing for being realized phase shift function are divided into RF phase shifter and intermediate frequency dephased current multiplexing phased-array receiver.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；It is multiplexed in phased-array receiver in intermediate frequency dephased current, 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 apparent.
Description
Technical field
The present invention relates to current multiplexing phased-array receivers, belong to microelectronics and Solid State Electronics technology and simulation are integrated
Field of circuit technology.
Background technology
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 for handling electromagnetic signal received by antenna, be amplified, frequency conversion, filtering, be usually made of following components：Low noise
Acoustic amplifier, phase shifter, frequency mixer, Analog Baseband.
Phased-array receiver mainly realizes phase shift by way of Vector modulation, according to residing for being realized phase shift function frequency range
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 in 0.18-um SiGe BiCMOS
Technology ", IEEE JOURNALOF 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, the et al. " A65nm of intermediate frequency phase shift
CMOS 4-Element Sub-34mW/Element 60GHz Phased-Array Transceiver”,IEEE
2011. bibliography 2 of JOURNALOF SOLID-STATE CIRCUITS, VOL.46, NO.12, DECEMBER), antenna receives
Signal amplified by low-noise amplifier, be sent directly into frequency mixer, provide two-way orthogonal output signal by complex mixer, two-way
Two-way orthogonal signalling after signal is weighted respectively after synthesis phase shift, are finally amplified filtering by Analog Baseband.However, nothing
By being for RF phase shifter phased-array receiver or intermediate frequency phase shift phased-array receiver, in current design, received by antenna
Signal in the processing procedure of receiver modules, mainly handled in the form of a voltage, due to plurality of voltages believe
It number can not directly synthesize, needing, which increases stage circuit, converts voltage to electric current to realize the synthesis of multiple signals, so as to increase
The complexity of receiver；In addition, the modules of receiver have independent quiescent current, power consumption is big, with receiver channel
The increase of number, 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, makes
The synthesizer on 1 tunnel is synthesized with two 4 tunnels and 2 tunnels synthesize the synthesizer on 1 tunnel, 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 JOURNALOF SOLID-STATE CIRCUITS, VOL.43, NO.12, DECEMBER, 2008. are referred to
Document 4), but estimated current multiplexing is only realized in the single-channel receiver not comprising phase shift function or phase shifter.How
Current multiplexing is carried out in multichannel phased-array receiver, it is the master of the present invention to realize low complex degree, low-power consumption phased-array receiver
Want research topic.
Invention content
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, effectively reduces system complexity and system power dissipation.
Technical solution：To realize upper goal of the invention, the present invention adopts the following technical scheme that：
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, comprising n receiving channel, n is the integer more 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
Go out two-pass DINSAR current radio frequency signal to quadrature generation circuit module, the quadrature generation circuit module exports four road difference quadratures
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
Mixer module is input to, the mixer module exports four road difference quadrature current intermediate frequency signal to electric currents and 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 is flowed out from the source electrode of mixer module, is separated into n roads 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 common bank tube and a common source pipe, altogether
The source electrode of bank tube inputs the radio frequency voltage signal and connects bias inductors simultaneously to GND, drains and believes for the differential radio frequency electric current
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 more 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 switchs connection VDD or GND through control.
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 is as current intermediate frequency signal output terminal, grid input difference orthogonal local oscillation signal.
In preferred embodiments, the electric current turn voltage module include four resistance；Each resistance one end and VDD phases
Even, the other end is connected respectively with the output all the way of the mixer module.
The present invention also provides a kind of current multiplexing phased-array receivers, and phase shift function is realized in intermediate-frequency band, are middle frequency displacement
Phase current is multiplexed phased-array receiver, and comprising n receiving channel, n is the integer more 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
Dividing current radio frequency signal, the mixer module exports four road difference quadrature current intermediate frequency signals to variable increasing to mixer module
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
N roads 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 outflow of module, then flows into from the drain electrode of mixer module, is flowed 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 common bank tube and a common source pipe, altogether
The source electrode of bank tube inputs the radio frequency voltage signal and connects bias inductors simultaneously to GND, drains and believes for the differential radio frequency electric current
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 is as current intermediate frequency signal output terminal, grid input difference orthogonal local oscillation signal.
In preferred embodiments, the variable-gain amplifier module include 8 × (k+2) a NMOS tubes, k be more 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 source electrode of 2 NMOS tubes in upper strata all the way, the drain electrode of the k NMOS tube on the second tunnel are connected, and connect 2, the upper strata on the second tunnel
The source electrode of NMOS tube；The drain electrode of 4 NMOS tubes in upper strata in every group is respectively as the difference quadrature medium frequency electric of four tunnel phase shift
Flow the output of signal all the way in signal；The grid of 8 × (k+2) a NMOS tubes switchs connection VDD or GND through control.
In preferred embodiments, the electric current turn voltage module include four resistance, each resistance one end and VDD phases
Even, the other end is connected respectively with the output all the way of the variable-gain amplifier module of each channel.
Advantageous effect：The present invention uses above technical scheme compared with prior art, by being received in multichannel phased array
Current multiplexing is carried out in machine, there is following technique effect：(1) mutual conductance, the use across resistance unit are reduced, simplifies 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, therefore low in energy consumption, and with the increase of number of channels, this advantage is further apparent.
Description of the drawings
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 n road radiofrequency signals (RF1 ..., RFn), final output intermediate-freuqncy signal (BB).Each receiving channel contain one it is low
Noise amplifier module, a quadrature generation circuit module, a variable-gain amplifier module, n receiving channel share one
A mixer module and an electric current turn voltage module；Low noise amplifier module, the quadrature generation circuit of each receiving channel
Module is identical on hardware with variable-gain amplifier module.The DC current that power supply provides is flowed by power positive end (VDD)
Turn voltage module, mixer module, variable-gain amplifier module, quadrature generation circuit module, low-noise amplifier through electric current
Module finally arrives ground (GND), 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 then is sent into quadrature generation circuit module, generates
Orthogonal current radio frequency signal, orthogonal current signal synthesize after variable-gain amplifier module weights, and export phase shift
Current radio frequency signal, the variable-gain amplifier module output of n channel link together, the phase shift of these receiving channels output
Current radio frequency signal superposition after be sent into a shared mixer module and complete current radio frequency signal to current intermediate frequency signal
Conversion, finally again by this current intermediate frequency signal feeding one shared electric current turn voltage module, be converted to voltage intermediate frequency signal
Output.In the present embodiment, the DC current of power supply offer first flows through electric current by power positive end and turns voltage module, then from frequency mixer
The drain electrode of module flows into, and is flowed out from the source electrode of mixer module, is separated into n roads DC current, per DC current all the way first from
The drain electrode of variable-gain amplifier module flows into, and is flowed out from the source electrode of variable-gain amplifier module, passes through orthogonal generation electricity
Road module is finally flowed into from the drain electrode of low noise amplifier module, flows through low noise amplifier module to ground, which exists
It is multiplexed in modules in entire phased-array receiver.
Wherein, low noise amplifier module includes the source electrode input radio frequency of a common bank tube and a common source pipe, altogether bank tube
Voltage signal connects bias inductors to GND simultaneously, the signal output end all the way to drain as differential radio frequency current signal；Common source pipe
Grid input radio frequency voltage signal, source electrode meet GND, the another way signal output end to drain as differential radio frequency current signal.It is variable
Gain amplifier module includes 12 × k NMOS tube, and k is the integer more 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 switchs connection VDD or GND through control.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 used as current intermediate frequency signal defeated
Outlet, grid input difference orthogonal local oscillation signal.Electric current turns voltage module and includes four resistance；Each resistance one end and VDD phases
Even, the other end is connected respectively with the output all the way of mixer module.
Fig. 2 is an exemplary circuit of concrete application in the RF phase shifter current multiplexing phased-array receiver of the present embodiment
Figure as shown in Fig. 2, RF phase shifter current multiplexing phased-array receiver includes n receiving channel, inputs n roads radiofrequency signal respectively
(RF1 ..., RFn), four road difference quadrature intermediate-freuqncy signal (BBIP, BBIN, BBQP, BBQN) of final output.Each receiving channel
All comprising a low noise amplifier module, a quadrature generation circuit module, a variable-gain amplifier module, n connect
Receipts channel shares a mixer module and an electric current turns voltage module；The low noise amplifier module of each receiving channel,
Quadrature generation circuit module is identical on hardware with variable-gain amplifier module.The DC current that power supply provides is by power supply
Anode (VDD) flows through electric current and turns voltage module, mixer module, variable-gain amplifier module, quadrature generation circuit module, low
Noise amplifier module finally arrives ground (GND), electric current is multiplexed.
The input of the low noise amplifier module (LNAm) of m-th of receiving channel is radio frequency voltage signal (RFm), exports and is
Differential radio frequency current signal by amplification.It is by two NMOS tubes (bank tube M1 and common source pipe M2 altogether), a biasing resistor
(R1), a capacitance (C1) and a bias inductors (L1) are formed.M1 source electrode input radio frequency input signals (RFm), together
When connect L1 to GND；The common bank tube bias voltage (VBIAS_CG) of grid connection；The signal output end all the way to drain as LNAm.M2
Grid inputs radiofrequency signals of the RFm after C1 blockings, while connects common source pipe bias level (VBIAS_CS) by R1；Source electrode connects
GND；The another way signal output end to drain as LNAm.
Two-pass DINSAR electric current letter of the input of the quadrature generation circuit module (QGCm) of m-th of receiving channel for LNAm outputs
Number, it exports as four road difference quadrature current radio frequency signals (RFIPm, RFQPm, RFINm, RFQNm).Transmission may be used in QGCm
The modes such as line, 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 is four tunnel difference of QGCm outputs
Orthogonal radio frequency current signal, output signal are that the difference being weighted after synthesizing to the difference quadrature current radio frequency signal of input is penetrated
Frequency current signal.VGAm is made of 12 × k NMOS tube and 4 × k resistance.K NMOS tube (MA1 ..., MAK), k NMOS tube
(MB1 ..., MBAnd k NMOS tube (M k)C1 ..., MCK) source electrode is connected, input signal RFIPm.K NMOS tube
(MD1 ..., MDK), k NMOS tube (ME1 ..., MEAnd k NMOS tube (M k)F1 ..., MFK) source electrode is connected, input signal
RFINm.K NMOS tube (MG1 ..., MGK), k NMOS tube (MH1 ..., MHAnd k NMOS tube (M k)I1 ..., MIK) source
Extremely it is connected, input signal RFQPm.K NMOS tube (MJ1 ..., MJK), k NMOS tube (MK1 ..., MKAnd k NMOS tube k)
(ML1 ..., MLK) source electrode is connected, input signal RFQNm.K NMOS tube (MA1 ..., MAK) drain electrode respectively with k resistance
(RA1 ..., RAK) one end is connected, k resistance (RA1 ..., RAK) the other end is connected with VDD.K NMOS tube (MF1 ...,
MFK) drain electrode respectively with k resistance (RF1 ..., RFK) one end is connected, k resistance (RF1 ..., RFK) the other end with
VDD is connected.K NMOS tube (MG1 ..., MGK) drain electrode respectively with k resistance (RG1 ..., RGK) one end is connected, k resistance
(RG1 ..., RGK) the other end is connected with VDD.K NMOS tube (ML1 ..., MLK) drain electrode respectively with k resistance
(RL1 ..., RLK) one end is connected, k resistance (RL1 ..., RLK) the other end is connected with VDD.K NMOS tube (MB1 ...,
MBK), k NMOS tube (MD1 ..., MDK), k NMOS tube (MH1 ..., MHAnd k NMOS tube (M k)J1 ..., MJK) drain electrode
It is connected, the signal output end all the way as VGAm.K NMOS tube (MC1 ..., MCK), k NMOS tube (ME1 ..., MEK), k
NMOS tube (MI1 ..., MIAnd k NMOS tube (M k)K1 ..., MKK) drain electrode is connected, and the another way signal as VGAm exports
End.The grid of 12 × k NMOS tube can be controlled connection VDD or GND by control signal as needed.
Differential radio frequency current signal of the input signal of mixer module (MIXER) for VGAm outputs, output signal four
Road difference quadrature current intermediate frequency signal.It is made of eight NMOS tubes (M3 ..., M10), and grid inputs four road difference quadrature local oscillators
Signal (LOIP, LOIN, LOQP, LOQN).The grid input LOIP of wherein M3 and M5；The grid input LOIN of M4 and M6；M7, M9
Grid input for LOQP；The input of M8 and M10 grids is LOQN.The source electrode of M3, M4, M7, M8 are connected, and input VGAm outputs
Differential radio frequency current signal is all the way；The source electrode of M5, M6, M8, M10 are connected, and input the differential radio frequency electric current letter of VGAm outputs
Number another 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, the drain electrode phase of M8 and M10
Even, the four road difference quadrature current intermediate frequency signal output terminals as MIXER.
Electric current turns voltage module (I2V), is made of four resistance (R2, R3, R4, R5).Four tunnel difference of MIXER outputs are just
Current intermediate frequency signal is handed over to flow separately through R2, R3, R4, R5, converges to VDD, generates four road difference quadrature voltage intermediate frequency signals
(BBIP, BBIN, BBQP, BBQN).The four roads difference quadrature voltage intermediate frequency signal (BBIP, BBIN, BBQP, BBQN) is moved for radio frequency
Phase current is multiplexed 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 n road radiofrequency signals (RF1 ..., RFn), final output intermediate-freuqncy signal (BB).Each receiving channel includes a low noise
Acoustic amplifier module, a mixer module, a variable-gain amplifier module, n receiving channel share an electric current and turn
Voltage module；Low noise amplifier module, mixer module and the variable-gain amplifier module of each receiving channel are in hardware
It is upper identical.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), electric current are multiplexed.Each receiving channel
The radio frequency voltage signal of input is initially entered in low noise amplifier module, current radio frequency signal is exported, then by this radio frequency electrical
It flows signal to be sent into mixer module, exports orthogonal current intermediate frequency signal, orthogonal current intermediate frequency signal is put by variable gain
It is synthesized after big device weighting, exports the current intermediate frequency signal of phase shift, the variable-gain amplifier module output connection of n receiving channel
Together, it is sent into a shared electric current after the intermediate frequency dephased current Signal averaging of these receiving channels output and turns voltage module,
Be converted to voltage intermediate frequency signal output.In the present embodiment, the DC current that power supply provides first is flowed through electric current turn electricity by power positive end
Die block is separated into n roads DC current, is first flowed into per DC current all the way from the drain electrode of variable-gain amplifier module, from
The source electrode outflow of variable-gain amplifier module, then flows into from the drain electrode of mixer module, from the source electrode stream of mixer module
Go out, finally flowed into from the drain electrode of low noise amplifier module, flow through low noise amplifier module to ground, the DC current is entire
It is multiplexed in modules in phased-array receiver.
Wherein, low noise amplifier module includes the source electrode input radio frequency of a common bank tube and a common source pipe, altogether bank tube
Voltage signal connects bias inductors to GND simultaneously, the signal output end all the way to drain as differential radio frequency current signal；Common source pipe
Grid input radio frequency voltage signal, source electrode meet GND, the another way signal output end to drain as differential radio frequency current signal.Mixing
Device module includes eight NMOS tubes, and the source electrode of NMOS tube is as current radio frequency signal input terminal, and drain electrode is as current intermediate frequency signal
Output terminal, 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 source electrode of 2 NMOS tubes in upper strata on road, the drain electrode of the k NMOS tube on the second tunnel are connected, and connect 2, the upper strata NMOS on the second tunnel
The source electrode of pipe；The drain electrode of 4 NMOS tubes in upper strata 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 switchs connection VDD or GND through control.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 of 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 as shown in figure 4, including n receiving channels with intermediate frequency dephased current multiplexing phased-array receiver, inputs n roads radio frequency letter respectively
Number (RF1 ..., RFn), four road difference quadrature intermediate-freuqncy signal (BBIP, BBIN, BBQP, BBQN) of final output.Each receives logical
Road is all comprising a low noise amplifier module, a mixer module, a variable-gain amplifier module, and n receives and lead to
Road shares an electric current and turns voltage module；Low noise amplifier module, mixer module and the variable gain of each receiving channel
Amplifier module is identical on hardware.The DC current that power supply provides flows through electric current by power positive end (VDD) and turns voltage-mode
Block, variable-gain amplifier module, mixer module, low noise amplifier module finally arrive ground (GND), it is achieved thereby that electric
The multiplexing of stream.
The input of the low noise amplifier module (LNAm) of m-th of receiving channel is radio frequency voltage signal (RFm), exports and is
Differential radio frequency current signal by amplification.It is by two NMOS tubes (bank tube M1 and common source pipe M2 altogether), a biasing resistor
(R1), a capacitance (C1) and a bias inductors (L1) are formed.M1 source electrode input radio frequency input signals (RFm), together
When connect L1 to GND；The common bank tube bias voltage (VBIAS_CG) of grid connection；The signal output end all the way to drain as LNAm.M2
Grid inputs radiofrequency signals of the RFm after C1 blockings, while connects common source pipe bias level (VBIAS_CS) by R1；Source electrode connects
GND；The another way signal output end to drain as LNAm.
Differential radio frequency electric current letter of the input signal of the mixer module (MIXERm) of m-th of receiving channel for LNAm outputs
Number, output signal is four road difference quadrature current intermediate frequency signals (IFIPm, IFQPm, IFINm, IFQNm).It is by eight NMOS tubes
(M3 ..., M10) is formed, and grid inputs four road difference quadrature local oscillation signals (LOIP, LOIN, LOQP, LOQN).Wherein M3 and M5
Grid input LOIP；The grid input LOIN of M4 and M6；The grid input of M7, M9 are LOQP；M8 and M10 grids input
LOQN.The source electrode of M3, M4, M7, M8 are connected, and input the differential radio frequency electric current of LNAm outputs all the way；M5, M6, M8, M10's
Source electrode is connected, and inputs the another way of the differential radio frequency electric current of LNAm outputs.M3 is connected with the drain electrode of M5, the drain electrode phase of M4 and M6
Even, M7 is connected with the drain electrode of M9, and M8 is connected with the drain electrode of M10, and the four road difference quadrature current intermediate frequency signals as MIXERm are defeated
Outlet.
The input signal of the variable-gain amplifier module (VGAm) of m-th of receiving channel is poor for four tunnels of MIXERm outputs
Divide orthogonal current intermediate frequency signal, output signal is that four road difference quadrature intermediate-freuqncy signals of input are weighted with tetra- tunnels of synthesis Hou
Difference quadrature current intermediate frequency signal.VGAm is made of 8 × (k+2) a NMOS tubes.K NMOS tube (MA1 ..., MAK) and k is a
NMOS tube (MB1 ..., MBK) source electrode is connected, input signal IFIPm；K NMOS tube (MC1 ..., MCAnd k NMOS tube k)
(MD1 ..., MDK) source electrode is connected, input signal IFINm；K NMOS tube (ME1 ..., MEAnd k NMOS tube (M k)F1 ...,
MFK) source electrode is connected, input signal IFQPm；K NMOS tube (MG1 ..., MGAnd k NMOS tube (M k)H1 ..., MHK) source
Extremely it is connected, input signal IFQNm.K NMOS tube (MA1 ..., MAK) drain electrode is connected, and connects the source electrode of M11 and M12；K
NMOS tube (MB1 ..., MBK) drain electrode is connected, and connects the source electrode of M13 and M14；K NMOS tube (MC1 ..., MCK) drain electrode
It is connected, and connects the source electrode of M15 and M16；K NMOS tube (MD1 ..., MDK) drain electrode is connected, and connects the source of M17 and M18
Pole；K NMOS tube (ME1 ..., MEK) drain electrode is connected, and connects the source electrode of M19 and M20；K NMOS tube (MF1 ..., MFk)
Drain electrode be connected, and connect the source electrode of M21 and M22；K NMOS tube (MG1 ..., MGK) drain electrode is connected, and connects M23 and M24
Source electrode；K NMOS tube (MH1 ..., MHK) drain electrode is connected, the source electrode with connecting M25 and M26.M11, M16, M19, M24's
Drain electrode is connected, the output all the way as VGAm；The drain electrode of M12, M15, M20, M23 are connected, the output all the way as VGAm；M13,
The drain electrode of M18, M22, M25 are connected, the output all the way as VGAm；The drain electrode of M14, M17, M21, M26 are connected, as VGAm's
It exports all the way.The grid of 8 × (k+2) a NMOS tubes can be controlled connection VDD or GND by control signal as needed.
Electric current turns voltage module (I2V), is made of four resistance (R2, R3, R4, R5).Four tunnel difference of VGAm outputs are just
Current intermediate frequency signal is handed over to flow separately through R2, R3, R4, R5, converges to VDD, generates four road difference quadrature voltage intermediate frequency signals
(BBIP, BBIN, BBQP, BBQN).The four roads difference quadrature voltage intermediate frequency signal (BBIP, BBIN, BBQP, BBQN) is middle frequency displacement
Phase current is multiplexed the output of phased-array receiver.
RF phase shifter current multiplexing phased-array receiver disclosed in above-described embodiment and intermediate frequency dephased current multiplexing phased array
Receiver by carrying out current multiplexing in multichannel phased-array receiver, reduces mutual conductance, the use across resistance unit, simplifies
The circuit structure of the modules such as low noise amplifier module, variable gain amplifier reduces the complexity of receiver；It is 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 apparent.
Claims (10)
1. a kind of current multiplexing phased-array receiver, it is characterised in that：Comprising n receiving channel, n is the integer more 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 is handed over to export four road difference quadrature current radio frequency signal to variable-gain amplifier modules and is 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, is then flowed into from the drain electrode of mixer module, is flowed out from the source electrode of mixer module, then
It is divided into n roads 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, is finally flowed 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 more 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 switchs connection VDD or GND through control.
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 respectively with the output all the way of the mixer module.
5. a kind of current multiplexing phased-array receiver, it is characterised in that：Comprising n receiving channel, n is the integer more than 1, each
A receiving channel is all comprising 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 is exported in four road difference quadratures
Frequency current signal to variable-gain amplifier module is weighted synthesis, and the variable-gain amplifier module exports four tunnel phase shifts
Difference quadrature current intermediate frequency signal；The difference quadrature current intermediate frequency signal of the phase shift of n variable-gain amplifier module output
Electric current is input to 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 n roads 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, is then flowed into from the drain electrode of mixer module, from mixed
The source electrode outflow of frequency device module, 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 common 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, the signal output end all the way to drain as the differential radio frequency current signal；The grid of common source pipe inputs the radio frequency electrical
Signal is pressed, source electrode meets GND, the another way signal output end to drain as 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 more 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 strata 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 strata on the second tunnel；The drain electrode of 4 NMOS tubes in upper strata 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 control
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 of each channel
Output is connected all the way.
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