CN108768555A - Digital control type adjustable microwave delayer and its time-delay test method - Google Patents
Digital control type adjustable microwave delayer and its time-delay test method Download PDFInfo
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- CN108768555A CN108768555A CN201810952222.1A CN201810952222A CN108768555A CN 108768555 A CN108768555 A CN 108768555A CN 201810952222 A CN201810952222 A CN 201810952222A CN 108768555 A CN108768555 A CN 108768555A
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Abstract
The invention discloses a kind of digital control type adjustable microwave delayer and its time-delay test methods, belong to Microwave Measurement Technique field.The digital control type adjustable microwave delayer, including outer cover plate, inner cover plate, pcb board, power supply board and box body；The both sides of box body are provided with connector, and power supply board, pcb board, inner cover plate are successively set in box body from top to bottom, and outer cover plate is arranged at the top of box body；Pcb board is provided with radio-frequency module, and control module is connect with radio-frequency module, and power module is separately connected with control module, radio-frequency module；Control module includes programmable logic device；Radio-frequency module includes power division network, delay branch, transmitting branch and receiving branch, and power division network is connect with delay branch, and delay branch is connect with transmitting branch, receiving branch；Each delay branch includes that 4 wave retarders, two-way amplifier, balanced device, numerical-control attenuator, 4 delayers and 8 wave retarders, 8 wave retarders are connected with switch.
Description
Technical field
The present embodiments relate to Microwave Measurement Technique field, more particularly to a kind of digital control type adjustable microwave delayer
And its time-delay test method.
Background technology
In radar communications system, when needing to carry out certain to the radiofrequency signal for sending out or receiving due to many occasions
Between postpone, the application of digital control type adjustable microwave delayer is more and more extensive.Digital control type adjustable microwave delayer can
Electromagnetic wave round-trip required time between radar antenna and target is simulated, and is needed to electricity in the channel simulator of radio station
The high-frequency signal that platform is sent out carries out different time delays, carrys out interference etc. of the simulating multi-path transmission to radio station.
Digital control type adjustable microwave delayer includes microwave amplifier, microwave delayer, microwave switch, according to external number
Word control signal is adjusted itself delay state, and the delay inequality requirement in test between each state is very high, to initial
The delay precision of state is without too high request.
At present on the market percents are mostly used greatly to the measuring accuracy of delay in X-band vector network analyzer,
I.e. when microwave module Time delay measurement maximum range is 100ns ranks, measuring accuracy is generally in 1ns or so.In consideration of it, working as microwave
Module delay be millisecond grade, and its adjustable minimum step be 25ps when, test to vector network analyzer require high, precision
It needs to reach 0.0025%, digital control type adjustable microwave delayer can not be prolonged using common vector network analyzer
When test.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of digital control type adjustable microwave delayers
And its time-delay test method.The technical solution is as follows：
In a first aspect, provide a kind of digital control type adjustable microwave delayer, including outer cover plate, inner cover plate, pcb board,
Power supply board and box body；
The both sides of box body are provided with connector, and power supply board, pcb board, inner cover plate are successively set in box body from top to bottom, outside
Cover board is arranged at the top of box body；
Control module and power module are provided on power supply board, pcb board is provided with radio-frequency module, control module and radio frequency mould
Block connects, and power module is separately connected with control module, radio-frequency module；
Power module includes voltage-stablizer, capacitance resistance component；
Control module includes programmable logic device, digital time delayer, driver, diode and triode；
Radio-frequency module includes power division network, delay branch, transmitting branch and receiving branch, and power division network connects with delay branch
It connects, delay branch is separately connected with transmitting branch, receiving branch；
Power division network includes that 2 couplers and 5 power splitters, the first coupler are connect with the first power splitter, the first work(point
Device is connect with the second power splitter, third power splitter, and third power splitter is connect with the 4th power splitter, the 4th power splitter and the 5th work(point
Device, the connection of the second coupler；
Each delay branch includes 4 wave retarders, two-way amplifier, balanced device, numerical-control attenuator, 4 delayers and 8
Wave retarder, 8 wave retarders are connected with switch；
Each transmitting branch includes driving amplifier, intermediate power amplifier and coupler, and driving amplifier is connected with switch,
It switchs and is connect with 8 wave retarders in delay branch, coupler is connect with circulator；
Each receiving branch includes limiter, numerical-control attenuator, low-noise amplifier, and low-noise amplifier connects with switch
It connects, switchs and connect with 8 wave retarders in delay branch, limiter is connect with circulator；
Circulator is connect with antenna port, the first coupler, the second coupler, third coupler and the 4th coupler difference
It is connect with output port is received.
Optionally, in each transmitting branch, coupler is connect with power-sensing circuit, the output end of power-sensing circuit with
The connection of rail-to-rail in-phase proportion operational amplifier, in the output end and control module of rail-to-rail in-phase proportion operational amplifier can
Programmed logic device connects.
Optionally, radio-frequency module includes 4 delay branches, and 4 wavelength in the first delay branch and the second delay branch prolong
When device connect respectively with the second power splitter, 4 wave retarders that third is delayed in branch and the 4th delay branch are respectively with the 5th
Power splitter connects；
In each delay branch, 4 wave retarders, the first two-way amplifier, the first balanced device, numerical-control attenuator, 4
Delayer, the second two-way amplifier, the second balanced device, 8 wave retarders are sequentially connected.
Second aspect provides a kind of time-delay test method of digital control type adjustable microwave delayer, digital control type
Adjustable microwave delayer is the digital control type adjustable microwave delayer as shown in first aspect, and digital control type adjustable microwave prolongs
When device connect with vector network analyzer, this method includes：
Digital control type adjustable microwave delayer emits radiofrequency signal, and radiofrequency signal is delayed with digital control type adjustable microwave
It is stepping into line delay using predetermined time interval on the basis of the ground state of device；
Radiofrequency signal is received by vector network analyzer, obtains detection data, detection data is pair of frequency and phase
It should be related to；
According to the measuring unit of detection data and vector network analyzer, overturning of the radiofrequency signal in i-th of frequency point is determined
Number, measuring unit include unwrapped phase and phase；
Actual phase offset of the radiofrequency signal in i-th of frequency point is determined according to overturning number；
According to the correspondence of actual phase offset and delay time, delay time is determined；
The delay precision of digital control type adjustable microwave delayer is determined according to delay time and predetermined time interval.
Optionally, when measuring unit is phase, according to the measuring unit of institute's detection data and vector network analyzer,
Determine radiofrequency signal i-th of frequency point overturning number, including：
Determine that fold number, sawtooth number are equal to fold time according to the sawtooth number in the corresponding line chart of test data
Number.
Optionally, when measuring unit is unwrapped phase, according to institute's detection data and vector network analyzer
Measuring unit determines the overturning number of digital control type adjustable microwave delayer, including：
The phase offset of any two frequency point is obtained according to detection data；
Overturning number is determined according to following formula one and formula two；
PG=360 × n+p' × G formula two；
Wherein, p is that the actual phase of radiofrequency signal deviates, and p ' is the phase offset in detection data, and G is frequency, and n is to turn over
Turn number, d is the delay time of radiofrequency signal.
Optionally, according to measuring unit and overturning number, actual phase offset of the radiofrequency signal in i-th of frequency point is determined,
Including：
Obtain the corresponding phase offset of i-th of frequency point in detection data；
The actual phase offset of i-th of frequency point is determined according to formula three；
Yi=XiThe formula of+n × 360 three；
Wherein, YiFor the actual phase offset of i-th of frequency point, XiIt is inclined for the corresponding phase of i-th of frequency point in detection data
It moves, n is overturning number.
Optionally, according to the correspondence of actual phase offset and delay time, delay time is determined, including：
According to actual phase offset and formula one, delay time is determined；
Wherein, p is that the actual phase of radiofrequency signal deviates, and G is frequency, and n is overturning number, and d is the delay of radiofrequency signal
Time.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
Power self-checking circuit in digital control type adjustable microwave delayer and rail-to-rail (rail-to-rail) same to phase
Proportion operational amplifier realizes the function to transmission power self-test,
Directly test is substituted with phase offset to be delayed, solve now adjustable to digital control type when carrying out delay test
The low problem of the delay test precision of microwave delayer；The vector network point that can use that delay test precision is 1% is reached
Analyzer tests the effect of the delay precision of digital adjustable microwave delayer, reduces in delay test to vector network point
The requirements for high precision of analysis.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structural representation of digital control type adjustable microwave delayer shown according to an exemplary embodiment
Figure；
Fig. 2 is a kind of structural blast of digital control type adjustable microwave delayer shown according to an exemplary embodiment
Figure；
Fig. 3 is a kind of principle schematic of radio-frequency module shown according to an exemplary embodiment；
Fig. 4 is the principle schematic of voltage amplifier circuit in a kind of radio-frequency module shown according to an exemplary embodiment；
Fig. 5 is a kind of delay test side of digital control type adjustable microwave delayer shown according to an exemplary embodiment
The flow chart of method；
Fig. 6 is that the test data that vector network analyzer obtains under two kinds of measuring units corresponds to line chart；
Fig. 7 is a kind of delay test of the digital control type adjustable microwave delayer shown according to another exemplary embodiment
The flow chart of method；
Fig. 8 is a kind of delay test of the digital control type adjustable microwave delayer shown according to a further exemplary embodiment
The flow chart of method.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.
It please refers to Fig.1 and Fig. 2, schematically illustrates digital control type adjustable microwave provided in an embodiment of the present invention and prolong
When device structure chart, which includes outer cover plate 6, inner cover plate 5, pcb board 4, power supply board 3 and box
Body 1.
The both sides of box body 1 are provided with connector 2.Power supply board 3, pcb board 4, inner cover plate 5 are successively set on box body from top to bottom
In 1, outer cover plate 6 is arranged at the top of box body 1.
Optionally, power supply board is FR4 plates, and pcb board is Rogers5880 plates.
Control module and power module are provided on power supply board, pcb board is provided with radio-frequency module, control module and radio frequency mould
Block connects, and power module is separately connected with control module, radio-frequency module.
Power module includes all kinds of voltage-stablizers, capacitance resistance component.Optionally, voltage-stablizer LDO.
Capacitance resistance ware is resistance and capacitance.
Control module includes programmable logic device, digital time delayer, each quasi-driver, diode and triode.It is optional
, programmable logic device CPLD.
Radio-frequency module includes power division network, delay branch, transmitting branch and receiving branch.Power division network connects with delay branch
It connects, delay branch is separately connected with transmitting branch, receiving branch.
Transmitting branch is sent to antenna port for being amplified to pumping signal.Receiving branch is used for antenna end
Mouth received signal carries out Linear Amplifer.Delayed branch is for postponing signal.Power division network is used for each channel
Signal is allocated.
Power module is for realizing voltage stabilizing, the adjustment to power supply.
Control module is for realizing power protection, data serioparallel exchange, transmitting-receiving time-sharing work, delay state control switching etc.
Function.
Fig. 3 schematically illustrates the principle schematic of radio-frequency module.
As shown in figure 3, power division network includes 2 couplers and 5 power splitters, the first coupler and the first power splitter connect
It connects, the first power splitter is connect with the second power splitter, third power splitter, and third power splitter is connect with the 4th power splitter, the 4th work(point
Device is connect with the 5th power splitter, the second coupler.
Radio-frequency module includes 4 delay branches, and the first delay branch and the second delay branch connect with the second power splitter respectively
It connects, third delay branch and the 4th delay branch are connect with the 5th power splitter respectively.
Each delay branch includes 4 wave retarders, two-way amplifier, balanced device, numerical-control attenuator, 4 delayers and 8
Wave retarder.
Each channel includes switch and circulator.
In each delay branch, 4 wave retarders are connect with power splitter, and 8 wave retarders are connected with switch.
In each delay branch, 4 wave retarders are connect with the first two-way amplifier, and the first two-way amplifier and first is
Weighing apparatus connects, and the first balanced device is connect with numerical-control attenuator, and numerical-control attenuator is connect with 4 delayers, 4 delayers and second
Two-way amplifier connects, and the second two-way amplifier is connect with the second balanced device, and the second balanced device is connect with 8 wave retarders, 8 waves
Long delay device is connected with switch.
Wherein, 4 wave retarders are the digitally programmable delayer of 1 400ps, and 8 wave retarders are that the numerical control of 1 800ps is prolonged
When device, the digitally programmable delayer that 4 delayers are 4, stepping is 25ps.
Each transmitting branch includes driving amplifier DPA, middle frequency amplifier MPA and coupler, driving amplifier DPA with
Switch connection, driving amplifier DPA connect with intermediate frequency amplifier MPA, and intermediate frequency amplifier MPA is connect with coupler, coupler and
Circulator connects.
Each receiving branch includes limiter, numerical-control attenuator and low-noise amplifier LNA, and circulator and limiter limit
Width device is connect with numerical-control attenuator, and numerical-control attenuator is connect with low-noise amplifier LNA, and low-noise amplifier LNA connects with switch
It connects.
Circulator is connect with antenna port, the first coupler, the second coupler, third coupler and the 4th coupler difference
It is connect with output port is received.
ZA1, ZA2, ZA3, ZA4 indicate that antenna port, ZS indicate that collection heals up in Fig. 3, and ZR1, ZR2 indicate to receive output end
Mouthful, ZC1, ZC2 indicate coupler output port.
In order to meet the needs of transmission power self-test, each transmitting branch also has power-sensing circuit and voltage amplification electricity
Road, power-sensing circuit are made of detector diode and some capacitance resistance wares, voltage amplifier circuit by in-phase proportion amplifier and
Some capacitance resistance wares form, in order to which the supply voltage of amplifier can be reached after so that the detecting circuit of power-sensing circuit is amplified, fortune
It calculates amplifier and uses rail-to-rail (rail-to-rail) in-phase proportion operational amplifier.
In each transmitting branch, power-sensing circuit is connect with the output end of the coupler in transmitting branch, power detection
The output end of circuit is connect with rail-to-rail in-phase proportion operational amplifier, the output end of rail-to-rail in-phase proportion operational amplifier with
Programmable logic device connection in control module, rail-to-rail in-phase proportion operational amplifier export comparison voltage.
As shown in figure 4, the detecting circuit of power-sensing circuit output inputs rail-to-rail in-phase proportion operational amplifier U1, rail
After being compared power-level detector with comparative level to rail in-phase proportion operational amplifier, exports comparison result and be sent to and can compile
Journey logical device.
It should be noted that control module, power module, power detection electricity in digital control type adjustable microwave delayer
The particular circuit configurations on road are the state of the art, and which is not described herein again.
Referring to FIG. 5, prolonging it illustrates digital control type adjustable microwave delayer provided by one embodiment of the present invention
When test method flow chart.Before carrying out delay test, 2 test ports of vector network analyzer are first calibrated to 0,
The test port of the antenna port of digital control type adjustable microwave delayer and vector network analyzer is connected again.
Vector network analyzer can carry out the phase information of radiofrequency signal, gain information after receiving radiofrequency signal
Processing.As shown in Figure 6：
When the use of unwrapped phase being measuring unit, the characteristics of due to phase discriminator, 360 ° of phase offset whole
Several times can not be identified that first frequency point that vector network analyzer is tested will always by the phase discriminator in vector network analyzer
Between -180 ° to+180 °, and the offset of information of the actual phase offset also containing 360 ° of integral multiple, i.e. actual phase=
+ 360 ° of phase offset × n in vector network analyzer test data, n indicate that actual phase offset is converted to vector network point
The overturning number of phase offset in analyzer test data.
When the use of phase being measuring unit, due to vector network analyzer self-characteristic, the accumulated phase of follow-up frequency point
Offset is embodied in the corresponding line chart of detection data, i.e. sawtooth in -180 ° to+180 ° of number of skips namely line chart
Number.
As shown in figure 5, the time-delay test method of the digital control type adjustable microwave delayer may comprise steps of：
Step 501, digital control type adjustable microwave delayer emits radiofrequency signal.
Radiofrequency signal is prolonged on the basis of the ground state of Numerical Control type micro-wave delayer by stepping of predetermined time interval
When.
Due to the characteristic of vector network analyzer, first frequency point of test will be between -180 ° to 180 ° always；By
It is 8-12GHz in the normal work frequency band of digital control type adjustable microwave delayer, is limited to digital control type adjustable microwave and prolongs
When device inside used in microwave amplifier chip, can not using 10MHz be initial starting point measurement, can only be surveyed by starting point of 8GHz
Amount.
Optionally, it is stepping into line delay using 25ps.Delay 25ps, which is equivalent to the phase at 8GHz, reduces by 72 °, Bu Huizao
At secondary overturning.
Step 502, radiofrequency signal is received by vector network analyzer, obtains detection data.
Detection data is the correspondence of frequency and phase.
Step 503, according to the measuring unit of detection data and vector network analyzer, determine radiofrequency signal in i-th of frequency
The overturning number of point.
Measuring unit includes unwrapped phase and phase.
Step 504, determine that radiofrequency signal is deviated in the actual phase of i-th of frequency point according to overturning number.
I-th of frequency point is any one frequency point in detection data.
Step 505, according to the correspondence of actual phase offset and delay time, delay time is determined.
Foundation actual phase deviates the correspondence with delay time, determines the corresponding delay time of i-th of frequency point.
Step 506, the delay of digital control type adjustable microwave delayer is determined according to delay time and predetermined time interval
Precision.
Shown in sum up, the time-delay test method of digital control type adjustable microwave delayer provided in an embodiment of the present invention is led to
Digital control type adjustable microwave delayer transmitting radiofrequency signal is crossed, vector network analyzer receives radiofrequency signal, obtains testing number
According to, according to the measuring unit of detection data and vector network analyzer, determine overturning number, it is secondary according to measuring unit and overturning
Number determines actual phase offset of the radiofrequency signal in i-th of frequency point；When according to the offset of the actual phase of i-th of frequency point with delay
Between correspondence, determine delay time；Determine that digital control type adjustable microwave prolongs with predetermined time interval according to delay time
When device delay precision；Directly test delay is substituted with phase offset, solves and is delayed now to digital control type adjustable microwave
The low problem of the delay test precision of device；Reach and can have been surveyed for 1% vector network analyzer using delay test precision
The effect for trying the delay precision of digital adjustable microwave delayer, reduces in delay test to the high-precision of vector network analysis
Degree demand.
When measuring unit is phase, the flow chart of the time-delay test method of the digital control type adjustable microwave delayer
As shown in Figure 7.
Step 701, digital control type adjustable microwave delayer emits radiofrequency signal.
The step is expounded in step 501, and which is not described herein again.
Step 702, radiofrequency signal is received by vector network analyzer, obtains detection data.
The step is expounded in 502, and which is not described herein again.
Step 703, determine radiofrequency signal in i-th frequency point according to the sawtooth number in the corresponding line chart of test data
Turn down number.
Sawtooth number is equal to fold number.
Sawtooth number is integer.
By taking Fig. 6 as an example, at a-th of frequency point, the number of sawtooth is 1, i.e., the fold number of i-th frequency point is 1 time.
Step 704, determine that radiofrequency signal is deviated in the actual phase of i-th of frequency point according to overturning number.
Obtain the corresponding phase offset of i-th of frequency point in detection data.
According to formula Yi=Xi+ n × 360 determines the actual phase offset of i-th of frequency point.
Wherein, YiFor the actual phase offset of i-th of frequency point, XiIt is inclined for the corresponding phase of i-th of frequency point in detection data
It moves, n is overturning number.
Step 705, according to the correspondence of actual phase offset and delay time, delay time is determined.
Actual phase is deviated can use formula with the correspondence of delay timeIt indicates；
Wherein, p is that the actual phase of radiofrequency signal deviates, and G is frequency, and n is overturning number, and d is the delay of radiofrequency signal
Time.
According to the correspondence of actual phase offset and delay time, determine that the actual phase offset of i-th of frequency point corresponds to
Delay time.
Step 706, the delay of digital control type adjustable microwave delayer is determined according to delay time and predetermined time interval
Precision.
Digital control type adjustable microwave delayer is determined according to the corresponding delay time of i-th of frequency point and predetermined time interval
Delay precision.
When measuring unit is unwrapped phase, the delay test side of the digital control type adjustable microwave delayer
The flow chart of method is as shown in Figure 8.
Step 801, digital control type adjustable microwave delayer emits radiofrequency signal.
The step is expounded in step 501, and which is not described herein again.
Step 802, radiofrequency signal is received by vector network analyzer, obtains detection data.
The step is expounded in 502, and which is not described herein again.
Step 803, the phase offset of any two frequency point is obtained according to detection data.
Step 804, overturning number is determined according to formula one and formula two.
PG=360 × n+p' × G formula two；
Wherein, p is that the actual phase of radiofrequency signal deviates, and p ' is the phase offset in detection data, and G is frequency, and n is to turn over
Turn number, d is the delay time of radiofrequency signal.
Assuming that obtaining the phase offset p5 ' of the phase offset p3 ' and the 5th frequency point of the 3rd frequency point from detection data；
It can be obtained according to formula one,It willIt brings formula two into, can obtain Due to any two frequency point pair
The time delay answered is equal, i.e. d3=d5, therefore the value that can obtain overturning frequency n to n roundings, that is, takes when n is not integer
Integer before decimal point.
Multigroup different frequent points can be chosen simultaneously to calculate n values, to verify the correctness of n values.
Step 805, determine that radiofrequency signal is deviated in the actual phase of i-th of frequency point according to overturning number.
Obtain the corresponding phase offset of i-th of frequency point in detection data.
According to formula Yi=Xi+ n × 360 determines the actual phase offset of i-th of frequency point.
Wherein, YiFor the actual phase offset of i-th of frequency point, XiIt is inclined for the corresponding phase of i-th of frequency point in detection data
It moves, n is overturning number.
Step 806, according to the correspondence of actual phase offset and delay time, delay time is determined；
Actual phase is deviated can use formula with the correspondence of delay timeIt indicates；
Wherein, p is that the actual phase of radiofrequency signal deviates, and G is frequency, and n is overturning number, and d is the delay of radiofrequency signal
Time.
The step is expounded in 705, and which is not described herein again.
Step 807, the delay of digital control type adjustable microwave delayer is determined according to delay time and predetermined time interval
Precision.
The step is expounded in 706, and which is not described herein again.
It should be noted that：The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of digital control type adjustable microwave delayer, which is characterized in that including outer cover plate, inner cover plate, pcb board, power supply board
And box body；
The both sides of the box body are provided with connector, and the power supply board, the pcb board, the inner cover plate are set successively from top to bottom
It sets in the box body, the outer cover plate is arranged at the top of the box body；
Control module and power module are provided on the power supply board, the pcb board is provided with radio-frequency module, the control module
It is connect with the radio-frequency module, the power module is separately connected with the control module, the radio-frequency module；
Power module includes voltage-stablizer, capacitance resistance component；
The control module includes programmable logic device, digital time delayer, driver, diode and triode；
The radio-frequency module includes that power division network, delay branch, transmitting branch and receiving branch, the power division network prolong with described
Shi Zhilu connections, the delay branch are separately connected with the transmitting branch, the receiving branch；
The power division network includes that 2 couplers and 5 power splitters, the first coupler are connect with the first power splitter, the first work(point
Device is connect with the second power splitter, third power splitter, and third power splitter is connect with the 4th power splitter, the 4th power splitter and the 5th work(point
Device, the connection of the second coupler；
Each delay branch includes 4 wave retarders, two-way amplifier, balanced device, numerical-control attenuator, 4 delayers and 8
Wave retarder, 8 wave retarder are connected with switch；
Each transmitting branch includes driving amplifier, intermediate power amplifier and coupler, the driving amplifier and the switch
Connection, the switch are connect with 8 wave retarders in the delay branch, and the coupler is connect with the circulator；
Each receiving branch includes limiter, numerical-control attenuator, low-noise amplifier, the low-noise amplifier and the switch
Connection, the switch are connect with 8 wave retarders in the delay branch, and the limiter is connect with the circulator；
The circulator is connect with antenna port, first coupler, second coupler, the third coupler and institute
The 4th coupler is stated to connect with reception output port respectively.
2. digital control type adjustable microwave delayer according to claim 1, which is characterized in that in each transmitting branch,
The coupler is connect with power-sensing circuit, the output end of the power-sensing circuit and rail-to-rail in-phase proportion operation amplifier
Device connects, and output end and the programmable logic device in the control module of the rail-to-rail in-phase proportion operational amplifier connect
It connects.
3. digital control type adjustable microwave delayer according to claim 1, which is characterized in that the radio-frequency module includes
4 delay branches, the first 4 wave retarders being delayed in branch and the second delay branch connect with second power splitter respectively
It connects, 4 wave retarders in third delay branch and the 4th delay branch are connect with the 5th power splitter respectively；
In each delay branch, 4 wave retarders, the first two-way amplifier, the first balanced device, numerical-control attenuator, 4 delays
Device, the second two-way amplifier, the second balanced device, 8 wave retarders are sequentially connected.
4. a kind of time-delay test method of digital control type adjustable microwave delayer, which is characterized in that the digital control type can
It is the digital control type adjustable microwave delayer as described in claims 1 to 3 is any, the digital control type to adjust microwave delayer
Adjustable microwave delayer is connect with vector network analyzer, the method includes：
The digital control type adjustable microwave delayer emits radiofrequency signal, and the radiofrequency signal is adjustable with the digital control type
It is stepping into line delay using predetermined time interval on the basis of the ground state of microwave delayer；
Receive the radiofrequency signal by the vector network analyzer, obtain detection data, the detection data be frequency and
The correspondence of phase；
According to the measuring unit of the detection data and the vector network analyzer, determine the radiofrequency signal in i-th of frequency
The overturning number of point, the measuring unit includes unwrapped phase and phase；
Actual phase offset of the radiofrequency signal in i-th of frequency point is determined according to the overturning number；
According to the correspondence of actual phase offset and delay time, delay time is determined；
The delay of the digital control type adjustable microwave delayer is determined according to the delay time and the predetermined time interval
Precision.
5. time-delay test method according to claim 4, which is characterized in that described when the measuring unit is phase
According to the measuring unit of institute's detection data and the vector network analyzer, determine the radiofrequency signal in i-th frequency point
Number is overturn, including：
Determine that the fold number, the sawtooth number are equal to described according to the sawtooth number in the corresponding line chart of test data
Turn down number.
6. time-delay test method according to claim 4, which is characterized in that when the measuring unit is unwrapped
When phase, the measuring unit according to institute's detection data and the vector network analyzer determines that the digital control type can
The overturning number of microwave delayer is adjusted, including：
The phase offset of any two frequency point is obtained according to the detection data；
The overturning number is determined according to following formula one and formula two；
PG=360 × n+p' × G formula two；
Wherein, p is that the actual phase of radiofrequency signal deviates, and p ' is the phase offset in the detection data, and G is frequency, and n is to turn over
Turn number, d is the delay time of radiofrequency signal.
7. time-delay test method according to claim 4, which is characterized in that described according to the measuring unit and described to turn over
Turn number, determines actual phase offset of the radiofrequency signal in i-th of frequency point, including：
Obtain the corresponding phase offset of i-th of frequency point in the detection data；
The actual phase offset of i-th of frequency point is determined according to formula three；
Yi=XiThe formula of+n × 360 three；
Wherein, YiFor the actual phase offset of i-th of frequency point, XiIt is for the corresponding phase offset of i-th of frequency point, n in detection data
Overturn number.
8. time-delay test method according to claim 4, which is characterized in that it is described according to actual phase deviate be delayed when
Between correspondence, determine delay time, including：
According to actual phase offset and formula one, the delay time is determined；
Wherein, the p is that the actual phase of radiofrequency signal deviates, and G is frequency, and n is overturning number, and d is the delay of radiofrequency signal
Time.
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