CN109412621A - A kind of four-way independence fixed ampllitude formula local oscillator function separating device and method - Google Patents
A kind of four-way independence fixed ampllitude formula local oscillator function separating device and method Download PDFInfo
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Abstract
The invention discloses a kind of four-way independence fixed ampllitude formula local oscillator function separating device and methods, belong to microwave testing field, apparatus of the present invention include that local oscillator cascades expanding element, level-one function divides amplifying unit, second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function divide/amplifying unit B.The method of the present invention can complete function point/amplification/fixed ampllitude function after internal local oscillator source signal generates, and it can finally be provided to 4 road local oscillation signal necessary to vector network analyzer receiver, each output branch has the function of independent broadband fixed ampllitude, the isolation performance between the power stability of local oscillation signal, amplitude power adjustable extent, local oscillation channel is improved, and makes between vector network analyzer there is direct receiver to cascade extended capability；The performance of vector network analyzer local oscillation circuit is improved, meets high stability and High-precision Vector Network Analyzer technological innovation requirement to the maximum extent in a manner of unitized, there is versatility.
Description
Technical field
The invention belongs to microwave testing fields, and in particular to a kind of four-way independence fixed ampllitude formula local oscillator function separating device and
Method.
Background technique
With information technology fast development, microwave component, device component, the performance indicator of equipment are higher and higher, to test hand
The requirement of section also increasingly refines, and proposes higher want to the performance of the vector network analyzer as microwave test core instrument
It asks, especially the indexs such as the measuring accuracy of complete machine, stability, dynamic range and complete machine Function Extension ability etc. is proposed
Higher technical requirements.
Vector network analyzer is the core test equipment of microwave and millimeter wave testing field, and application is small to arrive semiconductor core
Piece, arrives greatly large scale equipment component, and basic function is that the frequency sweep S parameter test of measured piece is completed in broadband.It is surveyed as precision
Test instrument requires very high, and receiver to the stability and precision of the multichannel receiver (based on general four-way) of itself
Local oscillation signal presentation mode directly affect the index and stability of multichannel receiver again.By being connect to multichannel (mixing)
It is a kind of effective means for promoting vector network analyzer receiver performance that the local oscillation channel of receipts machine, which is designed and improves,.
There are two types of the implementation methods of vector network analyzer receiver local oscillation channel traditional mode.A kind of method is to local oscillator
Source signal only amplifies, and then directly passes through four tunnels that function subchannel is respectively supplied to vector network analyzer without fixed ampllitude
(down coversion) receiver；Another method is that the signal that local vibration source generates first passes through after amplification and fixed fixed ampllitude that function is divided into four again
Road is supplied directly to four tunnels (or multichannel) receiver (low-converter) by 1-4 function subchannel.In short, traditional technology is all this
Vibration signal first amplifies after (fixed ampllitude or non-fixed ampllitude) direct function point again, and function subchannel frequency response does not have power compensation.But function point
Every road local oscillation signal does not carry out the power compensation processing of independent fine fixed ampllitude mode again later.
According to the analysis of practical application, the local vibration source function subchannel of vector network analyzer traditional mode exists as follows not
Foot:
1, a kind of traditional implementation is that local oscillator source signal is amplified to bigger power (such as+27~+30dBm) afterwards directly
It connected function and is divided into four mixing receivers that four tunnels are respectively supplied to complete machine.It the use of the shortcomings which is receiver local oscillator function
Rate amplifier does not pass through controlling of amplitude, so that the local oscillation signal stability of final output is poor, watt level is inconvenient to be adjusted
Whole and calibration；Second is that power-devided circuit loss value is big (theoretical loss just has 12dB), excessive power is consumed；
2, it is that local oscillator source signal first passes through after amplification and fixed fixed ampllitude that function is divided into four tunnels again that another kind, which is traditional mode, respectively
Four tunnels (or multichannel) receiver mixer is supplied to by four road function subchannels.This kind of mode compares first way, using putting
The first fixed ampllitude mode that function divides again after big, although local oscillation signal power stability is improved, but the function subchannel on subsequent one point of four tunnel
Comprising components such as the corresponding semi-rigid cables of 1/2 power splitter of two-stage and four tunnels, the characteristics such as Insertion Loss standing wave all can be variant, thus
End output local oscillation power essence is still not exclusively controlled.Adjustability, stability and the channel of local oscillator output power
Consistency relies only on hardware performance and changes, and can not need subtly to be independently arranged every road sheet according to multichannel receiver
The size of vibration, and influenced by complete machine interior environment temperature；In addition, power-devided circuit theoretical loss value is big (12dB), consumed
More power.
These disadvantages of traditional local oscillation channel can all influence multichannel receiver local oscillation signal power stability and accuracy；No
It is suitble to the Innovation Demand of a new generation's high-precision, high stability instrument.
3, the shortcomings that both traditional modes are in terms of channel separation: isolation depends on net work between function subchannel
Divide the isolation performance of device circuit, less barrier property be easy to cause between receiver and forms radio frequency cross talk by local oscillation channel.
4, vector network analyzer technology trends require using internal receipt machine further realize absolute power and
Spectrum measurement, thus more high-stability requirement is proposed to local oscillation channel signal, therefore, traditional local oscillation channel implementation method cannot expire
Sufficient technology develops the demand new to vector network analyzer receiver stability；
5, local oscillation channel is closing rather than opens under current method or mode, is not able to satisfy different vector network analysis
Facilitate the realization cascade function of local oscillator altogether between the receiver of instrument.Therefore, conventional method is not able to satisfy vector network analyzer and connects
Receipts machine is based on the extension test application under phase coherent signal system.
Summary of the invention
Aiming at the defects existing in the prior art, the invention proposes a kind of four-way independence fixed ampllitude formula local oscillators
Function separating device and method, design rationally, overcome the deficiencies in the prior art, have good effect.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of four-way independence fixed ampllitude formula local oscillator function separating device, including local oscillator cascade expanding element, level-one function point amplification list
First, second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit B；
Local oscillator cascades expanding element, including the first coupler and third amplifier, operating frequency range be 1GHz~
40GHz, on the one hand, export the local oscillation signal that local vibration source generates to the level-one function point of next stage by the main road of the first coupler
Amplifying unit；On the other hand, the local oscillation signal all the way coupling port of the first coupler being coupled out amplifies through third amplifier
It exports to other vector network analyzer local oscillators input port by cascade extension output port as cascade local oscillator input signals；
First coupler, be configurable for being coupled out by its coupling port all the way local oscillation signal as cascade signal,
And it exports to third amplifier；
Third amplifier is configurable for amplifying the local oscillation signal that the first coupler is coupled out, thermal compensation signal
Coupling loss, realize multiple groups vector network analyzer receiver local oscillator cascade or outer output function；
Level-one function divides amplifying unit, amplifies including the first amplifier and second in level-one power-devided circuit and function branch path
Device；It is configurable for completing the first time function point of input local oscillation signal, the local oscillation signal of input is passed through into level-one power-devided circuit
Function is divided into two-way, and is distinguished by the first amplifier and the second amplifier the local oscillation signal after function point in each function branch path
After amplifying compensation, output to second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function divide/is put side by side
Big unit B；
Second level end fixed ampllitude formula function point/amplifying unit A, structure and function and second level end fixed ampllitude formula function divide/amplification list
First B is the same, includes second level power-devided circuit, power modulators, broadband dual amplifier group, output end coupling detecting circuit and fixed ampllitude
Control circuit；It is configurable for completing secondary function point, amplification and the fixed ampllitude function of local oscillation signal, and exports final local oscillator letter
Number, final local oscillation signal output of the two-way by conditioning is provided for vector network analyzer four-way receiver；
Second level power-devided circuit is configurable for the every road local oscillation signal for dividing level-one function amplifying unit to export function point again
For two-way；
Power modulators are configurable for carrying out algorithm for power modulation, root to the signal after second level power-devided circuit function point
Power attenuation is carried out according to control voltage；
Broadband dual amplifier group is configurable for putting the signal progress gain after power modulators algorithm for power modulation
Greatly；
Output end couples detecting circuit, is configurable for being sampled output signal level and detecting, and export inspection
Wave signal is to controlling of amplitude circuit；
Controlling of amplitude circuit, is configurable for rectified signal and the reference signal from data line is compared integral
Processing, forms error-driven signal, and driving power modulator changes attenuation, plays the work of adjust automatically input power size
With until final output power reaches the setting performance number requirement of requirement.
Preferably, level-one power-devided circuit and second level power-devided circuit are one-to-two power-devided circuit.
In addition, the present invention is also mentioned that a kind of four-way independence fixed ampllitude formula local oscillator function point method, this method is using as described above
A kind of four-way independence fixed ampllitude formula local oscillator function separating device, include the following steps:
Step 1: the vibration signal that local vibration source generates this is input to local oscillator cascade expanding element；
Step 2: local oscillator cascades expanding element, on the one hand, the local oscillation signal for generating local vibration source passes through the first coupler
Main road, which is exported to the level-one function of next stage, divides amplifying unit；On the other hand, one coupling port of the first coupler is coupled out
Road local oscillation signal is exported through cascade extension output port to other vector network analyzer local oscillators after the amplification of third amplifier
Input port is as input；
Step 3: level-one function divides amplifying unit that the local oscillation signal of local oscillator cascade expanding element output is passed through level-one function point electricity
Road is divided into two-way, and is distinguished by the first amplifier and the second amplifier the local oscillation signal after function point in each function branch path
After amplifying compensation, output to second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function divide/is put side by side
Big unit B；
Step 4: second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit B passes through
Second level power-devided circuit, power modulators, broadband dual amplifier group, output end coupling detecting circuit and controlling of amplitude circuit, are completed
The secondary function of local oscillation signal point, amplification and fixed ampllitude function, and final local oscillation signal is exported, second level end fixed ampllitude formula function divide/is put
Big unit A and second level end fixed ampllitude formula function point/amplifying unit B provides totally four Lu Jing for vector network analyzer four-way receiver
Cross the final local oscillation signal output of conditioning.
Advantageous effects brought by the present invention:
1, apparatus of the present invention make the inside local oscillation signal of vector network analyzer be divided into 4 by 1 road function after power-devided circuit
Road, final four output branches all have power fixed amplitude circuit, it is thus possible to provide 4 tunnels for 4 receivers and have independent fixed ampllitude
The local oscillation signal of ability；Relative to conventional method, the auto_steady amplitude ability of each branch output signal after function point is realized, and
Each branch can be independently arranged and adjust fixed ampllitude performance number according to the characteristic of corresponding receiver.Avoid each function in conventional method
Branch path output signal power accuracy due to caused by the property differences such as path circuitry device, size, environment temperature difference but nothing
The defect of method progress independent power compensation.First is that greatly improving the stability of local oscillator output signal, power accuracy is improved；Two
Tetra- tunnel local oscillator of Shi Shi has flexible power setting ability, can be only according to the concrete property difference of corresponding rear class receiver
It erects and sets local oscillator size；Third is that each local oscillation channel can be made to be obviously improved improvement consistency.This is all that conventional method cannot achieve.
2, apparatus of the present invention totally use the combination of two-stage/tri- group function sub-unit, function branch path to place amplifier and carry out signal
The overall architecture and mode of amplification compensate for function and access are divided to cause to be lost, thus may be implemented broadband (1GHz~40GHz),
The big local oscillation signal of output power (upper limit of the power can be greater than 20dBm), the whole range of power adjustable (can be achieved from -10~+
20dBm)；Opposite currently available technology, effectively increases the local oscillator output signal power upper limit, and it is adjustable to increase local oscillation power
Range；
3, the introducing of the amplifier of function branch path, (compared with the existing technology) increase between local oscillator function subchannel it is reversed every
From performance, the radio frequency cross talk formed between receiver by local oscillation channel is greatly reduced；
4, the technology trends of vector network analyzer require to realize absolute power and spectrum measurement ability, using this hair
The method of bright offer provides local oscillator for receiver, can be further improved receiver stability, thus opposite conventional method is stablized
Property is stronger；
5, the cascade expansion interface that this vibration level expanding element in apparatus of the present invention has makes complete machine have multiple groups vector
The receiver local oscillator of Network Analyzer cascades ability, and due to using same local vibration source after cascade, the receiver after making cascade
Group has fully synchronized phase coherent characteristics；On the other hand, after local oscillator cascade expanding element interface is using directional couple output
Amplify the mode of compensation again, it can be achieved that cascade port signal power and input power be totally consistent, compensate for power damage
Consumption to realize multi-stage cascade, and and cascade part keep high isolation, reduce and influence each other.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Fig. 2 is position view of the apparatus of the present invention in vector network analyzer analyzer functional block diagram.
Fig. 3 is that the more vector network analyzer analyzer receiver local oscillators that the present invention has extend functional schematic.
Specific embodiment
With reference to the accompanying drawing and specific embodiment invention is further described in detail:
The present invention provides a kind of suitable for the four-way independence fixed ampllitude formula local oscillator function separating device of vector network analyzer and side
Method, function are to complete function point/amplification/fixed ampllitude function after internal local oscillator source signal generates, and can finally be provided to vector network
4 road local oscillation signals necessary to analyzer receiver (low-converter) (are denoted as LO herein1、LO2、LO3、LO4).Each output branch
Have the function of independent broadband fixed ampllitude, can be realized the end fixed ampllitude of output signal, to improve the power stability of local oscillation signal
Property, the isolation performance between power adjustable range, local oscillation channel, and make between vector network analyzer have direct receiver cascade
Extended capability.The present invention can effectively solve shortcoming existing for conventional method, promote vector network analyzer local oscillation circuit
Performance meets high stability and High-precision Vector Network Analyzer technological innovation requirement to the maximum extent in a manner of unitized.
This method and device have versatility, it can also be used in the local oscillation channel design of other type multichannel receivers.
A kind of four-way independence fixed ampllitude formula local oscillator function separating device of the present invention, structure is as shown in Figure 1, include that local oscillator cascade is expanded
Exhibition unit, level-one function divide amplifying unit, second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/to amplify
Four big unit of unit B, for completing 1-4 Lu Gongfen of vector network analyzer local oscillation signal, amplifying and realizing that 4 tunnels are finally defeated
The fixed ampllitude function of signal out, for the four circuit receiver of vector network analyzer, to provide broadband (1GHz~40GHz), full frequency band defeated
Upper limit of the power height, power adjustable range big (> 30dB), every branch have independent power allocative abilities, end fixed ampllitude sheet out
Shake signal.The present invention provides more stable local oscillation signal for receiver from the angle that innovation, optimization local oscillation channel design, thus
Promote the indexs such as receiver stability, sensitivity and the passage consistency of vector network analyzer.Can be achieved from 1GHz~
The local oscillation signal function of 40GHz range divides conditioning functions, has versatility.
The local oscillator cascades expanding element: being made of wideband directional coupling circuit and amplifier, operating frequency range 1GHz
~40GHz.First is that the local oscillator input signals that local vibration source generates is used to be transmitted to next stage by the main road of the first coupler
Level-one function divides amplifying unit, to play the role of local oscillation signal input interface；On the other hand, from the coupled end of the first coupler
Mouth is coupled out local oscillation signal all the way and is amplified by amplifier 3, through cascade ECP Extended Capabilities Port output.The port can be exported
Signal is sent to other vector network analyzer local oscillator input port as input, and amplifier 3 is used to the coupling loss of thermal compensation signal,
The cascade of receiver local oscillator or outer output function of multiple groups vector network analyzer can be achieved；
The level-one function is divided to amplifying unit: by two wideband microwave amplifiers 1 in level-one power-devided circuit and function branch path
It is constituted with amplifier 2.The local oscillation signal function of input, is divided into two-way by the main first time function point for completing input local oscillation signal, and
Signal after function point is amplified respectively using amplifier (amplifier 1 and amplifier 2) on each function subchannel；
The second level end fixed ampllitude formula function point/amplifying unit A: by second level power-devided circuit (one-to-two), power modulators, width
Band dual amplifier group, output end coupling detecting circuit, controlling of amplitude circuit composition.The unit mainly completes the secondary of local oscillation signal
Function point, amplification, fixed ampllitude function, and final local oscillation signal is exported, two-way is provided for vector network analyzer four-way receiver
Final local oscillation signal output by conditioning: LO1 and LO2；
The second level end fixed ampllitude formula function point/amplifying unit B: and second level end fixed ampllitude formula function point/amplifying unit A function
It is similar, provide two-way the final local oscillation signal output by conditioning for vector network analyzer four-way receiver: LO3 and
LO4；
Main operational principle of the present invention are as follows:
Expanding element is cascaded in local oscillator:
Main road and coupling branch through overcoupling device 1 after the local oscillation signal that local oscillation signal generator generates is entered by input port
Road is divided into two parts of signals.In terms of main road, the local oscillation signal of input mainly enters after the main road of directional coupler next
Functional unit: level-one function divides amplifying unit.Wide-band coupler main road Insertion Loss is smaller, to the signal attenuation loss very little of process；
In coupling branch, signal all the way is coupled out by directional coupler coupling arm and is put as cascade signal through wide-band microwave
Big device 1 exports after amplifying, which is the outer output signal of instrument, for being supplied to other vector network analyzers, as outer
Local oscillator input signals are connect, are cascaded to realize with the receiver of other vector network analyzers.Due to using a local vibration source, because
And can realize the true synchronization of different vector network analyzer receivers, realize that multi channel signals coherence receives measurement function,
And it can be multiplexed and realize multichannel cascade；Amplifier 3, which compensates the coupling loss of signal, (selects suitable amplifier to amplify
Multiple, then the power of compensated rear cascade output port is unattenuated conducive to multi-stage cascade so still close to input power).
In addition coupler 1 has good directionality, and amplifier reverse isolation degree is also bigger, and therefore, this design can have good
Good overall isolation performance makes to be cascaded the normal work that exterior section avoids interference the machine.
Divide amplifying unit in level-one function:
The local oscillation signal of prime input, which enters after this unit, is divided into two-way by 1 point 2 of level-one power-devided circuit first, then divides
Compensation is not amplified by the amplifier of each branch (amplifier 1 and amplifier 2)；On the other hand, due to two branch of this unit
Road is respectively equipped with broad band amplifier, to increase reverse isolation performance.
The two-way local oscillation signal for completing function point amplification through this unit is input to next stage unit side by side respectively: second level end is steady
Width formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit B.
Fixed ampllitude formula function point/amplifying unit A in second level end:
The local oscillation signal inputted by prime unit initially enters second level power-devided circuit in this unit, is divided into two by function again
A branch；In each branch, local oscillation signal enters back into broadband dual amplifier group after power modulators and carries out plus and blowup, from
And big output power and big power adjustment (the voltage-controlled attenuation > 30dB of modulator) may be implemented, amplified local oscillator
Signal completes final output (LO1 and LO2) through subsequent output end coupling detecting circuit.Detecting circuit is coupled by coupling and detection
Device circuit is constituted, and coupling detecting way circuit Insertion Loss is smaller, has the advantages that reduce power loss.Final output signal (LO1 and
LO2) it is local oscillation signal by fixed ampllitude.Local oscillation signal power fixed ampllitude function specific work process are as follows:
1) the preparatory calibration of power: power meter is connected in output end, the local oscillator of receiver is corresponded to according to vector network analyzer
It is required that carry out the calibration of full frequency band local oscillator, and using calibration data there are in vector network analyzer system file as power fixed ampllitude
Reference, it correspond to each frequency point signal level of local oscillator fixed ampllitude requirement；The data line and A/D circuit of controlling of amplitude circuit be
Entire local oscillation device carries out calibration and provides required hardware interface；
2) when entire fixed ampllitude loop work, detecting circuit completes the sampling of output signal level at the final output end of signal
And detection, rectified signal travel further into controlling of amplitude circuit；In controlling of amplitude circuit, rectified signal and from data line
Above-mentioned reference signal is compared Integral Processing, and the error-driven signal of formation changes to driving power modulator linearity in turn
Attenuation plays the role of automatic fine adjustment input power, until the setting performance number that local oscillator output power reaches requirement is wanted
It asks.
The second level end fixed ampllitude formula function point/amplifying unit B:
Its composition is identical with working principle, is finally completed the function point of other two-way local oscillation signal output (LO3 and LO4), puts
Greatly, fixed ampllitude and final output.
Apparatus of the present invention are shown in schematic diagram 2 in position in vector network analyzer analyzer functional block diagram.
The key technology point of beneficial effect is brought to the present invention
1, it is proposed by the present invention by local oscillator cascade expanding element, level-one function divide amplifying unit, second level end fixed ampllitude formula function point/
A kind of four-way independence fixed ampllitude formula local oscillator function that amplifying unit A, second level end fixed ampllitude formula function point/amplifying unit B Unit tetra- are constituted
Separating device and method, it is overall that amplifier progress signal is independently arranged using the combination of two-stage/tri- group function sub-unit, each function branch path
The overall architecture and local oscillation channel design method of amplification, the 1-4 function that can integrate completion vector network analyzer local oscillation signal divide, are every
Road function branch path local oscillation signal independence enlarging function.The advantages of invention, which is mainly reflected in, can provide the stability of local oscillation signal and obtains
Greatly improve, more preferable, the power of consistent performance adjustment between local oscillation channel are more met the requirements, the interference between local oscillation channel is into one
Step is inhibited and is capable of providing local oscillator cascade extension function.
2, the present invention proposes local oscillator four-way end independence fixed ampllitude designing technique.Fixed ampllitude formula function in second level end in the present invention
Point/amplifying unit A, second level end fixed ampllitude formula function point/amplifying unit B, totally four tunnel local oscillators export, and every road is designed with individually controllable
Local oscillator amplifying circuit simultaneously included fixed ampllitude loop, can the down-conversion receiver according to corresponding to rear class every road local oscillation power is wanted
It asks, realizes independent power setting and fixed ampllitude function；Each branch is in final output port using coupling detecting way, detecting circuit
It is made of the directional coupler and wave detector for being placed on final output end, has the advantages that Insertion Loss is small, good directionality, so as to reality
The end fixed ampllitude of the road Xian Mei local oscillator output end can export every road of local oscillation signal realize that full tunnel power is mended automatically in this way
Repay, thus eliminate local oscillation channel difference and caused by power it is uncertain；Since independent fixed ampllitude is all realized on every road, thus greatly
The local oscillation signal stability of vector network analyzer analyzer is enhanced, power accuracy and passage consistency are improved.To protect
The stability of complete machine receiver has been demonstrate,proved, high-precision and high-stability vector network analyzer design needs of new generation can be met；
3, the invention proposes the channel-equalization formula local oscillator function for vector network analyzer to divide amplifying circuit comprehensive design
Method.Level-one function in the present invention divides amplifying unit, second level end fixed ampllitude formula function to divide/amplifying unit A, second level end fixed ampllitude formula function
Point/amplifying unit B in, microwave amplifier or dual amplifier group, this design side are placed on access all after every grade of power-devided circuit
Method compensates for power loss caused by power-devided circuit, and high local oscillation signal power can be provided for vector network analyzer receiver
The upper limit；Frame design makes channel overall circuit design have good balanced and symmetry, is conducive to improve passage consistency；
It is all being inputted in second level end fixed ampllitude formula function point/amplifying unit A, second level end fixed ampllitude formula function point/amplifying unit B
End place power modulators (broadband, big attenuation), it can be achieved that local oscillator output power adjustable extent；
4, branch of the present invention place amplifier can be provided for the four circuit receiver of vector network analyzer broadband 1GHz~
The local oscillation signal of 40GHz, output power, the use of amplifying circuit further reduce signal of the receiver by local oscillation channel
Crosstalk increases the isolation performance between receiver channel；
5, the local oscillator cascade extension grade method proposed by the present invention based on amplifier circuit, can be easy to implement multiple groups vector
The receiver of Network Analyzer cascades ability, and due to using same local oscillation signal source after cascade, the reception after making cascade
Unit has phase coherent characteristics；On the other hand, local oscillator cascade expanding element interface amplifies benefit after exporting using directional couple again
Multilevel vector is greatly improved, it can be achieved that the signal power and input power of cascade port are totally consistent in the mode repaid in this way
Network Analyzer receiver cascades extended capability, and and the cascade Other Instruments of institute keep high isolation, reduce mutual
It influences.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (3)
1. a kind of four-way independence fixed ampllitude formula local oscillator function separating device, it is characterised in that: cascade expanding element, level-one function including local oscillator
Point amplifying unit, second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit B；
Local oscillator cascades expanding element, including the first coupler and third amplifier, and operating frequency range is 1GHz~40GHz, and one
Aspect exports the local oscillation signal that local vibration source generates to the level-one function point amplification list of next stage by the main road of the first coupler
Member；On the other hand, the local oscillation signal all the way coupling port of the first coupler being coupled out is after the amplification of third amplifier through grade
Connection extension output port is exported to other vector network analyzer local oscillators input port as cascade local oscillator input signals；
It is and defeated as cascade signal to be configurable for being coupled out local oscillation signal all the way by its coupling port for first coupler
Out to third amplifier；
Third amplifier is configurable for amplifying the local oscillation signal that the first coupler is coupled out, the coupling of thermal compensation signal
Loss is closed, realizes the cascade of receiver local oscillator or outer output function of multiple groups vector network analyzer；
Level-one function divides amplifying unit, including the first amplifier and the second amplifier in level-one power-devided circuit and function branch path；Quilt
It is configured for completing the first time function point of input local oscillation signal, the local oscillation signal of input is divided by level-one power-devided circuit function
Two-way, and the local oscillation signal after function point is put respectively by the first amplifier and the second amplifier in each function branch path
After large compensation, output to second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit side by side
B；
Second level end fixed ampllitude formula function point/amplifying unit A, structure and function and second level end fixed ampllitude formula function divide/amplifying unit B mono-
Sample includes second level power-devided circuit, power modulators, broadband dual amplifier group, output end coupling detecting circuit and controlling of amplitude
Circuit；It is configurable for completing secondary function point, amplification and the fixed ampllitude function of local oscillation signal, and exports final local oscillation signal,
Final local oscillation signal output of the two-way by conditioning is provided for vector network analyzer four-way receiver；
Second level power-devided circuit, being configurable for the every road local oscillation signal for being divided to level-one function amplifying unit to export, function is divided into two again
Road；
Power modulators are configurable for carrying out algorithm for power modulation to the signal after second level power-devided circuit function point, according to control
Voltage processed carries out power attenuation；
Broadband dual amplifier group is configurable for carrying out gain amplification to the signal after power modulators algorithm for power modulation；
Output end couples detecting circuit, is configurable for being sampled output signal level and detecting, and exports detection letter
Number to controlling of amplitude circuit；
Controlling of amplitude circuit, is configurable for rectified signal and the reference signal from data line is compared at integral
Reason forms error-driven signal, and driving power modulator changes attenuation, plays the role of adjust automatically input power size,
Until final output power reaches the setting performance number requirement of requirement.
2. four-way independence fixed ampllitude formula local oscillator function separating device according to claim 1, it is characterised in that: level-one power-devided circuit
It is one-to-two power-devided circuit with second level power-devided circuit.
3. a kind of four-way independence fixed ampllitude formula local oscillator function divides method, it is characterised in that: using one kind four as described in claim 1
Channel independence fixed ampllitude formula local oscillator function separating device, includes the following steps:
Step 1: the local oscillation signal that local vibration source generates is input to local oscillator cascade expanding element；
Step 2: local oscillator cascades expanding element, on the one hand, the local oscillation signal for generating local vibration source passes through the main road of the first coupler
It exports to the level-one function of next stage and divides amplifying unit；On the other hand, the sheet all the way coupling port of the first coupler being coupled out
Vibration signal is exported to other vector network analyzer local oscillators through cascade extension output port after the amplification of third amplifier and is inputted
Mouth is as input；
Step 3: level-one function divides amplifying unit that the local oscillation signal of local oscillator cascade expanding element output is passed through level-one power-devided circuit point
For two-way, and the local oscillation signal after function point is carried out respectively by the first amplifier and the second amplifier in each function branch path
After amplification compensation, output to second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplification are single side by side
First B；
Step 4: second level end fixed ampllitude formula function point/amplifying unit A and second level end fixed ampllitude formula function point/amplifying unit B passes through second level
Power-devided circuit, power modulators, broadband dual amplifier group, output end coupling detecting circuit and controlling of amplitude circuit, complete local oscillator
The secondary function of signal point, amplification and fixed ampllitude function, and final local oscillation signal is exported, second level end fixed ampllitude formula function point/amplification is single
First A and second level end fixed ampllitude formula function point/amplifying unit B for vector network analyzer four-way receiver provide totally four tunnels through toning
The final local oscillation signal output of reason.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635782A (en) * | 2019-10-14 | 2019-12-31 | 浙江嘉科电子有限公司 | V-frequency-band miniaturized low-power-consumption high-power digital phase-shifting network |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050271164A1 (en) * | 2004-06-03 | 2005-12-08 | Moulthrop Andrew A | Baseband time-domain communications system |
| CN102768302A (en) * | 2012-07-18 | 2012-11-07 | 北京无线电计量测试研究所 | Double-channel digital phase noise detection device and phase noise detection method |
| CN203287518U (en) * | 2013-04-22 | 2013-11-13 | 湖北三江航天险峰电子信息有限公司 | Frequency-modulated continuous wave transmitting and receiving module |
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| CN106385255A (en) * | 2016-08-17 | 2017-02-08 | 中国电子科技集团公司第四十研究所 | Low-noise high-definition tunable multi-loop frequency synthesizing device and method |
| CN107896116A (en) * | 2016-09-30 | 2018-04-10 | 南京誉葆科技有限公司 | A kind of Data-Link radio system |
-
2018
- 2018-11-19 CN CN201811373416.2A patent/CN109412621B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050271164A1 (en) * | 2004-06-03 | 2005-12-08 | Moulthrop Andrew A | Baseband time-domain communications system |
| CN102768302A (en) * | 2012-07-18 | 2012-11-07 | 北京无线电计量测试研究所 | Double-channel digital phase noise detection device and phase noise detection method |
| CN203287518U (en) * | 2013-04-22 | 2013-11-13 | 湖北三江航天险峰电子信息有限公司 | Frequency-modulated continuous wave transmitting and receiving module |
| CN104168001A (en) * | 2014-05-27 | 2014-11-26 | 北京遥测技术研究所 | Eight-channel gain-controllable down converter |
| CN106385255A (en) * | 2016-08-17 | 2017-02-08 | 中国电子科技集团公司第四十研究所 | Low-noise high-definition tunable multi-loop frequency synthesizing device and method |
| CN107896116A (en) * | 2016-09-30 | 2018-04-10 | 南京誉葆科技有限公司 | A kind of Data-Link radio system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635782A (en) * | 2019-10-14 | 2019-12-31 | 浙江嘉科电子有限公司 | V-frequency-band miniaturized low-power-consumption high-power digital phase-shifting network |
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