CN108051768A - The calibration system and method for a kind of RF instrumentation - Google Patents
The calibration system and method for a kind of RF instrumentation Download PDFInfo
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- CN108051768A CN108051768A CN201711284361.3A CN201711284361A CN108051768A CN 108051768 A CN108051768 A CN 108051768A CN 201711284361 A CN201711284361 A CN 201711284361A CN 108051768 A CN108051768 A CN 108051768A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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Abstract
The invention discloses the calibration system of RF instrumentation, including：Signal provides module, signal distribution module, standard radio frequency instrument and control device；Signal distribution module provides module, standard radio frequency instrument and several RF instrumentations to be measured with signal respectively and is connected；Control device provides module, standard radio frequency instrument and RF instrumentation to be measured with signal respectively and is connected；Wherein：Signal provides module under control of the control means, sends test signal；Test signal is multi-channel test signal by the output of multiple output ports by signal distribution module；Wherein an output port is connected with standard radio frequency instrument, and remaining output port connects one to one respectively with several RF instrumentations to be measured；Control device control signal provides module and sends test signal, and according to the standard radio frequency instrument of reception and the test data of several RF instrumentations to be measured, each RF instrumentation to be measured is calibrated.The present invention realizes the batch calibration of RF instrumentation, improves calibration efficiency, reduces cost.
Description
Technical field
The present invention relates to testing field more particularly to the calibration systems and method of a kind of RF instrumentation.
Background technology
Current radio frequency calibrating indicating instrument is mainly based on separate unit calibration, i.e., a signal source carries out school to a RF instrumentation
It is accurate.Same calibration flow is in different instrument cubicle repetitive operations.(for example, these instrument mainly include frequency spectrograph, comprehensive test instrument
WLAN testers) etc., calibration operation has become the important step in test process, and occupies certain workload.
Due to being calibrated in the prior art using a signal source to a RF instrumentation, after having calibrated, it is necessary to
Another RF instrumentation to be measured is accessed into test system again, then restarts calibration test, and so on, it can be seen that, existing skill
The testing efficiency of art is relatively low, and testing cost is high.
The content of the invention
The present invention provides a kind of calibration system and method for RF instrumentation, to solve in the prior art can only separate unit school
The technical issues of standard, calibration efficiency is low.The concrete scheme of the present invention is as follows：
On the one hand, the invention discloses a kind of calibration system of RF instrumentation, including：Signal provides module, signal distribution
Module, standard radio frequency instrument and control device；The signal distribution module provides module, standard radio frequency with the signal respectively
Instrument and several RF instrumentations to be measured are connected；The control device provides module, the standard radio frequency instrument with the signal respectively
Table and the RF instrumentation to be measured are connected；Wherein：The signal provides module, under control of the control means, sending survey
Trial signal；The signal distribution module, the test signal for the signal to be provided to module input pass through multiple output ports
It exports as multi-channel test signal；One of output port is connected with the standard radio frequency instrument, remaining output port difference
It connects one to one with several RF instrumentations to be measured；The control device provides module for control signal and sends test
Signal, and according to the standard radio frequency instrument of reception and the test data of several RF instrumentations to be measured, to each to be measured
RF instrumentation is calibrated.
Preferably, it is signal generator that the signal, which provides module, and the signal generator is in the control of the control device
Under system, designated frequency band, the radiofrequency signal of performance number are sent.
Preferably, the control device includes：Several RF switches, switch controller, serial server and center control
Device；The serial server respectively with the central controller, signal provide module, switch controller, standard radio frequency instrument and
Several RF instrumentations to be measured are connected, and the switch controller is connected respectively with several RF switches；Wherein：The radio frequency is opened
It closes, between the radio-frequency line connected in the standard radio frequency instrument and the signal distribution module and each RF instrumentation to be measured
A RF switch is equipped between the radio-frequency line being connected with the signal distribution module, in the work of the switch controller
Under, gating or the closing of respective radio-frequency passage are controlled；Switch controller, for controlling the switch shape of each RF switch
State；Serial server for receiving the test data of the standard radio frequency instrument and the RF instrumentation to be measured, and is fed back
To the central controller；Central controller controls the switch controller to gate the standard for passing through serial server
Radio-frequency channel and control the signal offer module of RF instrumentation and several RF instrumentations to be measured send test signal and open
Begin to test；It is additionally operable to the test data for the standard radio frequency instrument fed back according to the serial server and the radio frequency to be measured
The test data of instrument calibrates corresponding RF instrumentation to be measured.
Preferably, the central controller includes：Alignment unit and the signal control being connected respectively with the alignment unit
Unit, switch control unit and information receiving unit；Wherein：The switch control unit, for passing through the serial server
The switch controller is controlled to gate the standard radio frequency instrument and the signal, the radio-frequency channel of module and described several is provided
RF instrumentation to be measured and the signal provide the radio-frequency channel between module；The signaling control unit, for passing through the string
Signal described in mouth server controls provides module and sends designated frequency band, the radiofrequency signal of performance number as test signal；The letter
Receiving unit is ceased, for receiving the standard radio frequency instrument and several RF instrumentations to be measured by the serial server
Test data；The alignment unit, for the test data of the standard radio frequency instrument received with the signal receiving unit
As reference standard, with reference to the test data of several RF instrumentations to be measured, using error compensation method to each radio frequency to be measured
Instrument is compensated, corrected.
Preferably, connected between the central controller and the serial server by ethernet communication, in order to institute
It states central controller and long-range monitoring is realized by the serial server.
Preferably, the signal distribution module is multiport power splitter.
On the other hand, the invention discloses a kind of calibration method of RF instrumentation, applied to radiofrequency generator of the present invention
The calibration system of table, the calibration method of the RF instrumentation include：S100 control signals provide module and send test signal；S200
The test signal of input is divided into multi-channel test signal by signal distribution module to export；S300 is received and the letter
The standard radio frequency instrument of output terminal connection of number distribution module and the test data of several RF instrumentations to be measured；S400 according to
The test data of the standard radio frequency instrument and several RF instrumentations to be measured, calibrates each RF instrumentation to be measured.
Preferably, it is signal generator that the signal, which provides module, and the step S100 includes：S110 controls the signal
Generator sends designated frequency band, the radiofrequency signal of performance number.
Preferably, further included before the step S100：S010 gates the signal distribution module and is penetrated with the standard
The radio-frequency channel between radio-frequency channel and the signal distribution module and several RF instrumentations to be measured between frequency instrument；
The step S400 includes：S410 using the test data of the standard radio frequency instrument that receives as reference standard,
With reference to the test data of several RF instrumentations to be measured, each RF instrumentation to be measured is compensated using error compensation method,
It corrects.
Preferably, the signal distribution module is multiport power splitter.
The calibration system and method for the RF instrumentation of the present invention, at least possess with the next item down technique effect：
(1) present invention by the test signal of input by being divided into multi-channel test signal output so that can support several treat
It surveys RF instrumentation and carries out calibration test, without frequently replacing Devices to test, realize batch and calibrate, accelerate testing efficiency, drop
Low testing cost.
(2) several RF switches and switch controller are employed in test system of the invention, can be controlled by switching
Device flexibly controls the on off state of several RF switches to control the break-make of radio-frequency channel, and control is flexible, easily operated and realization.
(3) in test system of the invention, serial server can be connected by Ethernet with central controller, be realized remote
Process control instrument calibration, tester can control test case at any time.
(4) test signal can be divided into the identical test signal output of multichannel by the multiport power splitter that the present invention uses,
The test equipment is at low cost, is easily obtained.
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 introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is a kind of connection block diagram of the calibration system embodiment of RF instrumentation of the present invention；
Fig. 2 is a kind of connection block diagram of another embodiment of the calibration system of RF instrumentation of the present invention；
Fig. 3 is a kind of connection block diagram of another embodiment of the calibration system of RF instrumentation of the present invention；
Fig. 4 is a kind of connection block diagram of another embodiment of the calibration system of RF instrumentation of the present invention；
Fig. 5 is a kind of flow chart of the calibration method embodiment of RF instrumentation of the present invention；
Fig. 6 is a kind of flow chart of another embodiment of the calibration method of RF instrumentation of the present invention.
Reference numeral：
100-- signals provide module；200-- signal distribution modules；300-- control devices；400-- standard radio frequency instrument；
500-- RF instrumentations to be measured；310-- RF switches；320-- switch controllers；330-- serial servers；The control of 340-- centers
Device；341-- switch control units；342-- signaling control units；343-- information receiving units；344-- alignment units；110--
Signal source；210-- multiport power splitters；410-- power meters；321--MCU systems；331--RS232 serial servers；345--
Control computer.
Specific embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
It is described in detail to one step, it is clear that described embodiment is only the implementation of a part of embodiment of the present invention rather than whole
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
All other embodiment, belongs to the scope of protection of the invention.
The invention discloses a kind of calibration system of RF instrumentation, embodiment as shown in Figure 1, including：Signal provides module
100th, signal distribution module 200, standard radio frequency instrument 400 and control device 300；The signal distribution module 200 respectively with institute
Signal offer module 100, standard radio frequency instrument 400 and several RF instrumentations to be measured 500 is stated to be connected；The control device 300 divides
Module 100, the standard radio frequency instrument 400 and the RF instrumentation to be measured 500 is not provided with the signal to be connected；Wherein：Institute
It states signal and module 100 is provided, under the control of control device 300, sending test signal；The signal distribution module 200,
It is multi-channel test signal for providing the signal to test signal that module 100 inputs by the output of multiple output ports；Its
In an output port be connected with the standard radio frequency instrument 400, remaining output port respectively with several radio frequencies to be measured
Instrument 500 connects one to one；The control device 300 provides module 100 for control signal and sends test signal, and root
According to the standard radio frequency instrument 400 of reception and the test data of several RF instrumentations 500 to be measured, to each radio frequency to be measured
Instrument 500 is calibrated.
In above-described embodiment, 300 control signal of control device provides module 100 and provides test signal, and test signal is passed through
Signal distribution module 200 is divided into multi-channel test signal, wherein accessing standard radio frequency instrument 400 all the way, standard radio frequency instrument 400 is
The standard component of test, the test data of standard radio frequency instrument 400 subsequently will be as the reference standard of test data.Signal distributes mould
The remaining a few road output ports of block 200 can access multiple RF instrumentations to be measured 500, per accessible radio frequency to be measured all the way
The test data of the RF instrumentation to be measured 500 of instrument 500, the test data of standard radio frequency instrument 400 and several accesses can be transferred
To control device 300, control device 300 can be calibrated RF instrumentation 500 to be measured according to these test datas.The present embodiment
In, test signal is divided by multi-channel test signal by signal distribution module, so as to access multiple RF instrumentations to be measured, from
And realize that batch is calibrated, and is substantially increased testing efficiency, is saved the testing time.
Preferably, in the calibration system embodiment of above-mentioned RF instrumentation, it can be signal that the signal, which provides module,
Device, the signal generator send designated frequency band, the radiofrequency signal of performance number under the control of the control device.
Signal generator is a kind of equipment that can provide various frequencies, waveform and output level electric signal.It is various measuring
When the amplitude response of telecommunication system or telecommunication apparatus, frequency characteristic, transmission characteristic and other electrical parameters and measurement component
When characteristic is with parameter, signal source or driving source as test.Signal generator is also known as signal source or oscillator, in production practices
It has a wide range of applications in sciemtifec and technical sphere.
Another embodiment of the present invention, on the basis of any of the above-described embodiment, as shown in Fig. 2, the control device 300
Including：Several RF switches 310, switch controller 320, serial server 330 and central controller 340；The serial port service
Device 330 respectively with the central controller 340, signal provide module 100, switch controller 320, standard radio frequency instrument 400 and
Several RF instrumentations to be measured 500 are connected, and the switch controller 320 is connected respectively with several RF switches 310；Wherein：
The RF switch 310, between the standard radio frequency instrument 400 and the radio-frequency line of the connection of the signal distribution module 200,
And it is equipped with a RF switch between the radio-frequency line of each RF instrumentation 500 and the signal distribution module 200 connection to be measured
310, under the action of the switch controller 320, controlling gating or the closing of respective radio-frequency passage；Switch controller
320, for controlling the on off state of each RF switch 310；Serial server 330, for receiving the standard radio frequency instrument
400 and the test data of the RF instrumentation to be measured 500, and it is fed back to the central controller 340；Central controller
340, if for passing through serial server 330 switch controller 320 is controlled to gate the standard radio frequency instrument 400 and described
The radio-frequency channel and the control signal offer module 100 for doing RF instrumentation 500 to be measured send test signal and start to test；Also
For the test data of the standard radio frequency instrument 400 fed back according to the serial server 330 and the radiofrequency generator to be measured
The test data of table 500 calibrates corresponding RF instrumentation 500 to be measured.
In the present embodiment, serial server can be RS232 serial servers, and RS232 serial servers are total by RS232
Line provides module with signal and switch controller is connected, and the signal control instruction of central controller is sent to signal provides mould
Block, signal provide module and send designated frequency band, the radiofrequency signal of performance number according to the signal control instruction；Switch controller is then controlled
System is arranged on the RF switch between signal distribution module and standard radio frequency instrument and several RF instrumentations to be measured to gate or close
Close corresponding radio-frequency channel.Standard radio frequency instrument and several RF instrumentations to be measured send test data also by RS232 buses
RS232 serial servers are given, so that RS232 serial servers are fed back to central controller, central controller is further according to this
A little test datas are calibrated.
Specifically, such as signal distribution module has 4 output ports：A、B、C、D；Wherein output port A is penetrated by one
Frequency switch is connected with standard radio frequency instrument, and remaining three output ports B, C, D are treated respectively by a RF switch with one
Survey RF instrumentation connection；Standard radio frequency instrument is with having accessed three RF instrumentations to be measured of test system by RS232 buses
It is connected with RS232 serial servers；Two schemes can be used in specific test mode.It is a kind of be by the way of Time-sharing control,
Time-sharing control gates the radio-frequency channel of RF instrumentation to be measured, that is to say, that gating standard radio frequency instrument is first controlled by switch controller
Radio-frequency channel between table and the output port A of signal distribution module and gating RF instrumentation to be measured and signal distribution module
Radio-frequency channel between output port B, and output port C, D of control signal distribution module and the radio frequency of RF instrumentation to be measured lead to
Road is then closed, central controller by RS232 serial servers control signal provide module send test signal to
To signal distribution module, since the radio-frequency channel where the output port C and D of signal distribution module is off,
The test signal of output is only transferred to radio-frequency channel where the output port A and B of gating respectively, standard radio frequency instrument and with it is defeated
The corresponding RF instrumentations to be measured of exit port B will test the test data obtained again by RS232 buses after receiving test signal
It is transferred to RS232 serial servers, RS232 serial servers are transmitted to central controller again, and central controller is according to connecing
The test data of receipts calibrates the RF instrumentation to be measured corresponding to the output port B of signal distribution module.Calibration is completed
Afterwards, then pass through RS232 serial servers control switch controller gating signal distribution module output port A and C where penetrating
Frequency passage allows the RF switch that output port A and C are each connected to be in closure state, remaining radio-frequency channel is controlled to be in disconnected
Open state；It is corresponding to be measured with reference to output port C according to the test data of standard radio frequency instrument according to the same mode in front
The test data of RF instrumentation calibrates the RF instrumentation to be measured corresponding to the output port C of signal distribution module；Successively
Analogize, calibration test is carried out to the RF instrumentation to be measured corresponding to the output port D of signal distribution module in the same way.
The present invention, can be after completion test environment be built since switch controller gates different measurement circuits, need not frequently more
Devices to test is changed, builds test environment again, the testing time is saved, improves the calibration test efficiency to RF instrumentation to be measured.
Present invention optimizes testing process, reduce the testing time, improve testing efficiency, reduce testing cost.
It preferably, another testing scheme, then can be used while the mode of detection calibration, that is to say, that switch controller gates
Radio-frequency channel where all RF instrumentations to be measured of the output port of standard radio frequency instrument and access signal distribution module.Equally
, in the above-described embodiments, that is, the radio-frequency channel where four output ports A, B, C, D of signal distribution module is gated, from
And allow the standard radio frequency instrument of access output port A and RF instrumentation to be measured that output port B, C, D are each accessed can receive
To test signal, and pass through RS232 buses, respective test data is transferred to RS232 serial servers, serial server is again
These test datas are sent to central controller, after central controller receives these test datas, then are treated successively to each
RF instrumentation is surveyed to be calibrated.The testing scheme compared with above-mentioned testing scheme, can obtain multiple RF instrumentations to be measured simultaneously
Test data, be finally provided to central controller, calibrated convenient for central controller according to these test datas.The program
Testing efficiency is substantially increased, reduces test job amount, saves testing cost.
Another embodiment of present system, on the basis of above-described embodiment, as shown in figure 3, the central controller
340 include：Alignment unit 344 and signaling control unit 342, the switch control unit being connected respectively with the alignment unit 344
341 and information receiving unit 343；Wherein：The switch control unit 341 controls for passing through the serial server 330
The switch controller 320 gates radio-frequency channel and the institute that the standard radio frequency instrument 400 provides module 100 with the signal
Radio-frequency channel between several RF instrumentations to be measured 500 and signal offer module 100 is provided；The signaling control unit 342,
Designated frequency band, the radiofrequency signal of performance number are sent for by the serial server 330 signal being controlled to provide module 100
As test signal；Described information receiving unit 343 receives the standard radio frequency instrument for passing through the serial server 330
The test data of table 400 and several RF instrumentations 500 to be measured；The alignment unit 344, it is single for being received with the signal
The test data for the standard radio frequency instrument 400 that member receives is as reference standard, with reference to several RF instrumentations 500 to be measured
Test data, each RF instrumentation 500 to be measured is compensated using error compensation method, is corrected.
In above-described embodiment, after the test data sent in the corresponding RF instrumentation in radio-frequency channel for receiving gating, root
Corresponding RF instrumentation to be measured is compensated and corrected using error compensation method according to these test datas.Error compensation is exactly artificial
Ground produce a kind of new initial error go offset currently become problem original initial error, and should try one's best make the two size phase
Deng the purpose of machining accuracy is improved in direction on the contrary, so as to reach reduction mismachining tolerance.Specifically, such as standard radio frequency instrument is surveyed
The data result of examination is 100, and the test result of RF instrumentation 1 to be measured is 98；The test result of RF instrumentation 2 to be measured is 102；It treats
The test result for surveying RF instrumentation 3 is 94；Using error compensating method, i.e., by difference operation mode, by current results and in advance
The difference of phase result is compensated into tested instrument.Since the test result of RF instrumentation 1 to be measured is 98, it is necessary to compensate+2, treat
The test result of RF instrumentation 2 is surveyed as 102, it is necessary to compensate -2；The test result of RF instrumentation 3 to be measured is for 94, it is necessary to compensate+6.
Error compensation is the important content of Instrument Design, by error compensation measure, can reduce the technology to instrument each several part
It is required that or improve instrument overall accuracy it is horizontal.
Preferably, in any of the above-described system embodiment, can lead between the central controller and the serial server
Ethernet communication connection is crossed, in order to which the central controller realizes long-range monitoring by the serial server.It is in this way, central
Controller can realize remote control equipment calibration with remote monitoring.
Preferably, in any of the above-described system embodiment, the signal distribution module is multiport power splitter.Power splitter full name
Power divider, English name Power divider, multiport power splitter of the invention be it is a kind of will input signal energy point all the way
Into the device of multiple-channel output equal energy, for example, more supporting four tunnel instrument on-line calibrations the most commonly used is four port power dividers.
Input signal all the way is divided into the equal output signal of multichannel, is supported multiple radio frequencies to be measured by the present invention using multiport power splitter
Instrument carries out calibration test, compared in the prior art can only be for a RF instrumentation to be measured carries out calibration test, this
The testing efficiency of the test system of invention is greatly improved.
Another embodiment of the test system of RF instrumentation of the present invention, as shown in figure 4, including a multiport power splitter
(i.e. multiport power distribution meter) 210, signal source 110, power meter 410, RF switch 310, control computer 345, RS232 strings
Mouth server 331 and MCU system 321.Control computer 345 is by RS232 serial servers 331 to each radiofrequency generator to be measured
Table 500 carries out remote monitoring, calibration, and test result returns to control computer 345 by RS232 buses in calibration process, so
Control computer 345 compensates each RF instrumentation 500 to be measured according to the result of standard component (power meter 410), corrects afterwards, from
And the test result of each instrument is made to be consistent substantially, so as to achieve the purpose that finally to realize calibration.Specifically, each submodule is situated between
It continues as follows：
(1) multiport power splitter 210, i.e. multiport power divider, the calibration power signal that signal source 110 is emitted are same
Step distribution is sent to power meter 410 and RF instrumentation to be measured 500.
(2) signal source 110：The reference output signal of offer standard, during calibration test, it is necessary to control signal source sends specified
Frequency range, the radiofrequency signal of performance number.
(3) power meter 410：Testing standard part.For receiving signal source power signal reference is compared for other instrument.
(4) MCU system 321：Each RF instrumentation to be measured 500 is controlled to access test system, it is main to rise to RF switch 310
Control action is substantially a SCM system.That is MCU system 321 only controls radio frequency to open 310 passes, makes each to be measured
Radio frequency surveys instrument 500 and accesses test system.
(5) RF switch 310：Control gating or the closing of radio-frequency channel.According to the quantity of tested instrument, can select
Control the conducting quantity of switch.
(6) RS232 serial servers：By each test equipment of RS232 bus marcos, testing result is returned in real time to control
Computer 345, while can also remote monitoring function be realized by Ethernet.
In the present embodiment, power meter, one end of 1~instrument of RF instrumentation N to be measured and the output of multiport power divider
End connection, the other end are connected to serial server by RS232；The test data of each RF instrumentation is by by RS232 buses
Serial server is back to, control computer is then sent to by industry ethernet.
Online batch can be achieved to calibrate RF instrumentation, the calibration system hardware cost of the present embodiment is relatively low, method
Simply, calibration efficiency is high.
Based on identical technical concept, the invention also discloses a kind of calibration method of RF instrumentation, applied to the present invention
The calibration system of the RF instrumentation, specifically, as shown in figure 5, the calibration method of RF instrumentation of the present invention includes：
S100 control signals provide module and send test signal；
The test signal of input is divided into multi-channel test signal by signal distribution module and exported by S200；
It the S300 standard radio frequency instrument that is connected with the output terminal of the signal distribution module of reception and described several to be measured penetrates
The test data of frequency instrument；
S400 to be measured is penetrated to each according to the standard radio frequency instrument and the test data of several RF instrumentations to be measured
Frequency instrument is calibrated.
Preferably, in the calibration method embodiment of above-mentioned RF instrumentation, the signal provides module as signal generator, institute
Stating step S100 includes：
S110 controls the signal generator to send designated frequency band, the radiofrequency signal of performance number.
Another embodiment of calibration method of the present invention, on the basis of any of the above-described embodiment, before test, gating letter
The output terminal of number distribution module and standard radio frequency instrument and the radio-frequency channel of RF instrumentation to be measured.If there are two radio frequencies to be measured
Instrument in addition to the radio-frequency channel of gating standard radio frequency instrument, can only select the passage of one of them RF instrumentation to be measured, etc.
This RF instrumentation closes the passage after having calibrated, and gates the radio-frequency channel of another RF instrumentation to be measured again, so as to another
One RF instrumentation to be measured is calibrated.It is, of course, also possible to gate the radio-frequency channel where the two RF instrumentations to be measured simultaneously, have
Body, as shown in fig. 6, including：
S010 gates the radio-frequency channel and the signal point between the signal distribution module and the standard radio frequency instrument
With the radio-frequency channel between module and several RF instrumentations to be measured；
S110 controls the signal generator to send designated frequency band, the radiofrequency signal of performance number；
The test signal of input is divided into multi-channel test signal by signal distribution module and exported by S200；
It the S300 standard radio frequency instrument that is connected with the output terminal of the signal distribution module of reception and described several to be measured penetrates
The test data of frequency instrument；
S410 several to be measured is penetrated using the test data of the standard radio frequency instrument that receives as reference standard with reference to described
The test data of frequency instrument compensates each RF instrumentation to be measured using error compensation method, corrects.
Preferably, the present invention can also realize remote monitoring by Ethernet, the calibration test of RF instrumentation is controlled.Specifically
, each test system is controlled by RS232 serial servers, and test result is fed back into long-range control by network connection
Computer realizes remote monitoring and administration.
Preferably, the signal distribution module be multiport power splitter, such as three port power dividers, four port power dividers,
Five port power dividers etc..The test signal of input can be divided into the identical test signal of multichannel by multiport power splitter to carry out
Output so that can support the calibration test of multiple RF instrumentations to be measured.Improve testing efficiency.
The calibration method embodiment of the RF instrumentation of the present invention is corresponding with the RF instrumentation calibration system of the present invention, this hair
The technical detail of bright calibration system embodiment is equally applicable to the calibration method embodiment of the present invention, is repeated to reduce, no longer
It repeats.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (10)
1. a kind of calibration system of RF instrumentation, which is characterized in that including：Signal provides module, signal distribution module, standard and penetrates
Frequency instrument and control device；The signal distribution module provides module, standard radio frequency instrument and several with the signal respectively
RF instrumentation to be measured is connected；The control device provides module, the standard radio frequency instrument with the signal and described treats respectively
RF instrumentation is surveyed to be connected；Wherein：
The signal provides module, under control of the control means, sending test signal；
The signal distribution module, the test signal for the signal to be provided to module input are exported by multiple output ports
For multi-channel test signal；One of output port is connected with the standard radio frequency instrument, remaining output port respectively with institute
Several RF instrumentations to be measured are stated to connect one to one；
The control device provides module for control signal and sends test signal, and according to the standard radio frequency instrument of reception
The test data of table and several RF instrumentations to be measured, calibrates each RF instrumentation to be measured.
2. the calibration system of a kind of RF instrumentation according to claim 1, which is characterized in that the signal provides module and is
Signal generator, the signal generator send the radio frequency letter of designated frequency band, performance number under the control of the control device
Number.
3. the calibration system of a kind of RF instrumentation according to claim 1, which is characterized in that the control device includes：
Several RF switches, switch controller, serial server and central controller；The serial server is controlled respectively with the center
Device processed, signal provide module, switch controller, standard radio frequency instrument and several RF instrumentations to be measured and are connected, the switch control
Device is connected respectively with several RF switches；Wherein：
The RF switch, it is between the standard radio frequency instrument and the radio-frequency line of signal distribution module connection and every
A RF switch is equipped between a RF instrumentation to be measured and the radio-frequency line of signal distribution module connection, for described
Under the action of switch controller, gating or the closing of respective radio-frequency passage are controlled；
Switch controller, for controlling the on off state of each RF switch；
Serial server, for receiving the test data of the standard radio frequency instrument and the RF instrumentation to be measured, and it is anti-
It feeds the central controller；
Central controller controls the switch controller to gate the standard radio frequency instrument and described for passing through serial server
The radio-frequency channel of several RF instrumentations to be measured and the control signal offer module send test signal and start to test；It is additionally operable to
The test data of the standard radio frequency instrument and the test number of the RF instrumentation to be measured fed back according to the serial server
According to being calibrated to corresponding RF instrumentation to be measured.
A kind of 4. calibration system of RF instrumentation according to claim 3, which is characterized in that the central controller bag
It includes：The alignment unit and signaling control unit being connected respectively with the alignment unit, switch control unit and information receive single
Member；Wherein：
The switch control unit controls the switch controller to gate the standard radio frequency for passing through the serial server
Instrument is provided with the signal between the radio-frequency channel of module and several RF instrumentations to be measured and signal offer module
Radio-frequency channel；
The signaling control unit, for by the serial server control the signal provide module send designated frequency band,
The radiofrequency signal of performance number is as test signal；
Described information receiving unit, for receiving the standard radio frequency instrument and described several to be measured by the serial server
The test data of RF instrumentation；
The alignment unit, for the test data of the standard radio frequency instrument that is received using the signal receiving unit as ginseng
Sighting target is accurate, with reference to the test data of several RF instrumentations to be measured, using error compensation method to each RF instrumentation to be measured into
Row compensation is corrected.
5. the calibration system of a kind of RF instrumentation according to claim 3, which is characterized in that the central controller and institute
It states and is connected by ethernet communication between serial server, in order to which the central controller is realized by the serial server
Long-range monitoring.
6. according to a kind of calibration system of RF instrumentation of claim 1-5 any one of them, which is characterized in that the signal point
It is multiport power splitter with module.
7. a kind of calibration method of RF instrumentation, applied to the calibration system of the RF instrumentation described in claim 1-6, feature
It is, including：
S100 control signals provide module and send test signal；
The test signal of input is divided into multi-channel test signal by signal distribution module and exported by S200；
The standard radio frequency instrument and several radiofrequency generators to be measured that S300 receptions are connected with the output terminal of the signal distribution module
The test data of table；
S400 is according to the standard radio frequency instrument and the test data of several RF instrumentations to be measured, to each radiofrequency generator to be measured
Table is calibrated.
8. the calibration method of a kind of RF instrumentation according to claim 7, which is characterized in that the signal provides module and is
Signal generator, the step S100 include：
S110 controls the signal generator to send designated frequency band, the radiofrequency signal of performance number.
9. the calibration method of a kind of RF instrumentation according to claim 7, which is characterized in that before the step S100
It further includes：
S010 gates the radio-frequency channel and signal distribution mould between the signal distribution module and the standard radio frequency instrument
Radio-frequency channel between block and several RF instrumentations to be measured；
The step S400 includes：
S410 is using the test data of the standard radio frequency instrument that receives as reference standard, with reference to several radiofrequency generators to be measured
The test data of table compensates each RF instrumentation to be measured using error compensation method, corrects.
10. according to a kind of calibration method of RF instrumentation of claim 7-9 any one of them, which is characterized in that the signal
Distribution module is multiport power splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711284361.3A CN108051768A (en) | 2017-12-07 | 2017-12-07 | The calibration system and method for a kind of RF instrumentation |
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|---|---|---|---|
| CN201711284361.3A CN108051768A (en) | 2017-12-07 | 2017-12-07 | The calibration system and method for a kind of RF instrumentation |
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| CN108051768A true CN108051768A (en) | 2018-05-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093081A (en) * | 2021-06-09 | 2021-07-09 | 深圳市鼎阳科技股份有限公司 | Calibration and PV method for spectrum analyzer and production system |
| CN114257264A (en) * | 2021-12-15 | 2022-03-29 | 惠州Tcl移动通信有限公司 | Radio frequency antenna circuit, PCB and mobile terminal |
-
2017
- 2017-12-07 CN CN201711284361.3A patent/CN108051768A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093081A (en) * | 2021-06-09 | 2021-07-09 | 深圳市鼎阳科技股份有限公司 | Calibration and PV method for spectrum analyzer and production system |
| CN114257264A (en) * | 2021-12-15 | 2022-03-29 | 惠州Tcl移动通信有限公司 | Radio frequency antenna circuit, PCB and mobile terminal |
| CN114257264B (en) * | 2021-12-15 | 2023-08-11 | 惠州Tcl移动通信有限公司 | Radio frequency antenna circuit, PCB and mobile terminal |
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Application publication date: 20180518 |