CN106487455A - For system and method that radio frequency testing is adjusted and radio frequency test system - Google Patents
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Abstract
The present invention relates to the system and method for being adjusted to radio frequency testing and radio frequency test system, wherein, the method includes：Whether the time relationship between test signal that radio frequency testing used that what detection broadband comprehensive test instrument was exported carried out to communication terminal and the interference signal that signal source is exported meets test request；And, if testing result is negative, then before the test signal that the interference signal that described signal source is exported and described broadband comprehensive test instrument are exported is provided to described communication terminal, control described signal source to the output of described interference signal so that the time relationship between the test signal that exported of the interference signal that exported of described signal source and described broadband comprehensive test instrument meets described test request.The radio frequency testing result that this system and method enables to communication terminal is more accurate.
Description
Technical field
The present invention relates to technical field of radio frequency test, more particularly, to one kind is for entering to radio frequency testing
The system and method for row adjustment and a kind of radio frequency test system.
Technical background
LTE is the Long Term Evolution of mobile communication technology standard, and its marked feature is introduced into multicarrier
The technology such as technology, multi-antenna technology, high-order modulating and packet switched wirelss interface, significantly
Degree increased spectrum efficiency data transfer rate.
LTE communication technology receives each automobile vendor and zero in the introducing of car networking and application
The most commonly used concern of part supplier.The radio frequency part of LTE vehicle communication terminal is as the most basic
Fabric, its performance will determine the quality of whole in-vehicle wireless communication system.
Many schemes for communication terminal is carried out with radio frequency testing, these sides have occurred at present
Case is typically carried out to communication terminal with providing come anolog base station using comprehensive test instrument or broadband comprehensive test instrument
The test signal that radio frequency testing is used, utilizes signal source to provide for simulating in true environment
The interference signal of the interference that communication terminal may suffer from, then, the test letter being provided
Number it is supplied to communication terminal together with interference signal, the letter sending finally by detection communication terminal
Number obtaining the radio-frequency performance of communication terminal, including radio frequency static properties and radio frequency anti-interference
Energy.
However, in these schemes, due to cannot ensure between test signal and interference signal
Time relationship meets test request, therefore, frequently results in the radio frequency testing result of communication terminal not
Accurately.
Content of the invention
In view of the disadvantages described above of prior art, the present invention is provided to adjusting to radio frequency testing
Whole system and method and radio frequency test system, it can improve the radio frequency testing of communication terminal
The degree of accuracy of result.
According to a kind of radio frequency test system of the embodiment of the present invention, including：Broadband comprehensive test instrument, uses
In output, communication terminal is carried out with the multi-channel test signal that radio frequency testing is used；Some signals
Source, each signal source is used for exporting a type of interference signal；Multiple-path coupler, can be used for
Some interference signals that described some signal sources are exported merge and are based on and merged
Interference signal output multi-channel interference signal；Multiple electric bridges, each electric bridge can be used for will be described
Wherein one drive test trial signal of multi-channel test signal and wherein one tunnel of described multichannel interference signal
Interference signal merges and based on the signal output first via signal being merged and the second tunnel
Signal；Switch module, is arranged between described broadband comprehensive test instrument and the plurality of electric bridge, is used for
At least one drive test trial signal being currently used according to selection in described multi-channel test signal；Multiple
Duplexer, each duplexer is used for being exported one of electric bridge of the plurality of electric bridge
Described first via signal be supplied to described communication terminal and by described communication terminal output its
In a road signal be supplied to described broadband comprehensive test instrument；Testing equipment, for based on the plurality of double
Specified duplexer in work device is supplied to the signal of described broadband comprehensive test instrument to generate described communication
The radio frequency testing result of terminal；Signal analyzer, for based on specifying in the plurality of electric bridge
The second road signal that electric bridge is exported is obtaining the test signal that described broadband comprehensive test instrument is exported
The time relationship of the interference signal being exported with described some signal sources；And, control device,
For controlling described broadband comprehensive test instrument, described letter when radio frequency testing is carried out to described communication terminal
Number source and the operation of described switch module, and, the test being exported when described broadband comprehensive test instrument
Time relationship between the interference signal that signal and described some signal sources are exported is unsatisfactory for surveying
Examination is when requiring, if controlling described some signal sources to the output of described interference signal so that described
Interference signal that dry signal source is exported and the test signal that described broadband comprehensive test instrument is exported it
Between time relationship meet described test request.
Wherein, described signal analyzer is additionally operable to the second tunnel being exported based on described specified electric bridge
If signal is calculating the signal intensity of the test signal that described broadband comprehensive test instrument is exported and described
The signal intensity of the interference signal that dry signal source is exported, described control device is additionally operable to based on institute
If the signal intensity calculating is checking test signal that described broadband comprehensive test instrument is exported and described
Whether the interference signal that dry signal source is exported reaches signal intensity and the carrier/interface ratio of test request,
Wherein, described system also includes：Tunable attenuator, for when inspection result be negative when,
Interference signal that described some signal sources are exported and/or the survey that described broadband comprehensive test instrument is exported
Before trial signal is provided to described communication terminal, test that described broadband comprehensive test instrument is exported
The interference signal that signal and/or described some signal sources are exported is decayed.
Wherein, described electric bridge is 3dB electric bridge.
Wherein, described communication terminal is vehicle communication terminal, and, described interference signal be
Distinctive interference signal in vehicle environmental.
Wherein, described testing equipment is signal analyzer.
Wherein, described broadband comprehensive test instrument and described testing equipment are same equipment.
Wherein, described test request is interference signal that described some signal sources are exported and described
The test signal that broadband comprehensive test instrument is exported is synchronous, or, described some signal sources are exported
The test signal that interference signal and described broadband comprehensive test instrument are exported has the asynchronous of specified time delay.
According to a kind of method for being adjusted to radio frequency testing of the embodiment of the present invention, wrap
Include：What detection broadband comprehensive test instrument was exported carries out, to communication terminal, the test that radio frequency testing is used
Whether the time relationship between the interference signal that signal and signal source are exported meets test request；
And, if testing result is negative, the interference signal being exported in described signal source and institute
State before the test signal that broadband comprehensive test instrument exported is provided to described communication terminal, control institute
State signal source to the output of described interference signal so that the interference that described signal source is exported is believed
Time relationship number and the test signal that exported of described broadband comprehensive test instrument between meets described survey
Examination requires.
Wherein, methods described also includes：Calculate the letter of the interference signal that described signal source is exported
The signal intensity of the test signal that number intensity and described broadband comprehensive test instrument are exported；It is based on and calculated
Signal intensity checking the interference signal and described broadband comprehensive test instrument that described signal source is exported
Whether the test signal being exported is signal intensity and the carrier/interface ratio reaching test request；And,
If inspection result is negative, the interference signal being exported in described signal source and described broadband
Before the test signal that comprehensive test instrument is exported is provided to described communication terminal, to described signal source
The test signal that the interference signal being exported and/or described broadband comprehensive test instrument are exported is declined
Subtract.
Wherein, described communication terminal is vehicle communication terminal, and, described interference signal is car
Distinctive interference signal in environment.
According to a kind of system for being adjusted to radio frequency testing of the embodiment of the present invention, wrap
Include：Signal analyzer, carries out radio frequency for obtain that broadband comprehensive test instrument exported to communication terminal
Test the time relationship between the interference signal that used test signal and signal source are exported；
Control device, if the interference signal being exported for described signal source and described broadband comprehensive test instrument
Time relationship between the test signal being exported is unsatisfactory for test request, then in described signal source
The test signal that the interference signal being exported and described broadband comprehensive test instrument are exported is provided to institute
Before stating communication terminal, control described signal source to the output of described interference signal so that described
Between interference signal that signal source is exported and the test signal that described broadband comprehensive test instrument is exported
Time relationship meet described test request.
Wherein, described signal analyzer is additionally operable to calculate the interference signal that described signal source is exported
Signal intensity and the signal intensity of test signal that exported of described broadband comprehensive test instrument, described control
It is dry that control equipment is additionally operable to check that described signal source is exported based on the signal intensity being calculated
Disturb signal and test signal that described broadband comprehensive test instrument is exported whether to reach test required
Signal intensity and carrier/interface ratio, wherein, described system also includes：Tunable attenuator, for when inspection
When the fruit that comes to an end is negative, the interference signal being exported in described signal source and described broadband comprehensive test instrument
Before the test signal being exported is provided to described communication terminal, described signal source is exported
Interference signal and/or the test signal that exported of described broadband comprehensive test instrument decayed so that
The test letter that exported of the interference signal that exported of described signal source and described broadband comprehensive test instrument
Number reach the required signal intensity of described test and carrier/interface ratio.
It can be seen from the above that the solution of the present invention detects what broadband comprehensive test instrument was exported
Whether the time relationship between the interference signal that test signal and signal source are exported meets test
Require, and when this time relationship is unsatisfactory for test request, control signal source is to interference signal
Output is so that the test letter that exported of the interference signal that exported of signal source and broadband comprehensive test instrument
Time relationship between number meets test request, therefore, compared with prior art, the present invention's
Scheme can improve the degree of accuracy of the radio frequency testing result of communication terminal.
Brief description
The further feature of the present invention, feature, advantage and benefit are passed through detailed below in conjunction with accompanying drawing
Description will become apparent from.
Fig. 1 shows the schematic diagram of the radio frequency test system according to one embodiment of the invention；
Fig. 2 shows according to one embodiment of the invention for being adjusted to radio frequency testing
Method flow chart.
Specific embodiment
Below, will be described in detail with reference to accompanying drawings each embodiment of the present invention.
With reference now to Fig. 1, it illustrates the radio frequency test system according to one embodiment of the invention
Schematic diagram.Radio frequency test system shown in Fig. 1 is used for the LTE car with two antennas
Carry communication terminal and carry out radio frequency testing.
As shown in figure 1, radio frequency test system 10 can include broadband comprehensive test instrument 104, n letter
Number source 108,112, four tunable attenuator 116A-116D of RF switching unit, two electricity
Bridge 120A-120B, two duplexer 124A-124B, testing equipment 128, isolators
132A-132B, combiner 136, signal analyzer 140 and control device 144.
Broadband comprehensive test instrument 104, enters to LTE vehicle communication terminal 20 to be tested for output
Two-way test signal C1 and C2 that row radio frequency testing is used.For example, broadband comprehensive test instrument 104
The comprehensive tester that can be produced using Deco skill (Keysight Technologies Inc.)
KeysightE7515A UXM.Wherein, comprehensive tester KeysightE7515A UXM makees
For base station simulator, can generate communication terminal to be tested carry out with base station registering, authenticate plus
Close, connect and resource allocation etc. needed for signaling to simulate communication terminal to be tested and base station
Interaction, can generate varying level, different channels, different time-gap and different modulating encoding scheme
The useful test signal of base station down, and, communication terminal to be tested can be ordered to enter not
The test pattern of same type is to execute the transmitter and receiver performance measurement in band.
N signal source 108 export respectively n different types of interference signal I1, I2 ...,
In.Interference signal I1, I2 ..., In be distinctive interference signal in vehicle environmental.Here,
N is greater than or equal to 1 integer.
RF switching unit 112 includes switch module 1124 and multiple-path coupler 1128.Wherein,
Switch module 1124 includes two switch element A1 and A2.Switch element A1 is used for width
There is provided tunable attenuator 116A, switch element with the signal C1 that comprehensive test instrument 104 is exported
The signal C2 that A2 is used for being exported broadband comprehensive test instrument 104 provides tunable attenuator 116C.
Under the control of control device 144, can be by switch element A1 and A2 from this two drive test
One or multi-channel test signal being currently used is selected in trial signal C1 and C2.
Multiple-path coupler 1128 is connected to this n signal source 108, for interference signal I1,
I2 ..., In merge and based on merged interference signal output two-way interference signal I1 '
And I2 ', wherein, interference signal I1 ' it is output to tunable attenuator 116B, and, interference
Signal I2 ' is output to tunable attenuator 116D.
Tunable attenuator 116A-116D is by received signal C1, I1 ', C2 and I2 ' output
To two electric bridge 120A-120B, wherein, signal C1, I1 ' it is output to electric bridge 120A, letter
Number C2 and I2 ' is output to electric bridge 120B.Here, in signal C1, I1 ', C2 and I2 '
Before being output to electric bridge 120A-120B, if it is desired, tunable attenuator 116A-116D
Can be respectively to signal C1, I1 ', C2 and I2 ' decay.
Electric bridge 120A is by received signal C1, I1 ' merge and based on being merged
Signal output first via signal S1 and second road signal S2, wherein, electric bridge 120A is exported
First via signal S1 be provided to duplexer 124A.Electric bridge 120B is by received signal
C2, I2 ' merge and based on signal output first via signal S1 being merged and the second tunnel
Signal S2, wherein, first via signal S1 that electric bridge 120B is exported is provided to duplexer
124B, second road signal S2 that electric bridge 120B is exported is provided to signal analyzer 140.
In the present embodiment, electric bridge 120A and electric bridge 120B can be to have high-precision 3dB electricity
Bridge.
Signal S1 from electric bridge 120A is supplied to LTE vehicle-carrying communication by duplexer 124A
First point of wire module (not shown) of terminal 20 and by LTE vehicle communication terminal 20 via
The signal of this first point of wire module output is supplied to combiner 136 via isolator 132A.Close
Signal from duplexer 124A is divided into two paths of signals by road device 136, and wherein one road signal carries
Supply broadband comprehensive test instrument 104, another road signal is supplied to testing equipment 128.Duplexer 124B
Signal S1 from electric bridge 120B is supplied to the second dotted line of LTE vehicle communication terminal 20
LTE vehicle communication terminal 20 is simultaneously passed through the output of this second point wire module by module (not shown)
Signal be supplied to broadband comprehensive test instrument 104 via isolator 132B.Here, duplexer 124A
Can be circulator with duplexer 124B.
Testing equipment 128 is to LTE vehicle communication terminal 20 institute receiving from combiner 136
The signal of output is detected to obtain the radio frequency testing result of LTE vehicle communication terminal 20,
And the radio frequency testing result being obtained is sent to control device 144.Here, testing equipment 128
It can be a signal analyzer.
Signal analyzer 140 obtains the comprehensive survey in broadband using the signal S2 from electric bridge 120B
Time between test signal that instrument 104 is exported and the interference signal that signal source 108 is exported
Relation and calculate the signal intensity of test signal and the signal that broadband comprehensive test instrument 104 is exported
The signal intensity of the interference signal that source 108 is exported, and the signal obtaining result with calculated
Intensity is sent to control device 144.
Control device 144 is the control centre of radio frequency test system 10, and it is comprehensive with broadband respectively
Survey instrument 104, signal source 108, the switch module 1124 in RF switching unit 108, adjustable
Decay instrument 116A-116D, testing equipment 128, signal analyzer 140 and LTE vehicle-carrying communication
Terminal 20 connect with control they are controlled.Here, control device 144 can be one
Platform general purpose computer.
Specifically, control device 144 can execute following operation：Initialize rank in radio frequency testing
Section, starts broadband comprehensive test instrument 104, signal source 108 and LTE vehicle communication terminal 20 root
According to using test case their running parameter is set.
Additionally, control device 144 can also carry out following operation：During radio frequency testing, control
Switch element in switch module 1124 processed is to select the test signal being currently used.
Additionally, control device 144 can also carry out following operation：During radio frequency testing, base
To check the survey that broadband comprehensive test instrument 104 is exported in the acquisition result from signal analyzer 140
Whether the time relationship between the interference signal that trial signal and signal source 108 are exported meets survey
Examination requires, and, if inspection result is negative, control signal source 108 is to interference signal
Output so that the interference signal that exported of signal source 108 and broadband comprehensive test instrument 104 are exported
Test signal between time relationship meet test request.Here, test request can be wide
The interference signal that the test signal being exported with comprehensive test instrument 104 and signal source 108 are exported with
Step, or, the test signal that broadband comprehensive test instrument 104 is exported and signal source 108 are exported
Interference signal has the asynchronous of specified time delay (such as 10 symbols).
Additionally, control device 144 can also carry out following operation：Based on signal analyzer 140
The signal intensity being calculated is checking the test signal and signal that broadband comprehensive test instrument 104 is exported
Whether the interference signal that source 108 is exported reaches signal intensity and the carrier/interface ratio of test request, with
And, when inspection result shows：Test signal and/or signal that broadband comprehensive test instrument 104 is exported
The interference signal that source 108 is exported is not up to the signal intensity of test request, and/or, broadband
Test signal that comprehensive test instrument 104 is exported and the interference signal that signal source 108 is exported are not up to
During the carrier/interface ratio of test request, tunable attenuator 116A-116D is to broadband comprehensive test instrument 104 for instruction
The interference signal that the test signal being exported and/or signal source 108 are exported is decayed, with
Make test signal that broadband comprehensive test instrument 104 exported and the interference letter that signal source 108 is exported
Number reach signal intensity and the carrier/interface ratio of test request.
Additionally, control device 144 can also carry out following operation：Receive from testing equipment 128
Radio frequency testing result simultaneously assumes received radio frequency testing result to tester.
Wherein, tunable attenuator 116A-116D, signal analyzer 140 and control device 144
Constitute the system for being adjusted to radio frequency testing, it makes LTE vehicle communication terminal 20
Radio frequency testing result more accurate.
Specifically, signal analyzer 140 detects the test signal that broadband comprehensive test instrument 104 is exported
The time relationship and interference signal that exported of signal source 108 between, control device 144 checks
Whether the time relationship that signal analyzer 140 is detected meets test request, and, work as inspection
It is dry that result shows test signal that broadband comprehensive test instrument 104 exported and signal source 108 is exported
When disturbing the time relationship between signal and being unsatisfactory for test request, control device 144 control signal source
The output of 108 pairs of interference signals is so that the interference signal that exported of signal source 108 and broadband are comprehensive
Survey the time relationship between the test signal that exported of instrument 104 meet test request such that it is able to
Improve the degree of accuracy of the radio frequency testing result of LTE vehicle communication terminal 20.
Additionally, signal analyzer 140 calculates the test signal that broadband comprehensive test instrument 104 is exported
The signal intensity of the interference signal that signal intensity and signal source 108 are exported, and, work as broadband
Test signal that comprehensive test instrument 104 is exported and/or the interference signal that signal source 108 is exported are not
Reach the required signal intensity of test, and/or, the test that broadband comprehensive test instrument 104 is exported
The interference signal that signal and signal source 108 are exported is not up to when testing required carrier/interface ratio,
Control device 144 instruction tunable attenuator 116A-116D is exported to broadband comprehensive test instrument 104
Test signal and/or the interference signal that exported of signal source 108 decayed, so that wide
The interference signal that the test signal being exported with comprehensive test instrument 104 and signal source 108 are exported reaches
The required signal intensity of test and carrier/interface ratio, this also can improve LTE vehicle-carrying communication eventually
The degree of accuracy of the radio frequency testing result at end 20.
With reference now to Fig. 2, it illustrates according to one embodiment of the invention for surveying to radio frequency
The flow chart of the method that examination is adjusted.
As shown in Fig. 2 in step S200, obtain that broadband comprehensive test instrument 104 exported to LTE
Vehicle communication terminal 20 carries out test signal that radio frequency testing used and signal source 108 institute is defeated
Time relationship between the interference signal going out.Step S200 can be by signal analyzer 140
Realize.
In step S210, whether the time relationship acquired in checking step S200 meets test will
Ask.Step S210 can be realized by control device 144.
In step S220, if the inspection result of step S210 is negative, that is,：The comprehensive survey in broadband
Time between test signal that instrument 104 is exported and the interference signal that signal source 108 is exported
Relation is unsatisfactory for test request, then the comprehensive survey of interference signal and broadband being exported in signal source 108
Before the test signal that instrument 104 is exported is provided to LTE vehicle communication terminal 20, control
Signal source 108 to the output of interference signal so that the interference signal that exported of signal source 108 with
Time relationship between the test signal that broadband comprehensive test instrument 104 is exported meets test request.Step
Rapid S220 can be realized by control device 144.
The signal intensity of the interference signal being exported in step S230, signal calculated source 108 and
The signal intensity of the test signal that broadband comprehensive test instrument 104 is exported.Step S230 can be by believing
Number analyser 140 is realizing.
In step S240, signal source 108 is checked based on the signal intensity that step S230 is calculated
Whether the test signal that the interference signal being exported and broadband comprehensive test instrument 104 are exported reaches survey
Signal intensity and carrier/interface ratio that examination requires.Step S240 can be realized by control device 144.
In step S250, if the inspection result of step S240 is negative, that is,：Signal source 108
The test signal that the interference signal being exported and/or broadband comprehensive test instrument 104 are exported is not up to be surveyed
The signal intensity that examination requires, and/or, the interference signal that signal source 108 is exported and broadband are comprehensive
Survey the carrier/interface ratio of the test signal not up to test request that instrument 104 is exported, then in signal source
The test signal that 108 interference signals being exported and broadband comprehensive test instrument 104 are exported is provided to
Before LTE vehicle communication terminal 20, the interference signal that signal source 108 is exported and/or width
The test signal being exported with comprehensive test instrument 104 is decayed.Step S250 can be declined by adjustable
Subtract instrument 116A-116D to realize.
Wherein, step S230 can also be performed before step S200, or, step
S230 and step S200 are performed simultaneously.
Other modifications
Although it will be appreciated by those skilled in the art that in the above embodiments, radio frequency testing system
System 10 includes tunable attenuator 116A-116D to decay to signal, however, the present invention
It is not limited thereto.In some other embodiment of the present invention, such as signal source 108 and width
Itself can adjust the signal intensity of exported signal with comprehensive test instrument 104, then radio frequency testing system
System 10 can not also include tunable attenuator 116A-116D.
Although it will be appreciated by those skilled in the art that in the above embodiments, radio frequency testing system
System 10 is only applicable to carry out radio frequency testing to the communication terminal with two Anneta modules, however,
The invention is not limited in this.In some other embodiment of the present invention, radio frequency test system
10 can also be applied to carry out radio frequency testing to the communication terminal with more than two Anneta module.
It is applied to the communication terminal with more than two Anneta module is carried out in radio frequency test system 10
In the case of radio frequency testing, broadband comprehensive test instrument 104 output is more than the test signal of two-way, meanwhile,
The quantity of the tunable attenuator included by radio frequency test system 10, electric bridge and duplexer is also corresponding
Increase.
Although it will be appreciated by those skilled in the art that in the above embodiments, radio frequency testing system
System 10 includes testing equipment 128 to obtain the radio frequency testing result of communication terminal, however, this
Invention is not limited thereto.In some other embodiment of the present invention, can be in the comprehensive survey in broadband
The function of testing equipment 128, in this case, radio frequency test system is realized in instrument 104
10 do not need including testing equipment 128 and combiner 136.
It will be appreciated by those skilled in the art that radio frequency test system 10 is applied to test Vehicle-carrying type steel
Type and the communication terminal of communication terminal and off-board type, and it is adaptable to test various communications
Standard and the communication terminal of various communication standard.
It will be appreciated by those skilled in the art that each embodiment described above can be not inclined
Make various changes and modifications in the case of invention essence, these deformation and modification fall within
Within protection scope of the present invention.
Claims (12)
1. a kind of radio frequency test system, including：
Broadband comprehensive test instrument, carries out, for output, many drive tests that radio frequency testing is used to communication terminal
Trial signal；
Some signal sources, each signal source is used for exporting a type of interference signal；
Multiple-path coupler, some interference signals that can be used for being exported described some signal sources are entered
Row merges and based on the interference signal output multi-channel interference signal being merged；
Multiple electric bridges, each electric bridge can be used for wherein one drive test of described multi-channel test signal
Wherein one tunnel interference signal of trial signal and described multichannel interference signal merges and is based on
The signal output first via signal being merged and second road signal；
Switch module, is arranged between described broadband comprehensive test instrument and the plurality of electric bridge, for root
At least one drive test trial signal being currently used according to selection in described multi-channel test signal；
Multiple duplexers, each duplexer is used for one of electric bridge of the plurality of electric bridge
The described first via signal being exported is supplied to described communication terminal and by described communication terminal
Wherein one road signal of output is supplied to described broadband comprehensive test instrument；
Testing equipment, described for being supplied to based on the specified duplexer in the plurality of duplexer
The signal of broadband comprehensive test instrument is generating the radio frequency testing result of described communication terminal；
Signal analyzer, for exported based on the specified electric bridge in the plurality of electric bridge second
Road signal is obtaining the test signal that described broadband comprehensive test instrument is exported and described some signal sources
Time relationship between the interference signal being exported；And
Control device, for controlling described broadband when carrying out radio frequency testing to described communication terminal
The operation of comprehensive test instrument, described signal source and described switch module, and, when the comprehensive survey in described broadband
Between test signal that instrument is exported and the interference signal that described some signal sources are exported when
Between relation when being unsatisfactory for test request, control described some signal sources defeated to described interference signal
Go out, so that the interference signal that exported of described some signal sources and described broadband comprehensive test instrument institute are defeated
Time relationship between the test signal going out meets described test request.
2. the system as claimed in claim 1, wherein,
Described signal analyzer is additionally operable to the second road signal being exported based on described specified electric bridge
To calculate the signal intensity of the test signal that described broadband comprehensive test instrument is exported and described some letters
The signal intensity of number interference signal that source is exported,
Described control device is additionally operable to check that based on the signal intensity being calculated described broadband is comprehensive
Survey the test signal that exported of instrument and whether interference signal that described some signal sources are exported reaches
To the required signal intensity of test and carrier/interface ratio,
Wherein, described system also includes：
Tunable attenuator, for when inspection result is negative, defeated in described some signal source institutes
The test signal that the interference signal going out and described broadband comprehensive test instrument are exported is provided to described logical
Before letter terminal, the test signal that described broadband comprehensive test instrument is exported and/or described some letters
Number interference signal that source is exported is decayed, so that the survey that described broadband comprehensive test instrument is exported
It is required that the interference signal that trial signal and described some signal sources are exported reaches described test
Signal intensity and carrier/interface ratio.
3. the system as claimed in claim 1, wherein,
Described electric bridge is 3dB electric bridge.
4. the system as claimed in claim 1, wherein,
Described communication terminal is vehicle communication terminal, and
Described interference signal is distinctive interference signal in vehicle environmental.
5. the system as claimed in claim 1, wherein,
Described testing equipment is signal analyzer.
6. the system as claimed in claim 1, wherein,
Described broadband comprehensive test instrument and described testing equipment are same equipment.
7. the system as claimed in claim 1, wherein,
Described test request is the interference signal and described broadband that described some signal sources are exported
The test signal that comprehensive test instrument is exported is synchronous, or, the interference that described some signal sources are exported
The test signal that signal and described broadband comprehensive test instrument are exported has the asynchronous of specified time delay.
8. a kind of method for being adjusted to radio frequency testing, including：
What detection broadband comprehensive test instrument was exported carries out, to communication terminal, the survey that radio frequency testing is used
Whether the time relationship between the interference signal that trial signal and signal source are exported meets test will
Ask；And
If testing result is negative, the interference signal being exported in described signal source and described
Before the test signal that broadband comprehensive test instrument is exported is provided to described communication terminal, control described
Signal source is to the output of described interference signal so that the interference signal that exported of described signal source
The time relationship and test signal that exported of described broadband comprehensive test instrument between meets described test
Require.
9. method as claimed in claim 8, wherein, also includes：
Calculate the comprehensive survey of signal intensity and described broadband of the interference signal that described signal source is exported
The signal intensity of the test signal that instrument is exported；
Checked based on the signal intensity being calculated interference signal that described signal source exported and
Whether the test signal that described broadband comprehensive test instrument is exported reaches the required signal intensity of test
And/or carrier/interface ratio；And
If inspection result is negative, the interference signal being exported in described signal source and described
Before the test signal that broadband comprehensive test instrument is exported is provided to described communication terminal, to described letter
Number interference signal that source is exported and/or the test signal that described broadband comprehensive test instrument is exported are carried out
Decay, so that the test signal that exported of described broadband comprehensive test instrument and described some signal source institutes
The interference signal of output reaches the required signal intensity of described test and carrier/interface ratio.
10. method as claimed in claim 8, wherein,
Described communication terminal is vehicle communication terminal, and
Described interference signal is distinctive interference signal in vehicle environmental.
A kind of 11. systems for being adjusted to radio frequency testing, including：
Signal analyzer, carries out radio frequency for obtain that broadband comprehensive test instrument exported to communication terminal
Test the time relationship between the interference signal that used test signal and signal source are exported；
Control device, for when acquired time relationship is unsatisfactory for test request, described
Interference signal that signal source is exported and the test signal that described broadband comprehensive test instrument is exported are carried
Before supplying described communication terminal, control described signal source to the output of described interference signal so that
The test letter that exported of the interference signal that exported of described signal source and described broadband comprehensive test instrument
Time relationship between number meets described test request.
12. systems as claimed in claim 11, wherein
Wherein, described signal analyzer is additionally operable to calculate the interference signal that described signal source is exported
Signal intensity and the signal intensity of test signal that exported of described broadband comprehensive test instrument,
Described control device is additionally operable to check described signal source based on the signal intensity being calculated
Whether the test signal that the interference signal being exported and described broadband comprehensive test instrument are exported reaches survey
The required signal intensity of examination and carrier/interface ratio,
Wherein, described system also includes：
Tunable attenuator, for when inspection result is negative, being exported in described signal source
The test signal that interference signal and described broadband comprehensive test instrument are exported is provided to described communication eventually
Before end, the interference signal that described signal source is exported and/or described broadband comprehensive test instrument institute are defeated
The test signal going out is decayed so that the test signal that exported of described broadband comprehensive test instrument and
The interference signal that described some signal sources are exported reaches the required signal intensity of described test
And carrier/interface ratio.
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| CN110333406A (en) * | 2019-07-04 | 2019-10-15 | 重庆唯申科技有限公司 | Electronic tag interference free performance test method, test equipment and storage medium |
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| CN103217607A (en) * | 2013-04-08 | 2013-07-24 | 福建省产品质量检验研究院 | Test device and test method for broadband radiated immunity of vehicle display device as well as application |
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| CN102843200A (en) * | 2012-09-13 | 2012-12-26 | 青岛海信移动通信技术股份有限公司 | Radio frequency test device and mobile terminal test system |
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