CN208939969U - A kind of test macro for RF receiving and transmission module - Google Patents
A kind of test macro for RF receiving and transmission module Download PDFInfo
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- CN208939969U CN208939969U CN201821920244.1U CN201821920244U CN208939969U CN 208939969 U CN208939969 U CN 208939969U CN 201821920244 U CN201821920244 U CN 201821920244U CN 208939969 U CN208939969 U CN 208939969U
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Abstract
The utility model discloses a kind of test macro for RF receiving and transmission module, comprising: the first signal source, second signal source, third signal source, the first coupler, the second coupler, third coupler, the first RF switch, the second RF switch, the first attenuator, the second attenuator, adjustable numerical-control attenuator, the first combiner, the second combiner, the first power meter, the second power meter, duplexer and spectrum analyzer.The utility model reduces the frequency for using and replacing test port and test equipment of power meter, simplifies wiring, reduces the level of skill requirement of tester, improves the reliability of test.
Description
Technical field
The utility model relates to the testing field of radio-frequency module more particularly to a kind of test systems for RF receiving and transmission module
System.
Background technique
When testing base station radio frequency module, the main gain for testing RX link, noise, receiving sensitivity, obstruction,
The indexs such as anti-interference grade, input intermodulation decaying, it is the gain of TX link, peak power output, power consumption, spectral emission template, miscellaneous
Distribute penetrate, the parameters such as frequency error, vector amplitude error.In order to accurately test indices, reduce instrument error to survey
The influence of test result, test Shi Huiyong power meter carry out testing source and export to the hair for receiving power and TX link of RX link
Penetrate power.It is that individual event is tested some and referred to and at present to the test of radio-frequency module, either manual test or automatic test
Mark.
And current base station is generally used MIMO technology, when test, will be replaced as frequently as test port, in order to guarantee to survey
Examination accuracy needs frequent calibration power meter and power meter is connected on different instrument and test port.Testing efficiency compared with
It is low, and there are the risks of the damage instrument of artificial maloperation, and this process needs tester to understand product in depth,
And need sturdy theory of testing basis.Because tester level and uncertain factor influence whether test as a result,
Lead to the reliability decrease of test.
Therefore, the prior art is defective, needs to improve.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of test system for RF receiving and transmission module
System.
The technical solution of the utility model is as follows: the utility model provides a kind of test macro of RF receiving and transmission module, packet
It includes: the first signal source, second signal source, third signal source, the first coupler, the second coupler, third coupler, the first radio frequency
Switch, the second RF switch, the first attenuator, the second attenuator, adjustable numerical-control attenuator, the first combiner, the second combiner,
First power meter, the second power meter, duplexer and spectrum analyzer；
First signal source, second signal source, third signal source output end respectively with corresponding first coupler,
The input terminal of two couplers and third coupler is electrically connected, the coupled end of second coupler and third coupler with it is described
Second RF switch input terminal is electrically connected, second RF switch common end and the first coupler coupled end with it is described
First RF switch input terminal is electrically connected, and first RF switch common end electrically connects with the second attenuator input terminal
It connects, the second attenuator output end and the second power meter input terminal are electrically connected；
The straight-through end of first coupler is electrically connected with the adjustable numerical-control attenuator input terminal, and the adjustable numerical control declines
Subtract the straight-through end of device output end, second coupler and the straight-through end of the third coupler and the second combiner input terminal electricity
Property connection, the second combiner output end and the end the duplexer RX0 are electrically connected；
The end radio-frequency module TX0/RX0 and the end the duplexer TX0/RX0 to be tested is electrically connected, the duplexer TX0
End is electrically connected with the first attenuator input terminal, the first attenuator output end and the first combiner input terminal electricity
Property connection, the first combiner output end respectively with the spectrum analyzer input terminal and the first power meter input terminal electricity
Property connection
It further, further include third RF switch, third attenuator and third combiner；The radio frequency mould to be tested
The end block TX1/RX1 and the end the duplexer TX1/RX1 are electrically connected, the second combiner output end and the third combiner
Input terminal is electrically connected, and the third combiner output end is electrically connected with the end the duplexer RX0 and the end RX1 respectively, described
The end duplexer TX1 and the third attenuator input terminal are electrically connected, the third attenuator output end and first decaying
Device output end and the third RF switch input terminal are electrically connected, third RF switch common end and first combining
Device input terminal is electrically connected.
It further, further include client's control terminal.
Further, first signal source, second signal source, third signal source, spectrum analyzer, the first power meter and
Second power meter turns USB module by GPIB and communicates with client's control terminal.
Further, the coefficient of coup of first coupler, the second coupler and third coupler is 20dB.
Using the above scheme, the utility model reduces the frequency for using and replacing test port and test equipment of power meter
Rate simplifies wiring, reduces the level of skill requirement of tester, improves the reliability of test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to Fig. 1, in the present embodiment, radio-frequency module 1 to be tested is binary channels, the utility model provides a kind of use
In the test macro of RF receiving and transmission module, comprising: the first signal source 101, second signal source 102, third signal source 103, first
Coupler 201, the second coupler 202, third coupler 203, the first RF switch 301, the second RF switch 302, third are penetrated
Frequency switch 303, the first attenuator 501, the second attenuator 502, third attenuator 503, adjustable numerical-control attenuator 504, first close
Road device 401, the second combiner 402, third combiner 403, the first power meter 601, the second power meter 602, duplexer 2 and frequency spectrum
Analyzer 3.
First signal source 101, second signal source 102, third signal source 103 output end respectively with corresponding first
The input terminal of coupler 201, the second coupler 202 and third coupler 203 is electrically connected, second coupler 202 and the
The coupled end of three couplers 203 and 302 input terminal of the second RF switch are electrically connected, and second RF switch 302 is public
End and 201 coupled end of the first coupler are electrically connected with 301 input terminal of the first RF switch respectively altogether, and described first
301 common end of RF switch and 502 input terminal of the second attenuator are electrically connected, 502 output end of the second attenuator with
Second power meter defeated 602 enters end and is electrically connected.
The straight-through end of first coupler 201 is electrically connected with adjustable 504 input terminal of numerical-control attenuator, described adjustable
The straight-through end of 504 output end of numerical-control attenuator, second coupler 202 and the straight-through end of the third coupler 203 respectively with institute
The electric connection of 402 input terminal of the second combiner is stated, 402 output end of the second combiner and the third combiner 403 input
End is electrically connected, and 403 output end of third combiner is electrically connected with the end the duplexer 2RX0 and the end RX1 respectively.
The end radio-frequency module 1TX0/RX0 and the end the duplexer 2TX0/RX0 to be tested is electrically connected, radio frequency to be tested
The end module 1TX1/RX1 and the end the duplexer 2TX1/RX1 are electrically connected, the end the duplexer 2TX0 and first attenuator
501 input terminals are electrically connected, and the end the duplexer 2TX1 and 503 input terminal of third attenuator are electrically connected, and described first
The input terminal of 501 output end of attenuator and 503 output end of third attenuator respectively with the third RF switch 303 electrically connects
It connects, 303 common end of third RF switch and 401 input terminal of the first combiner are electrically connected, first combiner
401 output ends are electrically connected with 3 input terminal of spectrum analyzer and 601 input terminal of the first power meter respectively.
This system further includes client's control terminal (not shown), first signal source 101, second signal source 102, third letter
Number source 103, spectrum analyzer 3, the first power meter 601 and the second power meter 602 turn USB module and client's control terminal by GPIB
It communicates, the RF switch and the numerical-control attenuator 504 in this system are also communicated with client's control terminal, and client's control terminal can
To control RF switch, the functions such as test assignment customization, mobile station control, attenuator control and Communication Control are completed.
The effect of the duplexer 2 is to carry out selection combining to the frequency of TX/RX signal, is mainly used for inhibiting unwanted
Signal allows the signal of needs to pass through.The effect of first attenuator 501 and the second attenuator 502 is respectively to TX0, TX1
Transmitting signal decay with guarantee the spectrum analyzer 3 and first power meter 601 input signal power at it
Below the maximum power of permission.The effect of the third RF switch 303 is that the transmitting signal to TX0/RX0 is selected and incited somebody to action
The signal not measured is isolated.First combiner 401 is to believe the transmitting of radio-frequency module 1TX0/TX1 to be tested
Number branch is measured to first power meter 601 and the spectrum analysis 3.The spectrum analyzer 3 is mainly used for measuring
Gain, spectral emission template, spurious emissions, power error and vector amplitude error of TX link etc..First power meter 601
Be mainly used for test TX output power and subtest different capacity grade spectral emission template, frequency error and arrow
Discharge amplitude error etc..
First signal source 101 as the master source of test RX link be mainly test the gain of RX link, noise,
The indexs such as receiving sensitivity, obstruction and anti-interference grade export signal.RX resistance is predominantly tested in the second signal source 102
Plug, anti-interference grade provide required interference signal.The third signal source 103 mainly and the second signal source 102 1
It rises to measure the input intermodulation of RX decaying and providing intermodulation deamplification.First coupler 201, the second coupler 202 and
The effect of three couplers 203 is that the signal respectively by corresponding signal source output is coupled to second power meter 602, to guarantee
Maximum power that the signal that second power meter 602 inputs allows at it is hereinafter, signal without influencing to be input to the port RX
Power level.The main function of second RF switch 302 and the first RF switch 301 is successively to select first signal
The output signal in source 101, second signal source 102 and third signal source 103 enters second power meter 602 and is isolated unmeasured
Signal.The effect of second attenuator 502 is that the signal of signal source input is carried out decaying to guarantee second function
The power for the signal that rate meter 602 inputs is below the maximum power that it allows.Second power meter 602 is mainly used for measuring institute
State the output that the output power of the first signal source 101, second signal source 102 and third signal source 103 makes it meet test request
Power.The effect of the adjustable numerical-control attenuator 504 is when testing the receiving sensitivity of RX to first signal source 101
Signal is decayed by the level demand of test signal to meet the measurement of RX link different capacity grade receiving sensitivity.It is described
The effect of second combiner 402 is the test signal that signal is combined to composition different frequency and power.The third combining
The effect of device 403 be mainly by signal branch that second combiner 402 exports to the duplexer 2 RX0/RX1 to penetrating
The RX link of frequency module measures.
The utility model further includes another embodiment, and in the present embodiment, radio-frequency module to be tested is single channel, this reality
The structure of example is applied compared with a upper embodiment, is not necessarily to the third combiner, third attenuator and third RF switch.At this point,
The end radio-frequency module TX0/RX0 to be tested is connected with the end the duplexer TX0/RX0, the third combiner output end with it is described
The end duplexer RX0 is connected, and 1 output end of attenuator is connected with the first combiner input terminal, remaining structure and upper one is in fact
It is identical to apply example, principle effect is also identical, and details are not described herein.
The utility model can select appropriate power, pad value according to the size of the output power of the radio-frequency module of test
Attenuator can increase and decrease signal source and RF switch according to the test request of different product RX link.
In conclusion the utility model reduces the frequency for using and replacing test port and test equipment of power meter,
Wiring is simplified, the level of skill requirement of tester is reduced, improves the reliability of test.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (5)
1. a kind of test macro for RF receiving and transmission module characterized by comprising the first signal source, second signal source,
Three signal sources, the first coupler, the second coupler, third coupler, the first RF switch, the second RF switch, the first decaying
Device, the second attenuator, adjustable numerical-control attenuator, the first combiner, the second combiner, the first power meter, the second power meter, duplex
Device and spectrum analyzer；
First signal source, second signal source, third signal source output end respectively with corresponding first coupler, the second coupling
The input terminal of clutch and third coupler is electrically connected, the coupled end and described second of second coupler and third coupler
RF switch input terminal is electrically connected, second RF switch common end and the first coupler coupled end and described first
RF switch input terminal is electrically connected, and first RF switch common end and the second attenuator input terminal are electrically connected,
The second attenuator output end and the second power meter input terminal are electrically connected；
The straight-through end of first coupler is electrically connected with the adjustable numerical-control attenuator input terminal, the adjustable numerical-control attenuator
The straight-through end of output end, second coupler and the straight-through end of the third coupler electrically connect with the second combiner input terminal
It connects, the second combiner output end and the end the duplexer RX0 are electrically connected；
The end radio-frequency module TX0/RX0 to be tested and the end the duplexer TX0/RX0 are electrically connected, the end the duplexer TX0 with
The first attenuator input terminal is electrically connected, and the first attenuator output end electrically connects with the first combiner input terminal
It connects, the first combiner output end electrically connects with the spectrum analyzer input terminal and the first power meter input terminal respectively
It connects.
2. the test macro according to claim 1 for RF receiving and transmission module, which is characterized in that further include third radio frequency
Switch, third attenuator and third combiner；
The end radio-frequency module TX1/RX1 to be tested and the end the duplexer TX1/RX1 are electrically connected, second combiner
Output end and the third combiner input terminal are electrically connected, the third combiner output end respectively with the duplexer RX0
End and the end RX1 are electrically connected, and the end the duplexer TX1 and the third attenuator input terminal are electrically connected, the third decaying
Device output end and the first attenuator output end and the third RF switch input terminal are electrically connected, and the third radio frequency is opened
It closes common end and the first combiner input terminal is electrically connected.
3. the test macro according to claim 1 or 2 for RF receiving and transmission module, which is characterized in that further include client
Control terminal.
4. the test macro according to claim 3 for RF receiving and transmission module, which is characterized in that first signal
Source, second signal source, third signal source, spectrum analyzer, the first power meter and the second power meter by GPIB turn USB module with
The communication of client's control terminal.
5. the test macro according to claim 1 for RF receiving and transmission module, which is characterized in that first coupling
The coefficient of coup of device, the second coupler and third coupler is 20dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920244.1U CN208939969U (en) | 2018-11-19 | 2018-11-19 | A kind of test macro for RF receiving and transmission module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821920244.1U CN208939969U (en) | 2018-11-19 | 2018-11-19 | A kind of test macro for RF receiving and transmission module |
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| Publication Number | Publication Date |
|---|---|
| CN208939969U true CN208939969U (en) | 2019-06-04 |
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ID=66727856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821920244.1U Active CN208939969U (en) | 2018-11-19 | 2018-11-19 | A kind of test macro for RF receiving and transmission module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111970065A (en) * | 2020-09-01 | 2020-11-20 | 南京派格测控科技有限公司 | Calibration method and device for radio frequency front-end module tester |
| CN113092859A (en) * | 2021-04-01 | 2021-07-09 | 北京航天计量测试技术研究所 | Switch matrix |
| CN115184881A (en) * | 2022-06-23 | 2022-10-14 | 石家庄银河微波技术有限公司 | Aging test bench, aging test method and aging test system for pulse responder |
-
2018
- 2018-11-19 CN CN201821920244.1U patent/CN208939969U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111970065A (en) * | 2020-09-01 | 2020-11-20 | 南京派格测控科技有限公司 | Calibration method and device for radio frequency front-end module tester |
| CN111970065B (en) * | 2020-09-01 | 2022-06-28 | 南京派格测控科技有限公司 | Calibration method and device for radio frequency front-end module tester |
| CN113092859A (en) * | 2021-04-01 | 2021-07-09 | 北京航天计量测试技术研究所 | Switch matrix |
| CN115184881A (en) * | 2022-06-23 | 2022-10-14 | 石家庄银河微波技术有限公司 | Aging test bench, aging test method and aging test system for pulse responder |
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