CN206743258U - A kind of multicarrier intermodulation test system - Google Patents
A kind of multicarrier intermodulation test system Download PDFInfo
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- CN206743258U CN206743258U CN201720496374.6U CN201720496374U CN206743258U CN 206743258 U CN206743258 U CN 206743258U CN 201720496374 U CN201720496374 U CN 201720496374U CN 206743258 U CN206743258 U CN 206743258U
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Abstract
The utility model provides a kind of multicarrier intermodulation test system,Including 3db electric bridge combining modules,Cavity combiner combining module,Four frequency carrier modules,B1 intermodulation modules,B2 intermodulation modules,Control module and host computer,Wherein,3db electric bridge combining modules,Cavity combiner combining module and four frequency carrier modules are built into multicarrier intermodulation test platform with B1 intermodulation module or B2 intermodulation modules respectively,To test the reflection of 3 15 ranks and transmission intermodulation product,Control module is used for the switching for controlling RF switch,The switching for the test pattern that host computer reflects/transmitted by controlling the control module to carry out,The utility model can be realized in transmitted passband 2160MHz 2210MHz frequency ranges,3 to 15 rank intermodulation testings of the intermodulation received passband in 1810MHz 2110MHz frequency ranges,Part port peak power 200W to be measured,The PIM characteristic research under the conditions of different input power can be met.
Description
Technical field
It the utility model is related to multicarrier intermodulation technical field of measurement and test, and in particular to a kind of multicarrier intermodulation test system.
Background technology
In Modern Communication System, such as GSM, TD-SCDMA, WCDMA.When the carrier signal of multiple frequencies passes through
During passive device, intermodulation distortion can be all produced.Such as antenna, cable, wave filter, duplexer, isolator passive device, due to it
What is mechanically connected is unreliable, and using the material with hysteresis characteristic, the reason such as the contact surface being stained, the signal of different frequency is not
With material junction non-linear frequency mixing, the intermodulation product of different amplitudes is produced, and these intermodulation distortion signals show as communicating
Interference signal in frequency band, decline the signal to noise ratio of system, have a strong impact on the capacity and quality of communication system.
Utility model content
In order to solve the above-mentioned technical problem, this application provides a kind of multicarrier intermodulation test system, in power amplifier frequency range and
In output power range, power margin test and the intermodulation testing of other frequency ranges can be flexibly carried out.
In order to solve the above technical problems, the application is achieved using following technical scheme：
A kind of multicarrier intermodulation test system, including 3db electric bridge combinings module, cavity combiner combining module, four frequencies carry
Ripple module, B1 intermodulation module, B2 intermodulation module, control module and host computer, wherein, the 3db electric bridges combining module, cavity
Combiner combining module and four frequency carrier modules are built into multicarrier intermodulation with the B1 intermodulation module or B2 intermodulation modules respectively
Test platform, to test the reflection of 3,5,7,9,11,13,15 ranks and transmission intermodulation product, the control module is used to control radio frequency
The switching of switch, the switching for the test pattern that the host computer reflects/transmitted by controlling the control module to carry out.
Further, the 3db electric bridges combining module includes the first PC, the first signal source, secondary signal source, first micro-
Power Amplifier, the second microwave power amplifier, the first coupler, the second coupler, 3dB electric bridges, the first high power load,
Second high power load, the first bandpass filter, the second bandpass filter, first duplexer, the second duplexer, the first radio frequency are opened
Pass, the first power meter, the second power meter, the first combiner, the first low-noise amplifier, the first frequency spectrograph and the first data are adopted
Collecting system, wherein,
First signal source passes sequentially through first microwave power amplifier, the first coupler is connected to the 3db
The input of electric bridge, the secondary signal source passes sequentially through second microwave power amplifier, the second coupler is connected to institute
The input of 3db electric bridges is stated, meanwhile, the coupled end of first coupler connects first power meter, second coupling
The coupled end of device connects second power meter, and an output end of the 3dB electric bridges passes through first bandpass filter, institute
First duplexer connected with passive measured device DUT is stated, another output end connection described first of the 3dB electric bridges is high-power negative
Carry, the receiving terminal of the first duplexer connects the first passage of first RF switch, passive measured device DUT connections institute
State the test lead of the second duplexer, the transmitting terminal of second duplexer connects second high power load, described second pair
The receiving terminal of work device connects the second channel of first RF switch, the third channel connected with passive of first RF switch
Measured piece, the first RF switch common port connect the second bandpass filter input, second bandpass filter
Output end connects the first combiner input, and the output end of first combiner connects first low noise and put all the way
The input of big device, the input of output end connection first frequency spectrograph of first low-noise amplifier, described first
Frequency spectrograph is analyzed and processed to the inter-modulated signal received, and intermodulation product is uploaded on described by first PC
Position machine, the output end another way of first combiner are directly connected to first data collecting system, and intermodulation product passes through institute
State the first PC and be uploaded to host computer.
Further, the cavity combiner combining module includes the second PC, the 3rd signal source, the 4th signal source, the
Three microwave power amplifiers, the 4th microwave power amplifier, the 3rd coupler, the 4th coupler, cavity combiner, the third-largest work(
Rate load, the 3rd bandpass filter, the 4th bandpass filter, the 3rd duplexer, the 4th duplexer, the second RF switch, the 3rd
Power meter, the 4th power meter, the second combiner, the second low-noise amplifier, the second frequency spectrograph and the second data collecting system,
Wherein,
3rd signal source passes sequentially through the 3rd microwave power amplifier, the 3rd coupler is connected to the cavity
The input of combiner, the 4th signal source passes sequentially through the 4th microwave power amplifier, the 4th coupler is connected to
The input of the cavity combiner, meanwhile, coupled end connection the 3rd power meter of the 3rd coupler, the described 4th
The coupled end of coupler connects the 4th power meter, and the cavity combiner passes sequentially through the 3rd bandpass filter, institute
The 3rd duplexer connected with passive measured device DUT is stated, the receiving terminal of the 3rd duplexer connects second RF switch
First passage, the test lead of passive measured device DUT connections the 4th duplexer, the transmitting terminal connection of the 4th duplexer
The third-largest power termination, the receiving terminal of the 4th duplexer connects the second channel of second RF switch, described
The third channel connected with passive measured piece of second RF switch, the second RF switch common port connect the 4th band logical filter
Ripple device input, the 4th bandpass filter output end connect the second combiner input, second combiner
Output end connects the input of second low-noise amplifier, the output end connection institute of second low-noise amplifier all the way
The input of the second frequency spectrograph is stated, second frequency spectrograph analyzes and processes to the inter-modulated signal received, and by intermodulation knot
Fruit is uploaded to the host computer by second PC, and the output end another way of second combiner is directly connected to described
Two data collecting systems, intermodulation product are uploaded to host computer by second PC.
Further, the four frequencies carrier module includes the 3rd PC, the 5th signal source, the 6th signal source, the 7th signal
It is source, the 8th signal source, the 5th microwave power amplifier, the 6th microwave power amplifier, the 7th microwave power amplifier, the 8th micro-
Power Amplifier, the 5th coupler, the 6th coupler, the 7th coupler, the 8th coupler, four frequency combiners, the fourth-largest work(
Rate load, the 5th bandpass filter, the 6th bandpass filter, the 5th duplexer, the 6th duplexer, the 3rd RF switch, the 5th
Power meter, the 6th power meter, the 7th power meter, the 8th power meter, the 3rd combiner, the 3rd low-noise amplifier, the 3rd frequency spectrum
Instrument and the 3rd data collecting system, wherein,
5th signal source passes sequentially through the 5th microwave power amplifier, the 5th coupler is connected to four frequency
The input of combiner, the 6th signal source passes sequentially through the 6th microwave power amplifier, the 6th coupler is connected to
The input of four frequency combiner, the 7th signal source pass sequentially through the 7th microwave power amplifier, the 7th coupling
Device is connected to the input of four frequency combiner, the 8th signal source pass sequentially through the 8th microwave power amplifier,
8th coupler is connected to the input of four frequency combiner, meanwhile, the coupled end of the 5th coupler connection described the
Five power meters, the coupled end of the 6th coupler connect the 6th power meter, the coupled end connection of the 7th coupler
7th power meter, the coupled end of the 8th coupler connect the 8th power meter, and four frequency combiner leads to successively
Cross the 5th bandpass filter, the 5th duplexer connected with passive measured device DUT, the receiving terminal of the 5th duplexer
The first passage of the 3rd RF switch is connected, the test lead of passive measured device DUT connections the 6th duplexer is described
The transmitting terminal of 6th duplexer connects the fourth-largest power termination, and the receiving terminal connection the described 3rd of the 6th duplexer is penetrated
The second channel of frequency switch, the third channel connected with passive measured piece of the 3rd RF switch, the 3rd RF switch are public
End connects the 6th bandpass filter input altogether, and it is defeated that the 6th bandpass filter output end connects the 3rd combiner
Enter end, the output end of the 3rd combiner connects the 3rd low-noise amplifier input, the 3rd low noise all the way
The output end of amplifier connects the input of the 3rd frequency spectrograph, and the 3rd frequency spectrograph is carried out to the inter-modulated signal received
Analyzing and processing, and intermodulation product is uploaded to the host computer, the output end of the 3rd combiner by the 3rd PC
Another way is directly connected to the 3rd data collecting system, and intermodulation product is uploaded to host computer by the 3rd PC.
Compared with prior art, the technical scheme that the application provides, the technique effect or advantage having are：The multicarrier is mutual
Commissioning test system is based on project Research Requirements, considers traditional PI M (passive intermodulation, Passive Inter Modulation)
Passive intermodulation testing requirements under measurement, multicarrier state, narrow frequency interval and modulation condition, using standard signal source, frequency
The equipment for customizing such as the standard devices such as spectrometer, power meter and high power amplifier, low intermodulation passive module is integrated into intermodulation testing and put down
Platform, realize in transmitted passband 2160MHz-2210MHz frequency ranges, 3 ranks of the intermodulation received passband in 1810MHz-2110MHz frequency ranges
To 15 rank intermodulation testings.Part port peak power 200W to be measured, it can meet that the PIM characteristics under the conditions of different input power are ground
Study carefully.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is 3db electric bridge combining modular structure block diagrams；
Fig. 3 is cavity combiner combining modular structure block diagram；
Fig. 4 is four frequency carrier module structured flowcharts.
Embodiment
In order to solve the above-mentioned technical problem, this application provides a kind of multicarrier intermodulation test system, in power amplifier frequency range and
In output power range, power margin test and the intermodulation testing of other frequency ranges can be flexibly carried out.
It is right below in conjunction with Figure of description and specific embodiment in order to be better understood from above-mentioned technical proposal
Above-mentioned technical proposal is described in detail.
Embodiment
A kind of multicarrier intermodulation test system, as shown in figure 1, including 3db electric bridge combinings module, cavity combiner combining mould
Block, four frequency carrier modules, B1 intermodulation module, B2 intermodulation module, control module and host computer, wherein, the 3db electric bridges combining
Module, cavity combiner combining module and four frequency carrier modules are built into more with the B1 intermodulation module or B2 intermodulation modules respectively
Carrier wave intermodulation testing platform, it is used for testing the reflection of 3,5,7,9,11,13,15 ranks and transmission intermodulation product, the control module
The switching of RF switch is controlled, the test pattern that the host computer reflects/transmitted by controlling the control module to carry out is cut
Change.
As shown in Fig. 2 the 3db electric bridges combining module includes the first PC 101, the first signal source 201, secondary signal source
202nd, the first microwave power amplifier 301, the second microwave power amplifier 302, the first coupler 401, the second coupler 402,
3dB electric bridges 501, the first high power load 601, the second high power load 602, the first bandpass filter 701, the second bandpass filtering
Device 702, first duplexer 801, the second duplexer 802, the first RF switch 901, the first power meter 1001, the second power meter
1002nd, the first combiner 1101, the first low-noise amplifier 1201, the first frequency spectrograph 1301 and the first data collecting system
1401, wherein,
First signal source 201 passes sequentially through first microwave power amplifier 301, the first coupler 401 connects
To the input of the 3db electric bridges 501, the secondary signal source 202 pass sequentially through second microwave power amplifier 302,
Second coupler 402 is connected to the input of the 3db electric bridges 501, meanwhile, the coupled end connection of first coupler 401
First power meter 1001, the coupled end of second coupler 402 connect second power meter 1002, the 3dB electricity
One output end of bridge 501 passes through first bandpass filter 701, the connected with passive measured device of the first duplexer 801
DUT, another output end of the 3dB electric bridges 501 connect first high power load 601, the first duplexer 801
Receiving terminal connects the first passage of first RF switch 901, passive measured device DUT connections second duplexer 802
Test lead, the transmitting terminal of second duplexer 802 connects second high power load 602, second duplexer 802
Receiving terminal connect the second channel of first RF switch 901, the third channel connection nothing of first RF switch 901
Source measured piece, the common port of the first RF switch 901 connect the input of the second bandpass filter 702, second band
The output end of bandpass filter 702 connects the input of the first combiner 1101, and the output end of first combiner 1101 is all the way
The input of first low-noise amplifier 1201 is connected, described in the output end connection of first low-noise amplifier 1201
The input of first frequency spectrograph 1301, first frequency spectrograph 1301 analyze and process to the inter-modulated signal received, and will
Intermodulation product is uploaded to the host computer, the output end another way of first combiner 1101 by first PC 101
First data collecting system 1401 is directly connected to, intermodulation product is uploaded to host computer by first PC 101.
First microwave power amplifier 301 transmits the signal after amplification to institute by first coupler 401
3dB electric bridges 501 are stated, second microwave power amplifier 302 transmits the signal after amplification by second coupler 402
To the 3dB electric bridges 501, the signal after first power meter 1001 couples to first coupler 401 samples, institute
The signal after the second power meter 1002 couples second coupler 402 is stated to sample；The input of the 3dB electric bridges 501
The two paths of signals received is carried out power combing processing by end, and the signal after synthesis is transmitted to described by an output end
The input of first bandpass filter 701, signal is transferred to described by the output end of first bandpass filter 701
One duplexer 801, the first duplexer 801 are transmitted the composite signal received as test signal to passive measured device
DUT, another output end of the 3dB electric bridges 501 connect the input of first high power load 601, carry out power suction
Receive and match；Above-mentioned test signal after passive measured device DUT, along passive measured device DUT transmit to described the by a part
The test lead of two duplexers 802, and inhaled by the transmitting terminal of second duplexer 802 by second high power load 602
Receive；Another part test signal reflexes to its receiving terminal along the test lead of the first duplexer 801 respectively, along described second pair
The test lead of work device 802 reflexes to its receiving terminal, forms transmitting intermodulation product.Above-mentioned 3dB electric bridges synthetic schemes support test 3,
5th, the reflection of 7,9,11,13,15 ranks and transmission intermodulation product.
Synthesized using 3dB electric bridges：
1st, power is measured：Two-way power is minimum+37dBm to maximum+50dBm (100W)
2nd, exponent number is measured：3-15 ranks.
As shown in figure 3, the cavity combiner combining module includes the second PC 102, the 3rd signal source the 203, the 4th is believed
Number source 204, the 3rd microwave power amplifier 303, the 4th microwave power amplifier 304, the 3rd coupler 403, the 4th coupler
404th, cavity combiner 502, the third-largest power termination 603, the 3rd bandpass filter 703, the 4th bandpass filter the 704, the 3rd
Duplexer 803, the 4th duplexer 804, the second RF switch 902, the 3rd power meter 1003, the 4th power meter 1004, second close
Road device 1102, the second low-noise amplifier 1202, the second frequency spectrograph 1302 and the second data collecting system 1402, wherein,
3rd signal source 203 passes sequentially through the 3rd microwave power amplifier 303, the 3rd coupler 403 connects
To the input of the cavity combiner 502, the 4th signal source 204 passes sequentially through the 4th microwave power amplifier
304th, the 4th coupler 404 is connected to the input of the cavity combiner 502, meanwhile, the coupling of the 3rd coupler 403
End connects the 3rd power meter 1003, and the coupled end of the 4th coupler 404 connects the 4th power meter 1004, described
Cavity combiner 502 passes sequentially through the 3rd bandpass filter 703, the connected with passive measured device of the 3rd duplexer 803
DUT, the receiving terminal of the 3rd duplexer 803 connect the first passage of second RF switch 902, passive measured device
The test lead of DUT connections the 4th duplexer 804, the transmitting terminal of the 4th duplexer 804 connect the third-largest power
Load 603, the receiving terminal of the 4th duplexer 804 connect the second channel of second RF switch 902, and described second penetrates
The third channel connected with passive measured piece of frequency switch 902, the common port of the second RF switch 902 connect the 4th band logical filter
The input of ripple device 704, the output end of the 4th bandpass filter 704 connect the input of the second combiner 1102, and described the
The output end of two combiners 1102 connects the input of second low-noise amplifier 1202 all the way, and second low noise is put
The output end of big device 1202 connects the input of second frequency spectrograph 1302, and second frequency spectrograph 1302 is mutual to what is received
Adjust signal to be analyzed and processed, and intermodulation product is uploaded to the host computer by second PC 102, described second closes
The output end another way of road device 1102 is directly connected to second data collecting system 1402, and intermodulation product passes through the 2nd PC
Machine 102 is uploaded to host computer.
The two paths of signals received is carried out power combing processing by the input of the cavity combiner 502, and will synthesis
Signal afterwards is transmitted to the input of the 3rd bandpass filter 703, passes through the output end of the 3rd bandpass filter 703
Signal is transferred to the 3rd duplexer 803, the 3rd duplexer 803 is using the composite signal received as test signal
Transmit to passive measured device DUT；
Above-mentioned test signal after passive measured device DUT, along passive measured device DUT transmit to the described 4th by a part
The test lead of duplexer 804, and absorbed by the transmitting terminal of the 4th duplexer 804 by the third-largest power termination 603；
Another part test signal reflexes to its receiving terminal along the test lead of the 3rd duplexer 803 respectively, along the described 4th duplex
The test lead of device 804 reflexes to its receiving terminal, forms transmitting intermodulation product；
The first passage of receiving terminal connection second RF switch 902 of 3rd duplexer 803, described 4th pair
The receiving terminal of work device 804 connects the second channel of second RF switch 901, the threeway of second RF switch 901
Road connects measured piece DUT duplexer RX ports (if measured piece is duplexer)；
The input of common port connection the 4th bandpass filter 704 of second RF switch 902, the described 4th
The output end of bandpass filter 704 connects the input of second combiner 1102, the output of second combiner 1102
End connects the input of the low-noise amplifier 1202 all the way, the output end connection of the low-noise amplifier 1202 described the
The input of two frequency spectrographs 1302, second frequency spectrograph 1302 analyze and process to the inter-modulated signal received, intermodulation knot
Fruit is uploaded to host computer by second PC 102；The output end another way of second combiner 1102 is directly connected to institute
The second data collecting system 1402 is stated, intermodulation product is uploaded to host computer by second PC 102.The cavity combiner
Synthetic schemes supports the reflection of test 5-15 ranks and transmission intermodulation product.
Synthesized using cavity combiner：
1st, power is measured：Two-way power is minimum+37dBm to maximum+53dBm (200W)
2nd, exponent number is measured：The rank of 5 rank -15.
As shown in figure 4, the four frequencies carrier module includes the 3rd PC 103, the 5th signal source 205, the 6th signal source
206th, the 7th signal source 207, the 8th signal source 208, the 5th microwave power amplifier 305, the 6th microwave power amplifier 306,
7th microwave power amplifier 307, the 8th microwave power amplifier 308, the 5th coupler 405, the 6th coupler the 406, the 7th
Coupler 407, the 8th coupler 408, four frequency combiners 503, the fourth-largest power termination 604, the 5th bandpass filter 705,
Six bandpass filters 706, the 5th duplexer 805, the 6th duplexer 806, the 3rd RF switch 903, the 5th power meter 1005,
Six power meters 1006, the 7th power meter 1007, the 8th power meter 1008, the 3rd combiner 1103, the 3rd low-noise amplifier
1203rd, the 3rd frequency spectrograph 1303 and the 3rd data collecting system 1403, wherein,
5th signal source 205 passes sequentially through the 5th microwave power amplifier 305, the 5th coupler 405 connects
To the input of four frequency combiner 503, the 6th signal source 206 passes sequentially through the 6th microwave power amplifier
306th, the 6th coupler 406 is connected to the input of four frequency combiner 503, and the 7th signal source 207 passes sequentially through institute
State the 7th microwave power amplifier 307, the 7th coupler 407 is connected to the input of four frequency combiner 503, the described 8th
Signal source 208 passes sequentially through the 8th microwave power amplifier 308, the 8th coupler 408 is connected to four frequency combiner
503 input, meanwhile, the coupled end of the 5th coupler 405 connects the 5th power meter 1005, the 6th coupling
The coupled end of device 406 connects the 6th power meter 1006, and the coupled end of the 7th coupler 407 connects the 7th power
Meter 1007, the coupled end of the 8th coupler 408 connect the 8th power meter 1008, and four frequency combiner 503 is successively
Pass through the 5th bandpass filter 705, the connected with passive measured device DUT of the 5th duplexer 805, the 5th duplexer
805 receiving terminal connects the first passage of the 3rd RF switch 903, passive measured device DUT connections the 6th duplex
The test lead of device 806, the transmitting terminal of the 6th duplexer 806 connect the fourth-largest power termination 604, the 6th duplex
The receiving terminal of device 806 connects the second channel of the 3rd RF switch 903, the third channel of the 3rd RF switch 903
Connected with passive measured piece, the common port of the 3rd RF switch 903 connects the input of the 6th bandpass filter 706, described
The output end of 6th bandpass filter 706 connects the input of the 3rd combiner 1103, the output of the 3rd combiner 1103
End connects the input of the 3rd low-noise amplifier 1203 all the way, and the output end of the 3rd low-noise amplifier 1203 connects
The input of the 3rd frequency spectrograph 1303 is connect, the 3rd frequency spectrograph 1303 is carried out at analysis to the inter-modulated signal received
Reason, and intermodulation product is uploaded to the host computer, the output end of the 3rd combiner 1103 by the 3rd PC 103
Another way is directly connected to the 3rd data collecting system 1403, and intermodulation product is uploaded to upper by the 3rd PC 103
Machine.
The four road signals received are carried out power combing processing by the input of four frequency combiner 503, and will synthesis
Signal afterwards is transmitted to the input of the 5th bandpass filter 705, passes through the output end of the 5th bandpass filter 705
Signal is transmitted to the 5th duplexer 805, the 5th duplexer 805 and transmitted the composite signal received as test signal
To passive measured device DUT；
Above-mentioned test signal after passive measured device DUT, along passive measured device DUT transmit to the described 6th by a part
The test lead of duplexer 806, and absorbed by the transmitting terminal of the 6th duplexer 806 by the fourth-largest power termination 604；
Another part test signal reflexes to its receiving terminal along the test lead of the 5th duplexer 805 respectively, along the described 6th duplex
The test lead of device 806 reflexes to its receiving terminal, forms transmitting intermodulation product；
The first passage of receiving terminal connection the 3rd RF switch 903 of 5th duplexer 805, described 6th pair
The receiving terminal of work device 806 connects the second channel of the 3rd RF switch 903, the threeway of the 3rd RF switch 903
Road connects measured piece duplexer RX ports (if measured piece is duplexer)；
The common port of 3rd RF switch 903 connects the input of the 6th bandpass filter 706, the 6th band logical
The output end of wave filter 706 connects the input of the 3rd combiner 1103, and the output end of the 3rd combiner 1103 connects all the way
Connect the input of the 3rd low-noise amplifier 1203, the output end connection of the 3rd low-noise amplifier 1203 described the
The input of three frequency spectrographs 1303, the 3rd frequency spectrograph 1303 analyze and process to the inter-modulated signal received, and will be mutual
Result is adjusted to be uploaded to the host computer by the 3rd PC 103, the output end another way of the 3rd combiner 1103 is straight
The 3rd data collecting system 1403 is connect in succession, and intermodulation product is uploaded to host computer by the 3rd PC 103.Described four
Frequency combiner synthetic schemes supports the reflection of 3,5,7,9,11,13,15 ranks of test and transmission intermodulation product.
Synthesized using four frequency combiners：
1st, four road-load Bo Mei roads input peak power minimum+37dBm to maximum 46dBm, the 1st road and the to part port to be measured
Four roads are not less than 53dBm to part port to be measured peak power.
2nd, exponent number is measured：3-15 ranks
B1 module testing exponent numbers：3-5 ranks
B2 module testing exponent numbers：5-15 ranks
The utility model considers that system is using 3dB electricity comprising the PIM characteristic research under narrow frequency interval in project research
Bridge module completes the synthesis of two-way carrier wave, and backup cavity combiner module, switches over as needed.Involve modulation for overloading
PIM characteristic research demands under state, four tunnels synthesis multiplexer and test software are individually developed, as four tunnel overloadings of extension
Ripple intermodulation testing uses.Low-and high-temp test facility is equipped with simultaneously, the PIM detections under high and low temperature state can be completed.
In above-described embodiment of the application, by providing a kind of multicarrier intermodulation test system, including 3db electric bridge combining moulds
Block, cavity combiner combining module, four frequency carrier modules, B1 intermodulation module, B2 intermodulation module, control module and host computer,
Wherein, 3db electric bridges combining module, cavity combiner combining module and four frequency carrier modules respectively with B1 intermodulation module or B2 intermodulation
Module is built into multicarrier intermodulation test platform, and to test the reflection of 3-15 ranks and transmission intermodulation product, control module is used to control
The switching of RF switch, the switching for the test pattern that host computer reflects/transmitted by controlling the control module to carry out, this practicality
New Energy realizes in transmitted passband 2160MHz-2210MHz frequency ranges that intermodulation received passband is in 1810MHz-2110MHz frequency ranges
3 to 15 rank intermodulation testings, part port peak power 200W to be measured, the PIM researchs under the conditions of different input power can be met.
It should be pointed out that it is that limitation of the present utility model, the utility model are also not limited to that described above, which is not,
The example above, what those skilled in the art were made in essential scope of the present utility model changes, is modified, adding
Add or replace, should also belong to the scope of protection of the utility model.
Claims (4)
1. a kind of multicarrier intermodulation test system, it is characterised in that including 3db electric bridge combinings module, cavity combiner combining mould
Block, four frequency carrier modules, B1 intermodulation module, B2 intermodulation module, control module and host computer, wherein, the 3db electric bridges combining
Module, cavity combiner combining module and four frequency carrier modules are built into more with the B1 intermodulation module or B2 intermodulation modules respectively
Carrier wave intermodulation testing platform, it is used for testing the reflection of 3,5,7,9,11,13,15 ranks and transmission intermodulation product, the control module
The switching of RF switch is controlled, the test pattern that the host computer reflects/transmitted by controlling the control module to carry out is cut
Change.
2. multicarrier intermodulation test system according to claim 1, it is characterised in that the 3db electric bridges combining module bag
Include the first PC (101), the first signal source (201), secondary signal source (202), the first microwave power amplifier (301), second
It is microwave power amplifier (302), the first coupler (401), the second coupler (402), 3dB electric bridges (501), first high-power negative
Carry (601), the second high power load (602), the first bandpass filter (701), the second bandpass filter (702), the first duplex
Device (801), the second duplexer (802), the first RF switch (901), the first power meter (1001), the second power meter (1002),
First combiner (1101), the first low-noise amplifier (1201), the first frequency spectrograph (1301) and the first data collecting system
(1401), wherein,
First signal source (201) passes sequentially through first microwave power amplifier (301), the first coupler (401) even
The input of the 3db electric bridges (501) is connected to, the secondary signal source (202) passes sequentially through the second microwave power amplification
Device (302), the second coupler (402) are connected to the input of the 3db electric bridges (501), meanwhile, first coupler
(401) coupled end connects first power meter (1001), the coupled end connection described second of second coupler (402)
Power meter (1002), an output end of the 3dB electric bridges (501) pass through first bandpass filter (701), described first
Duplexer (801) connected with passive measured device DUT, another output end of the 3dB electric bridges (501) connect the first big work(
Rate loads (601), and the receiving terminal of the first duplexer (801) connects the first passage of first RF switch (901), nothing
The test lead of source measured device DUT connections second duplexer (802), the transmitting terminal connection of second duplexer (802)
Second high power load (602), the receiving terminal of second duplexer (802) connect first RF switch (901)
Second channel, the third channel connected with passive measured piece of first RF switch (901), first RF switch
(901) common port connects the second bandpass filter (702) input, and the second bandpass filter (702) output end connects
The first combiner (1101) input is connect, the output end of first combiner (1101) connects first low noise all the way
The input of acoustic amplifier (1201), the output end of first low-noise amplifier (1201) connect first frequency spectrograph
(1301) input, first frequency spectrograph (1301) analyze and process to the inter-modulated signal received, and by intermodulation knot
Fruit is uploaded to the host computer by first PC (101), and the output end another way of first combiner (1101) is straight
First data collecting system (1401) is connect in succession, and intermodulation product is uploaded to host computer by first PC (101).
3. multicarrier intermodulation test system according to claim 1, it is characterised in that the cavity combiner combining module
Including the second PC (102), the 3rd signal source (203), the 4th signal source (204), the 3rd microwave power amplifier (303),
It is four microwave power amplifiers (304), the 3rd coupler (403), the 4th coupler (404), cavity combiner (502), the third-largest
Power termination (603), the 3rd bandpass filter (703), the 4th bandpass filter (704), the 3rd duplexer (803), the 4th pair
Work device (804), the second RF switch (902), the 3rd power meter (1003), the 4th power meter (1004), the second combiner
(1102), the second low-noise amplifier (1202), the second frequency spectrograph (1302) and the second data collecting system (1402), its
In,
3rd signal source (203) passes sequentially through the 3rd microwave power amplifier (303), the 3rd coupler (403) even
The input of the cavity combiner (502) is connected to, the 4th signal source (204) passes sequentially through the 4th microwave power and put
Big device (304), the 4th coupler (404) are connected to the input of the cavity combiner (502), meanwhile, the 3rd coupling
The coupled end of device (403) connects the 3rd power meter (1003), the coupled end connection of the 4th coupler (404) described the
Four power meters (1004), the cavity combiner (502) pass sequentially through the 3rd bandpass filter (703), described 3rd pair
Work device (803) connected with passive measured device DUT, the receiving terminal of the 3rd duplexer (803) connect second RF switch
(902) first passage, the test lead of passive measured device DUT connections the 4th duplexer (804), the 4th duplexer
(804) transmitting terminal connects the third-largest power termination (603), described in the receiving terminal connection of the 4th duplexer (804)
The second channel of second RF switch (902), the third channel connected with passive measured piece of second RF switch (902), institute
State the second RF switch (902) common port and connect the 4th bandpass filter (704) input, the 4th bandpass filter
(704) output end connects the second combiner (1102) input, and the output end of second combiner (1102) connects all the way
Meet the input of second low-noise amplifier (1202), the output end connection institute of second low-noise amplifier (1202)
The input of the second frequency spectrograph (1302) is stated, second frequency spectrograph (1302) is carried out at analysis to the inter-modulated signal received
Reason, and intermodulation product is uploaded to the host computer by second PC (102), second combiner (1102) it is defeated
Go out to hold another way to be directly connected to second data collecting system (1402), intermodulation product passes through on second PC (102)
Reach host computer.
4. multicarrier intermodulation test system according to claim 1, it is characterised in that the four frequencies carrier module includes the
Three PCs (103), the 5th signal source (205), the 6th signal source (206), the 7th signal source (207), the 8th signal source (208),
5th microwave power amplifier (305), the 6th microwave power amplifier (306), the 7th microwave power amplifier (307), the 8th
Microwave power amplifier (308), the 5th coupler (405), the 6th coupler (406), the 7th coupler (407), the 8th coupling
Device (408), four frequency combiners (503), the fourth-largest power termination (604), the 5th bandpass filter (705), the 6th bandpass filtering
Device (706), the 5th duplexer (805), the 6th duplexer (806), the 3rd RF switch (903), the 5th power meter (1005),
Six power meters (1006), the 7th power meter (1007), the 8th power meter (1008), the 3rd combiner (1103), the 3rd low noise
Amplifier (1203), the 3rd frequency spectrograph (1303) and the 3rd data collecting system (1403), wherein,
5th signal source (205) passes sequentially through the 5th microwave power amplifier (305), the 5th coupler (405) even
The input of four frequency combiner (503) is connected to, the 6th signal source (206) passes sequentially through the 6th microwave power and put
Big device (306), the 6th coupler (406) are connected to the input of four frequency combiner (503), the 7th signal source
(207) the 7th microwave power amplifier (307) is passed sequentially through, the 7th coupler (407) is connected to four frequency combiner
(503) input, the 8th signal source (208) pass sequentially through the 8th microwave power amplifier (308), the 8th coupling
Device (408) is connected to the input of four frequency combiner (503), meanwhile, the coupled end connection of the 5th coupler (405)
5th power meter (1005), the coupled end of the 6th coupler (406) connects the 6th power meter (1006), described
The coupled end of 7th coupler (407) connects the 7th power meter (1007), and the coupled end of the 8th coupler (408) connects
The 8th power meter (1008) is connect, four frequency combiner (503) passes sequentially through the 5th bandpass filter (705), institute
State the 5th duplexer (805) connected with passive measured device DUT, the receiving terminal connection the described 3rd of the 5th duplexer (805)
The first passage of RF switch (903), the test lead of passive measured device DUT connections the 6th duplexer (806), described
The transmitting terminal of six duplexers (806) connects the fourth-largest power termination (604), the receiving terminal of the 6th duplexer (806)
Connect the second channel of the 3rd RF switch (903), the third channel connected with passive quilt of the 3rd RF switch (903)
Part is surveyed, the 3rd RF switch (903) common port connects the 6th bandpass filter (706) input, the 6th band
Bandpass filter (706) output end connects the 3rd combiner (1103) input, the output of the 3rd combiner (1103)
End connects the input of the 3rd low-noise amplifier (1203), the output of the 3rd low-noise amplifier (1203) all the way
End connects the input of the 3rd frequency spectrograph (1303), and the 3rd frequency spectrograph (1303) is carried out to the inter-modulated signal received
Analyzing and processing, and intermodulation product is uploaded to the host computer, the 3rd combiner by the 3rd PC (103)
(1103) output end another way is directly connected to the 3rd data collecting system (1403), and intermodulation product passes through the 3rd PC
Machine (103) is uploaded to host computer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601732A (en) * | 2019-09-20 | 2019-12-20 | 国脉科技股份有限公司 | Optical fiber distribution high-frequency intelligent double-output system |
| CN110716095A (en) * | 2019-09-05 | 2020-01-21 | 北京航空航天大学 | Multi-state measurement method and device for passive intermodulation nonlinear characteristic parameters |
| CN111193555A (en) * | 2019-07-08 | 2020-05-22 | 杭州紫光网络技术有限公司 | Multi-frequency concurrent intermodulation test system |
| CN113612553A (en) * | 2021-08-04 | 2021-11-05 | 山东大学 | Receiver radio frequency link nonlinear effect multi-parameter test platform |
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- 2017-05-07 CN CN201720496374.6U patent/CN206743258U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193555A (en) * | 2019-07-08 | 2020-05-22 | 杭州紫光网络技术有限公司 | Multi-frequency concurrent intermodulation test system |
| CN111193555B (en) * | 2019-07-08 | 2022-04-15 | 杭州紫光网络技术有限公司 | Multi-frequency concurrent intermodulation test system |
| CN110716095A (en) * | 2019-09-05 | 2020-01-21 | 北京航空航天大学 | Multi-state measurement method and device for passive intermodulation nonlinear characteristic parameters |
| CN110601732A (en) * | 2019-09-20 | 2019-12-20 | 国脉科技股份有限公司 | Optical fiber distribution high-frequency intelligent double-output system |
| CN110601732B (en) * | 2019-09-20 | 2021-07-30 | 国脉科技股份有限公司 | Optical fiber distribution high-frequency intelligent double-output system |
| CN113612553A (en) * | 2021-08-04 | 2021-11-05 | 山东大学 | Receiver radio frequency link nonlinear effect multi-parameter test platform |
| CN113612553B (en) * | 2021-08-04 | 2022-04-29 | 山东大学 | Receiver radio frequency link nonlinear effect multi-parameter test platform |
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