CN108931704A - A kind of 32 ports band S parameter passive cross modulation test instrument - Google Patents
A kind of 32 ports band S parameter passive cross modulation test instrument Download PDFInfo
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- CN108931704A CN108931704A CN201810631827.0A CN201810631827A CN108931704A CN 108931704 A CN108931704 A CN 108931704A CN 201810631827 A CN201810631827 A CN 201810631827A CN 108931704 A CN108931704 A CN 108931704A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention discloses a kind of 32 ports band S parameter passive cross modulation test instrument, it is related to the intermodulation product of passive device and the testing field of S parameter, including emitter, reception device, 32 road RF switches, 64 road RF switches, 32 terminal port antennaes and vector network analyzer；The emitter output end connects 32 paths of 64 road RF switches, which connects the input terminal of reception device simultaneously；The 32 road channel COM feeder lines of 64 road RF switches connect the tested port of 32 terminal port antennaes；Another 32 paths of 64 road RF switches connect the input terminal of 32 road RF switches, the input terminal of the output end connected vector Network Analyzer of 32 road RF switches；The difunctional test of the present invention collects intermodulation testing and S parameter one；Connecting test improves testing efficiency；With frequency mode, frequency sweep mode, a Modulation；High integration, without constructing complicated test platform.
Description
Technical field
The present invention relates to the testing fields of the intermodulation product of passive device and S parameter, more particularly to a kind of 32 ports band S to join
Number passive cross modulation test instrument.
Background technique
Ordinary passive intermodulation testing instrument currently on the market is suitable only for the passive device of one to two single port of test
Intermodulation index, be not suitable for testing the intermodulation index of multiport passive device simultaneously, need the tested passive device of disassembly repeatedly
Connector and test cable, the carrying and company that test product will be mutual between intermodulation testing instrument and vector network analyzer
It connects, test, testing efficiency is low, and test result precision is low；
Therefore, be badly in need of now it is a kind of be not only capable of measuring the intermodulation index of passive device, but also be capable of measuring the S parameter of passive device and refer to
Target passive cross modulation test instrument.
Summary of the invention
The present invention provides a kind of 32 ports band S parameter passive cross modulation test instrument aiming at the problem that background technique, to realize both
It is capable of measuring the intermodulation index of passive device, and is capable of measuring the S parameter index of passive device.
To achieve the goals above, the present invention proposes a kind of 32 ports band S parameter passive cross modulation test instrument, including transmitting dress
It sets, reception device, 32 road RF switches, 64 road RF switches, 32 terminal port antennaes and vector network analyzer；
The emitter output end connects 32 paths of 64 road RF switches, which connects reception simultaneously
The input terminal of device；The 32 road channel COM feeder lines of 64 road RF switches connect the tested port of 32 terminal port antennaes；64 road radio frequencies are opened
Another 32 paths closed connect the input terminal of 32 road RF switches, the output end connected vector Network Analyzer of 32 road RF switches
Input terminal.
Preferably, the emitter, comprising: the first signal source, second signal source, the first power amplifier, second
Power amplifier, 3dB electric bridge, load, emission filter and 1 point of 32 power splitter；
The output end of first signal source connects the input terminal of the first power amplifier, the output end in second signal source
Connect the input terminal of the second power amplifier, the first input end of the output end connection 3dB electric bridge of the first power amplifier, second
Second input terminal of the output end connection 3dB electric bridge of power amplifier, the first output end of 3dB electric bridge connect load, 3dB electric bridge
Second output terminal connect emission filter, the output end of emission filter connects the input terminal of 1 point of 32 power splitter.
Preferably, the 32 road NC that the output end of 1 point of 32 power splitter connects 64 road RF switches by the port TX are logical
Road.
Preferably, the reception device, comprising: 1 point of 32 intermodulation RF switch, receiving filter and digital receiver mould
Block；
The 32 road NC that the input terminal of 1 point of 32 intermodulation RF switch passes through the port RX connection 64 road RF switches of connection
Channel；The input terminal of the output end connection receiving filter of 1 point of 32 intermodulation RF switch, the output end connection number of receiving filter
The input terminal of word receiver module.
Preferably, 32 terminal port antennaes, each port S parameter signal pass through the common end COM of 64 road RF switches
Mouth switches to the port NO of 64 road RF switches, then S parameter signal is sent to 32 road switching channels of 32 road RF switches, and 32
S parameter signal is sent to the test port of vector network analyzer by public port by road RF switch, for it to 32 ports
The S parameter of antenna is analyzed.
Preferably, the 3dB electric bridge is used to carry out received two paths of signals power combing, and the series connection of the first output end is negative
It is loaded into row power absorption, the transmitting signal after synthesis is transmitted to emission filter by second output terminal.
Preferably, the Digital receiver module, the inter-modulated signal for generating to 32 terminal port antennaes carry out sampling point
Analysis processing.
A kind of 32 port band S parameter passive cross modulation test instrument proposed by the invention, specific following advantages:
1, difunctional test collects intermodulation testing and S parameter one；
2, a connecting test improves testing efficiency；
3, there is point frequency mode, frequency sweep mode, Modulation；
4, high integration, without constructing complicated test platform.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is band S parameter passive cross modulation test instrument structural block diagram in 32 ports in an embodiment of the present invention；
Fig. 2 is emitter structural block diagram in an embodiment of the present invention；
Fig. 3 is reception device structural block diagram in an embodiment of the present invention；
Fig. 4 is band S parameter passive cross modulation test instrument circuit connection schematic diagram in 32 ports in an embodiment of the present invention；
Symbol description:
1- emitter, 2- reception device, the first signal source of 101-, 102- second signal source, the first power amplification of 201-
Device, the second power amplifier of 202-, 301-3dB electric bridge, 401- load, 501- emission filter, 502- receiving filter,
601-1 points of 32 power splitters；701-1 points of 32 intermodulation RF switches, the road 702-32 RF switch, the road 703-64 RF switch, 704-
32 terminal port antennaes, 801- Digital receiver module, 802- vector network analyzer；
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of 32 ports band S parameter passive cross modulation test instrument；
In a kind of preferred embodiment of the present invention, as shown in Figure 1, including emitter 1, reception device 2,32 road RF switches
702,64 road RF switches 703,32 terminal port antennaes 704 and vector network analyzer 802；1 output end of emitter connects
Connected 901,902,903,904,905,906,907,908,909,910,911,912,913,914,915,916,917,
918,919,920,921,922,923,924,925,926,927,928,929,930,931,64 road radio frequency of the port 932TX is opened
Close the 703 32 road channels NC, the 32 road channel NC by 901,902,903,904,905,906,907,908,909,910,
911、912、913、914、915、916、917、 918、919、920、921、922、923、924、925、926、927、928、929、
930, the 931, input terminal of the port 932RX connection reception device 2；The 32 road channel the COM feeder lines connection 32 of 64 road RF switches 703
The tested port of terminal port antennae 704；The 32 road channel NO 64 road RF switch, 703 Ling connects the input of 32 road RF switches 702
End, the input terminal of the output end connected vector Network Analyzer 802 of 32 road RF switches 702 analyze passive device measured piece S
Parameter mainly includes reflection parameters；
In a kind of preferred embodiment of the present invention, as shown in Fig. 2, the emitter 1, comprising: the first signal source 101,
Second signal source 102, the first power amplifier 201, the second power amplifier 202,3dB electric bridge 301,401 (impedances 50 of load
Ω/the 300W of resistance to power power absorption load), 32 power splitter 601 of emission filter 501 and 1 point (only embody function merotype, design
When carry out the power splitter that type selecting meets power requirement according to design requirement)；The output end connection first of first signal source 101
The input terminal of power amplifier 201, the output end in second signal source 102 connect the input terminal of the second power amplifier 202, the
The first input end of the output end connection 3dB electric bridge 301 of one power amplifier 201, the output end of the second power amplifier 202 connect
The second input terminal of 3dB electric bridge 301 is connect, the second of the first output end connection load 401,3dB electric bridge 301 of 3dB electric bridge 301 is defeated
Outlet connects emission filter 501, and for received two paths of signals to be carried out power combing, the first output end series load is carried out
Transmitting signal after synthesis is transmitted to emission filter by power absorption, second output terminal；The output end of emission filter 501 connects
Connect the input terminal of 1 point of 32 power splitter 601；The output end of 1 point of 32 power splitter 601 connects 64 road radio frequencies by the port TX
The 32 road channels NC of switch 703；
In a kind of preferred embodiment of the present invention, as shown in figure 3, the reception device, comprising: 1 point of 32 intermodulation radio frequency is opened
Close 701 (only embodying switching mode, realize that 1 point of 4 switch combination mode can be used specifically to synthesize in function), receiving filter 502
With Digital receiver module 801；The input terminal of 1 point of 32 intermodulation RF switch 701 passes through the port RX 64 tunnels of connection connection
The 32 road channels NC of RF switch 703；The input of the output end connection receiving filter 502 of 1 point of 32 intermodulation RF switch 701
End, the input terminal of the output end connection Digital receiver module 801 of receiving filter 502, the Digital receiver module are used
Sampling analysis processing is carried out in the inter-modulated signal generated to 32 terminal port antennaes.
In a kind of preferred embodiment of the present invention, as shown in figure 4, the inter-modulated signal that each port of antenna generates equally passes through 64 tunnels
Then it is low to be transferred to 32 tunnels by the end ANT of the low inter-modulation duplexer in 32 tunnels to the channel NC for the COM channel transfer of RF switch 703
Then the inter-modulated signal received is respectively transmitted to 1 point of 32 road RF switch 701 again and (only embodies and open by the end inter-modulation duplexer RX
Pass mode, realize function 1 point of 4 switch combination mode can be used specifically to synthesize) each switching channel, opened finally by radio frequency
Inter-modulated signal is transferred to the filtering of RX filter 502 and inhibited by the public port of pass, is finally delivered to Digital receiver module 801.
Digital receiver module 801 carries out analytical sampling processing to the transmitting intermodulation product received；32 terminal port antennaes, it is each
Port S parameter signal switches to the port NO of 64 road RF switches by the COM public port of 64 road RF switches, then S is joined
Number signal is sent to 32 road switching channels of 32 road RF switches, and 32 road RF switches are sent out S parameter signal by public port
It send to the test port of vector network analyzer, S parameter of 32 terminal port antennaes is analyzed for it.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (7)
1. a kind of 32 ports band S parameter passive cross modulation test instrument, which is characterized in that penetrated including emitter, reception device, 32 tunnels
Frequency switch, 64 road RF switches, 32 terminal port antennaes and vector network analyzer；
The emitter output end connects 32 paths of 64 road RF switches, which connects reception device simultaneously
Input terminal；The 32 road channel COM feeder lines of 64 road RF switches connect the tested port of 32 terminal port antennaes；64 road RF switches
Another 32 paths connect the input terminal of 32 road RF switches, the output end connected vector Network Analyzer of 32 road RF switches it is defeated
Enter end.
2. band S parameter passive cross modulation test instrument in 32 port according to claim 1, which is characterized in that the transmitting dress
It sets, comprising: the first signal source, second signal source, the first power amplifier, the second power amplifier, 3dB electric bridge, load, transmitting
Filter and 1 point of 32 power splitter；
The output end of first signal source connects the input terminal of the first power amplifier, the output end connection in second signal source
The input terminal of second power amplifier, the first input end of the output end connection 3dB electric bridge of the first power amplifier, the second power
Second input terminal of the output end connection 3dB electric bridge of amplifier, the first output end of 3dB electric bridge connect load, and the of 3dB electric bridge
Two output ends connect emission filter, and the output end of emission filter connects the input terminal of 1 point of 32 power splitter.
3. band S parameter passive cross modulation test instrument in 32 port according to claim 1, which is characterized in that 1 point of 32 function
The 32 road channels NC for dividing the output end of device to connect 64 road RF switches by the port TX.
4. band S parameter passive cross modulation test instrument in 32 port according to claim 1, which is characterized in that the reception dress
It sets, comprising: 1 point of 32 intermodulation RF switch, receiving filter and Digital receiver module；
The input terminal of 1 point of 32 intermodulation RF switch is logical by 32 road NC of the port RX connection 64 road RF switches of connection
Road；The input terminal of the output end connection receiving filter of 1 point of 32 intermodulation RF switch, the output end of receiving filter connect number
The input terminal of receiver module.
5. band S parameter passive cross modulation test instrument in 32 port according to claim 1, which is characterized in that 32 ports
Antenna, each port S parameter signal switch to the end NO of 64 road RF switches by the COM public port of 64 road RF switches
Mouthful, then S parameter signal is sent to 32 road switching channels of 32 road RF switches, 32 road RF switches are by public port by S
Parameter signal is sent to the test port of vector network analyzer, analyzes for it the S parameter of 32 terminal port antennaes.
6. band S parameter passive cross modulation test instrument in 32 port according to claim 2, which is characterized in that the 3dB electric bridge
For received two paths of signals to be carried out power combing, the first output end series load carries out power absorption, and second output terminal will
Transmitting signal after synthesis is transmitted to emission filter.
7. band S parameter passive cross modulation test instrument in 32 port according to claim 4, which is characterized in that the number connects
Receipts machine module, the inter-modulated signal for generating to 32 terminal port antennaes carry out sampling analysis processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631827.0A CN108931704A (en) | 2018-06-19 | 2018-06-19 | A kind of 32 ports band S parameter passive cross modulation test instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631827.0A CN108931704A (en) | 2018-06-19 | 2018-06-19 | A kind of 32 ports band S parameter passive cross modulation test instrument |
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| Publication Number | Publication Date |
|---|---|
| CN108931704A true CN108931704A (en) | 2018-12-04 |
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| CN201810631827.0A Pending CN108931704A (en) | 2018-06-19 | 2018-06-19 | A kind of 32 ports band S parameter passive cross modulation test instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261687A (en) * | 2019-06-19 | 2019-09-20 | 华南理工大学 | Large scale array antenna measurement system, method, apparatus and storage medium |
| CN110677202A (en) * | 2019-10-20 | 2020-01-10 | 南京纳特通信电子有限公司 | Array antenna intermodulation and active impedance test system |
| US10805015B1 (en) | 2020-02-21 | 2020-10-13 | Rohde & Schwarz Gmbh & Co. Kg | Method as well as test system for testing a device under test |
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