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Multi-signal passive intermodulation testing system

A passive intermodulation and test system technology, applied in the field of signal processing, can solve the problems of complex multi-band test process and high cost

Inactive Publication Date: 2018-03-06
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a multi-signal passive intermodulation test system for the traditional multi-signal passive intermodulation multi-band test process complicated and costly technical problems

Method used

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Embodiment Construction

[0014] The specific implementation of the multi-signal passive intermodulation testing system provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] refer to figure 1 , figure 1 Shown is a schematic structural diagram of a multi-signal passive intermodulation test system of an embodiment, including: a first signal source 11, a second signal source 12, a power amplifier circuit 20, a first signal gating circuit 30, a second signal gating circuit Circuit 45, first duplexer 41, second duplexer 43, receiver 47 and control circuit 49;

[0016] The first signal source 11 and the second signal source 12 are respectively connected to the input end of the power amplification circuit 20; the output end of the power amplification circuit 20 passes through the first signal gating circuit 30 and the first duplexer 41 in sequence Connect the device under test 42, wherein the output end of the power amplifier circuit 20 i...

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Abstract

The invention relates to a multi-signal passive intermodulation testing system. The multi-signal passive intermodulation testing system comprises a first signal source, a second signal source, a poweramplification circuit, a first signal gating circuit, a second signal gating circuit, a first diplexer, a second diplexer, a receiver and a control circuit. The first signal source generates a firstsignal and sends the first signal to a first GaN power amplification tube, the second signal source generates a second signal and sends the second signal to a second GaN power amplification tube, thefirst GaN power amplification tube carries out power amplification on the first signal and sends the amplified first signal to the first signal gating circuit, the second GaN power amplification tubecarries out power amplification on the second signal and sends the amplified second signal to the first signal gating circuit, the first signal gating circuit synthesizes the amplified first signal with the amplified second signal, and sends the synthesized signal to a device to be tested through the first diplexer; the second signal gating circuit receives an intermodulation signal generated by the device to be tested through the second diplexer, and sends the intermodulation signal to the receiver; and the control circuit obtains the intermodulation signal from the receiver and carries out atest.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a multi-signal passive intermodulation test system. Background technique [0002] With the rapid development of wireless mobile communication, operators have 2G, 3G and 4G networks at the same time, especially DAS (Distributed Access System Solution, distributed antenna system), MDAS (Multiservice Distributed Access System Solution, multi-service distribution system), For the application of multi-channel distributed system networking methods such as POI (Point of Interface, multi-system integration platform), rail private network and iron tower, the frequency bands and systems of each system are different. The situation of passive intermodulation between multiple signals is complicated, and intermodulation interference has become a technical problem that plagues the co-construction and sharing of base stations and multi-channel distribution systems. Passive components ...

Claims

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Application Information

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IPC IPC(8): H04B17/15H04B17/29
CPCH04B17/15H04B17/29
Inventor 李合理刘海涛谢路平樊奇彦罗漫江
Owner COMBA TELECOM SYST CHINA LTD
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