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Device and method for testing performance of electromagnetic interference noise separator

A technology of noise separation and electromagnetic interference, which is used in measurement devices, environmental/reliability testing, measurement of interference from external sources, etc., to achieve the effect of effective targeted guidance

Active Publication Date: 2021-07-09
FAW CAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a performance testing device for electromagnetic interference noise separator, and also provide a performance testing method for electromagnetic interference noise separator to solve the problem of accurate measurement The problem of conducted noise over a wide frequency band

Method used

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  • Device and method for testing performance of electromagnetic interference noise separator
  • Device and method for testing performance of electromagnetic interference noise separator
  • Device and method for testing performance of electromagnetic interference noise separator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Common Mode Insertion Loss Test

[0054] The tested conducted noise separator 1 and the in-phase power divider 2 are respectively connected to the dual-port network analyzer 5 through a 50Ω coaxial cable, and the tested conducted noise separator 1 is connected to the in-phase power divider 2 through a 50Ω coaxial cable, The 50Ω matching load 4 is connected to the conducted noise separator 1 under test through a 50Ω coaxial cable.

[0055] The input port I11 is connected to the output port III21, the input port II12 is connected to the output port IV22, the output port I13 is connected to the 50Ω matching load 4, and the input port III23 and the output port II14 are respectively connected to the dual-port network analyzer 5.

Embodiment 2

[0057] Common mode-differential mode isolation test

[0058] The tested conducted noise separator 1 and the in-phase power divider 2 are respectively connected to the dual-port network analyzer 5 through a 50Ω coaxial cable, and the tested conducted noise separator 1 is connected to the in-phase power divider 2 through a 50Ω coaxial cable, The 50Ω matching load 4 is connected to the conducted noise separator 1 under test through a 50Ω coaxial cable.

[0059] The input port I11 is connected to the output port III21, the input port II12 is connected to the output port IV22, the output port II14 is connected to the 50Ω matching load 4, and the input port III23 and the output port I13 are respectively connected to the dual-port network analyzer 5.

Embodiment 3

[0061] Differential Mode Insertion Loss Test

[0062] The tested conducted noise separator 1 and the inverting power divider 3 are respectively connected to the two-port network analyzer 5 through a 50Ω coaxial cable, and the tested conducted noise separator 1 is connected to the inverting power divider 3 through a 50Ω coaxial cable The 50Ω matching load 4 is connected to the tested conducted noise separator 1 through a 50Ω coaxial line.

[0063] The input port I11 is connected to the output port V31, the input port II12 is connected to the output port VI32, the output port II14 is connected to the 50Ω matching load 4, and the input port IV33 and the output port I13 are respectively connected to the dual-port network analyzer 5.

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Abstract

The invention relates to a device and a method for testing the performance of an electromagnetic interference noise separator, and the device consists of a tested conducted noise separator, an in-phase power divider, an anti-phase power divider, a 50-ohm matching load and a dual-port network analyzer which are connected through a 50-ohm coaxial line. The tested conducted noise separator is provided with two input ports and two output ports and is used for inputting a power line noise signal and outputting a differential mode noise component and a common mode noise component, and the anti-phase power divider and the in-phase power divider are used for simulating the differential mode signal and the common mode signal. The method can be used for testing the performance of the conducted noise separator and also can be used for testing the performance of the filter, and carrying out common-mode and differential-mode separation and quantification on electromagnetic compatibility disturbance conducted noise in a product test process. Scientific and effective targeted guidance is provided for common-mode and differential-mode filter parameters designed for suppressing conducted noise in the electromagnetic compatibility rectification and optimization process.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a performance test device and a test method of an electromagnetic interference noise separator. Background technique [0002] The electromagnetic interference noise separator, referred to as the separator, is a device used to conduct electromagnetic interference signal processing at the power port, and output the differential mode component and common mode component of the electromagnetic interference signal separately from different ports. After obtaining the results of differential mode interference and common mode interference components, the filter can be designed in order to improve the performance of the product. The performance of the separator determines the accuracy of the test results. At present, a four-port network analyzer is generally used to test the performance of the splitter, but the four-port network analyzer is expensive and the test setup is relatively comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/001G01R31/003
Inventor 王洪超李志刚宋喜岗姜意驰张宝国谷原野马良马文峰张翘楚姬楠
Owner FAW CAR CO LTD
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