A method for determining the output impedance and voltage division coefficient of a v-type linear impedance stabilization network

A technology of voltage division coefficient and output impedance, applied in the direction of measuring resistance/reactance/impedance, instruments, measuring devices, etc., can solve the problem that the characteristic impedance changes greatly with frequency and affects the accuracy of test results, etc., to simplify the test steps and improve efficiency , The effect of improving the accuracy of the test

Active Publication Date: 2019-02-01
BEIHANG UNIV
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Problems solved by technology

[0006] When the LISN specified in the existing standard is working, the characteristic impedance changes greatly with the frequency, which affects the accuracy of the test results

Method used

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  • A method for determining the output impedance and voltage division coefficient of a v-type linear impedance stabilization network
  • A method for determining the output impedance and voltage division coefficient of a v-type linear impedance stabilization network
  • A method for determining the output impedance and voltage division coefficient of a v-type linear impedance stabilization network

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The invention provides a method for determining the output impedance and voltage division coefficient of a V-shaped linear impedance stabilization network. According to the method, the output impedance and voltage division coefficient of the V-type linear impedance stabilization network are calculated and analyzed, and the correctness and accuracy of the analysis method are verified by experiments. reliability, such as Figure 4 As shown, it specifically includes the following steps:

[0032] Step 1: Analyze the circuit principle of the V-type LISN according to its functions and indicators;

[0033] According to the regulations of the International Radio Regulatory Commission on LISN circuits for electromagnetic compatibility tests, LISN circuits are divided into V-type and Δ-type structures. Firstly, analyze the principle of the V-type LISN ...

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Abstract

The invention, which belongs to the technical field of the electromagnetic-compatibility conducted emission testing, discloses a method for determining an output impedance and a voltage division coefficient of a V type line impedance stabilization network (LISN). According to the method, for an LISN with known element parameters in a description, the output impedance and voltage division coefficient of the LISN can be obtained based on calculation and analysis; and a tested piece interference voltage value that is measured practically by a receiver during a testing process can be corrected. According to the invention, the method plays an important role in correcting a conducted emission testing result and has guiding significance in improving the conducted emission testing precision.

Description

technical field [0001] The invention relates to a method for determining the output impedance and voltage division coefficient of a V-shaped linear impedance stabilization network, by which the output impedance and voltage division coefficient of a V-type linear impedance stabilization network can be calculated and analyzed, and the correctness and accuracy of the method are verified by experiments Reliability, Electromagnetic Compatibility Conducted emission technology field. Background technique [0002] In the electromagnetic compatibility conduction emission test, due to the different types of connections of the tested product, the power supply impedance at different positions varies greatly, resulting in drastic changes in the load terminal impedance of the tested product, which directly affects the test results of the tested product’s power line conducted emission . In order to make the conducted emission test results of power lines measured in different sites compara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/28G01R27/14
CPCG01R27/14G01R27/28
Inventor 苏东林吕冬翔陈尧刘焱
Owner BEIHANG UNIV
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