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Method for determining output impedance and voltage division coefficient of V type line impedance stabilization network

A technology of voltage division coefficient and output impedance, which is applied in the direction of measuring resistance/reactance/impedance, measuring devices, instruments, etc., can solve the problems of affecting the accuracy of test results and the large change of characteristic impedance with frequency, so as to improve efficiency and simplify test steps , The effect of improving the accuracy of the test

Active Publication Date: 2016-10-26
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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  • Method for determining output impedance and voltage division coefficient of V type line impedance stabilization network
  • Method for determining output impedance and voltage division coefficient of V type line impedance stabilization network
  • Method for determining output impedance and voltage division coefficient of V type line impedance stabilization network

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Embodiment Construction

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

[0031] The present invention provides a method for determining the output impedance and partial pressure coefficient of a V-type linear impedance stabilization network. According to this method, the output impedance and partial pressure coefficient of the V-type linear impedance stabilization network are calculated and analyzed, and the correctness and partial pressure coefficient of the analysis method are verified through 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 testing, LISN circuits are divided into V-type and Δ-type structures. First, analyze the principle of the ...

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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 partial pressure coefficient of a V-shaped linear impedance stabilization network, by which the output impedance and partial pressure coefficient of the V-shaped linear impedance stabilization network can be calculated and analyzed, and the correctness and partial pressure coefficient of the method can be verified through experiments. Reliability, electromagnetic compatibility conducted emission technology field. Background technique [0002] In the electromagnetic compatibility conducted emission test, due to the different types of the test product connected, the power supply impedance at different positions varies widely, resulting in a drastic change in the load end impedance of the test product, which directly affects the test result of the test product power line conducted emission . In order to make the conducted emission test results of power cords measured at different sites...

Claims

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Application Information

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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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