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Research on Influencing Factors of Shielding Effectiveness Testing Based on Spatial Field

Author: MaZhengPing
Tutor: TianJin
School: Xi'an University of Electronic Science and Technology
Course: Mechanical and Electronic Engineering
Keywords: FDTD Shielding effectiveness Calibration Test Window
CLC: TN03
Type: Master's thesis
Year: 2011
Downloads: 35
Quote: 0
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Abstract


EMC shielding technology evaluation system , the shielding effectiveness testing is an extremely important aspect of the shielding components and shielding performance of shielding materials , electromagnetic shielding material selection , Overall shielding performance of the basic guarantee . However, there are many factors that affect the measurements of shielding effectiveness of the shield , so their research has important practical significance . Practical problems , studied the effect of shielding effectiveness measurement result of the factors and constraints . First reviewed the a common shielding effectiveness test method and the principle and the advantages and disadvantages of each method to do the analysis , pointed out the shortcomings of today shielding effectiveness testing standards exist ; then shield wall surface test window shielding effectiveness research , testing and simulation of different size test empty window ; followed , the test method for shielded room shielding effectiveness of a shielded room wall standard testing window opened , and of different sizes, different shapes , different positions of the test window and shielding room size measurements of shielding effectiveness of shielding components and shielding materials FDTD ( finite difference time domain method) simulation analysis , draw the relationship between the non-standard test window and standard testing window between data , given the conclusion Finally, combined with the reality test given to ensure the accuracy of the shielding effectiveness of the test data .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > General issues > Structure
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