被试品辐射发射试验点位对测试结果影响

发布时间：2018-01-14 07:42

本文关键词：被试品辐射发射试验点位对测试结果影响　出处：《北京航空航天大学学报》2017年01期 　论文类型：期刊论文

【摘要】：为提高试验精度,减小电磁兼容(EMC)半电波暗室中被试品(EUT)的电磁辐射发射试验点位对测试结果的影响,研究了不同试验点位对半电波暗室典型谐振频率电磁信号辐射发射的影响规律。采用几何光学、一致性绕射理论和多路径效应算法对不同试验点位,暗室典型谐振频率电磁信号的传输过程进行数学建模,剔除直射场强影响,综合考虑信号传输过程中产生的反射、折射、绕射和多径等电磁传播效应,给出了数学模型和计算公式。将数学传播模型与剔除直射场影响的试验实测模型计算结果进行比对,验证了数学模型的有效性。该研究为修正被试品在暗室内不同点位进行辐射发射试验的测试结果提供了理论依据,有助于提高被试品电磁辐射发射试验的测试精度。
[Abstract]:In order to improve the test accuracy and reduce the effect of electromagnetic radiation emission test point on the test results in the EMC (electromagnetic compatibility) half-wave anechoic chamber. The effects of different experimental points on the radiation emission of typical resonance frequency electromagnetic signals in a semi-radio chamber are studied. Geometric optics, consistent diffraction theory and multipath effect algorithm are used to study the different experimental points. The transmission process of typical resonance frequency electromagnetic signal in the dark chamber is modeled by mathematical model. The direct field intensity is eliminated and the electromagnetic propagation effects such as reflection refraction diffraction and multipath are considered comprehensively. The mathematical model and calculation formula are given, and the calculation results of the mathematical propagation model are compared with that of the experimental measured model without the influence of the direct field. The validity of the mathematical model is verified. This study provides a theoretical basis for modifying the radiation emission test results of the subjects at different points in the dark room. It is helpful to improve the test accuracy of electromagnetic radiation emission test.
【作者单位】：北京航空航天大学电子信息与工程学院;
【基金】：国家自然科学基金(61427803,61221061)~~
【分类号】：TN03
【正文快照】： 网络出版地址:www.cnki.net/kcms/detail/11.2625.V.20160413.1132.001.html引用格式:吕冬翔,苏东林.被试品辐射发射试验点位对测试结果影响[J].北京航空航天大学学报,2017,43(1):100-106.LYU D X,SU D L.Influence of EUT radiated emission testing location on test result

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