半电波暗室归一化场地衰减测试探讨  

Discussion on Calculation and Measurement of Normalized Site Attenuation of Semi-Anechoic Chamber

作　　者：王权[1] 苏宗文[1] 李澍[1] 任海萍[1] 

机构地区：[1]中国食品药品检定研究院,医疗器械检定所,北京100050

出　　处：《中国医疗设备》2016年第10期36-39,共4页China Medical Devices

基　　金：中国食品药品检定研究院中青年发展研究基金课题任务书(2014C6)

摘　　要：本文首先阐述了评估电波暗室性能的归一化场地衰减测试(NSA)的测试原理和方法,计算了理想状态3 m和10 m测试条件下的NSA理论值,并分析了电磁兼容归一化场地衰减测试的一般性步骤。然后对半电波暗室进行了初步测试并得到了实际测量数据。最后讨论了影响测试结果的一般性因素,结果表明评估暗室系统可正常运行。Basic principles and common methods of NSA（Normalized Site Attenuation） test for the performance of the semi-anechoic chamber were introduced first in this paper. The theoretical value of NSA tests under the conditions of 3 m and 10 m range semi-anechoic chamber were calculated and the general test procedures of EMC（Electromagnetic Compatibility） NSA were analyzed. Then, the semianechoic chamber was tested preliminarily and the actual measurement data was achieved. Finally, the general factors affecting the test results were discussed. And the evaluation results showed that the chamber could work normally.

关 键 词：半电波暗室 归一化场地衰减 场地电压驻波比 电磁兼容 10米法 

分 类 号：R318[医药卫生—生物医学工程] TM937[医药卫生—基础医学]