关键词:
吸收器
定义
电气工程
电磁兼容性
电磁学
EMC
高频
干扰抑制
测量
测量条件
测量技术
金属的
反射特性
反射率
反射
散射变量
规范
通信
标准号:
IEC 62431-2008
摘要:
This International Standard specifies the measurement methods for the reflectivity ofelectromagnetic wave absorbers (EMA) for the normal incident, oblique incident and eachpolarized wave in the millimetre-wave range. In addition, these methods are also equallyeffective for the reflectivity measurement of other materials:- measurement frequency range: 30 GHz to 300 GHz;- reflectivity: 0 dB to-50 dB;- incident angle: 0~ to 80~.NOTE This standard is applicable not only to those EMA which are widely used as counter-measures againstcommunication faults, radio interference etc., but also to those used in an anechoic chamber in some cases. EMAsmay be any kind of material, and may have any arbitrary shape, configuration, or layered structure as pointed ***: Conductive material, dielectric material, magnetic ***: planar-, pyramidal-, wedge-type, or other specific *** structure: single layer, multi layers, or graded-index material.