IEC 62431-2008 毫米波频中电磁波吸收器的反射率.测量方法

标准号：IEC 62431-2008
中文标准名称：毫米波频中电磁波吸收器的反射率.测量方法
英文标准名称：Reflectivity of electromagnetic wave absorbers in millimetre wave frequency - Measurement methods
标准类型：L26
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L26
国际标准分类号：33.120.10
引用标准：ISO/IEC 17025
适用范围：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 outbelow.Material: Conductive material, dielectric material, magnetic material.Shape: planar-, pyramidal-, wedge-type, or other specific shapes.Layer structure: single layer, multi layers, or graded-index material.