公开(公告)号：US07675294B2

公开(公告)日：2010-03-09

申请号：US11715540

申请日：2007-03-08

申请人： George F. Stone, III ,  Gilbert P. Condon

发明人： George F. Stone, III ,  Gilbert P. Condon

IPC分类号： G01R29/00

CPC分类号： G01R29/0871 ,  G01N22/00

摘要： A method for determining attenuation of electromagnetic waves impacting an electromagnetic shield. A reference amplitude is provided. A signal exhibiting a first frequency is converted to a converted signal exhibiting a second frequency higher than the first frequency. Electromagnetic waves corresponding to the converted signal are transmitted from a first antenna toward a second antenna with the electromagnetic shield positioned between them. Attenuated remnants of the electromagnetic waves received by the second antenna are converted to a corresponding signal exhibiting a third frequency that is lower than the second frequency. The amplitude of the corresponding signal is compared to the reference amplitude.

摘要翻译： 一种确定影响电磁屏蔽的电磁波衰减的方法。 提供参考幅度。 呈现第一频率的信号被转换成具有高于第一频率的第二频率的转换信号。 对应于转换后的信号的电磁波从第一天线向第二天线发射，电磁屏蔽位于它们之间。 由第二天线接收的电磁波的衰减残余被转换成呈现低于第二频率的第三频率的相应信号。 将相应信号的幅度与参考幅度进行比较。