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公开(公告)号:US09859999B2
公开(公告)日:2018-01-02
申请号:US15292640
申请日:2016-10-13
发明人: Jean-Christophe Joly , Sylvain Jonniau , Matthieu Werquin , Nicolas Vellas , Christophe Gaquiere , Benjamin Choteau
IPC分类号: H04B17/00 , H04B17/318
CPC分类号: H04B17/318 , G01R29/0835
摘要: A system for measuring the attenuation of electromagnetic shielding of an infrastructure as a function of the frequency, including a transmitter of a white noise signal with a constant power over a frequency band between a minimum frequency and a maximum frequency, a signal receiver, the transmitter and the receiver being capable of sending a signal and receiving a signal across the infrastructure, the receiver including a filter module capable of applying sliding filter on the received signal between the minimum frequency and the maximum frequency, and a double synchronous detection module capable of double synchronous detection on a signal output by the filter module.