公开(公告)号：US09989481B2

公开(公告)日：2018-06-05

申请号：US15030548

申请日：2014-09-26

Applicant: UNIVERSITY OF MANITOBA

Inventor： Can-ming Hu ,  Yongsheng Gui ,  Lei Fu

IPC: G01N22/00 ,  G01R29/08

CPC classification number: G01N22/00 ,  G01R29/0814 ,  G01R29/0871

Abstract: A solid state sensor may be used to down-convert microwave signal into a low-frequency voltage or current signal, where its phase still carries the information of a measured continuous wave (CW) microwave phase. Two CW microwaves may be mixed and a solid state sensor used to rectify the mixed microwave into a direct voltage or current signal. The measurement system may include an input node for receiving a microwave signal from a source from which the output microwave is coherently split into two parts by a microwave power divider. Each part may travel in a separate path and couple at the solid state sensor. A lock-in amplifier coupled to the solid state sensor may be used to determine simultaneously a magnitude and phase of the microwave signals received from the microwave source.