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1. (WO2017017579) VECTOR NETWORK ANALYZER

Pub. No.:    WO/2017/017579    International Application No.:    PCT/EP2016/062897
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Wed Jun 08 01:59:59 CEST 2016
IPC: G01R 23/14
G01R 27/28
G01N 21/3581
Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Inventors: VELTHAUS, Karl-Otto
GÖBEL, Thorsten
CHOI, Jung Han
Title: VECTOR NETWORK ANALYZER
Abstract:
The invention relates to a vector network analyzer comprising: an input- and output measuring device (10, 20); a beat source (40) for generating an optical beat signal; an optical transmission device (50) that divides the optical beat signal into at least one first and one second partial signal (TS1, TS2), wherein the transmission device (50) conducts the first partial signal (TS1) to at least one terahertz transmitter (11, 21) and the second partial signal (TS2) to at least one terahertz receiver (12, 22) and/or to at least one terahertz reference receiver (13, 23); and a phase changing unit (60) for varying the phase of the first and/or the second partial signal (TS1, TS2) of the optical beat signal.