Title :
A highly sensitive millimetre wave quasi-optical FM noise measurement system
Author :
Smith, G.M. ; Lesurf, J.C.G.
Author_Institution :
Dept. of Phys. & Astron., St. Andrews Univ., UK
Abstract :
A highly sensitive, tunable, low-loss quasi-optical millimeter wave FM noise measurement system has been constructed. It utilizes a matched, easily tunable quasi-optical cavity in reflection, acting as a carrier suppression filter. It can operate with matched cavity Qs of several hundred thousand with almost zero insertion loss to provide an extremely high discriminator slope at low power levels. The FM noise measurement system can allow direct measurement of phase locked sources at low input power levels over ultrawideband frequency ranges.<>
Keywords :
electric noise measurement; frequency modulation; microwave measurement; tuning; FM noise measurement system; carrier suppression filter; direct measurement; low input power levels; low loss quasioptical system; millimetre wave; phase locked sources; quasi-optical cavity; tunable MM-wave system; ultrawideband frequency ranges; Acoustic reflection; Delay lines; Frequency; Insertion loss; Noise measurement; Optical waveguides; Phase measurement; Phase noise; Power harmonic filters; Ultra wideband technology;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147186
