Title :
Using return ratios to design microwave oscillators
Author :
McGregor, I. ; Maclean, D. ; Wasige, E. ; Thayne, I.
Author_Institution :
Ultrafast Syst. Group, Glasgow Univ., UK
Abstract :
This paper describes how return ratios (RR) can be used to design microwave frequency oscillators with decreased start up time, improved spectral purity, and increased efficiency. Thus by using the new design method, an oscillator circuit is optimized for output power or start up time by designing for RR>1 at 180 deg phase shift whilst keeping the oscillator operating frequency constant.
Keywords :
equivalent circuits; microwave circuits; microwave oscillators; spectral analysis; microwave frequency oscillator design; operating frequency; optimization; phase shift; return ratio; spectral purity; Admittance; Circuit testing; Equivalent circuits; Frequency dependence; Measurement standards; Microwave frequencies; Microwave oscillators; Scattering parameters; Stability; System testing;
Conference_Titel :
High Frequency Postgraduate Student Colloquium, 2005
Print_ISBN :
0-7803-9500-X
DOI :
10.1109/HFPSC.2005.1566366
