Title :
Tunable Magnetostatic Surface Wave Oscillator At 4 GHz
Author :
Carter, R.L. ; Owens, J.M. ; Brinlee, W.R. ; Sam, Y.W., Jr. ; Smith, C.V.
Abstract :
An oscillator tunable from 1.8 GHz to 4.0 GHz has been fabricated using a Magnetostatic Surface Wave (MSSW) 2-port etched groove resonator as the frequency selective element, and a bipolar transistor amplifier for gain in the feedback loop. The theory for a resonator based oscillator is summarized, including the effect of loop gain, amplifier noise loop power, and resonator Q on oscillator noise. Noise and amplitude characteristics of the oscillator are reported over the tuning range. FM phase noise is comparable to YIG sphere oscillators and optimization should yield significant improvement.
Keywords :
Bipolar transistors; Etching; Feedback loop; Magnetostatic waves; Noise level; Oscillators; Power amplifiers; Resonant frequency; Surface waves; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1981 IEEE MTT-S International
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/MWSYM.1981.1129934
