Title :
Measured FM noise reduction by injection phase locking
Author :
Ashley, J.R. ; Palka, F.M.
Abstract :
A 9.72 GHz avalanche transit time oscillator (ATTO) with FM noise of 100 Hz rms/100 Hz was synchronized by a 9.72 GHz stabilized klystron with FM noise of 0.01 Hz rms/100 Hz. The FM noise of the synchronized oscillator was reduced, but not as much as expected for modulation frequencies below 10 kHz. The AM noise was not changed by synchronization.
Keywords :
Frequency modulation; Frequency synchronization; Klystrons; Laplace equations; Noise measurement; Noise reduction; Oscillators; Phase measurement; Phase noise; Schottky diodes;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1970.7565
