Title :
Automatic Frequency Control of Microwave Oscillators
Author :
Rideout, Vincent C.
Author_Institution :
Formerly, Bell Telephone Laboratories, Inc., New York, New York; now, University of Wisconsin, Madison, Wisconsin
Abstract :
A method for the automatic frequency control of any type of tunable microwave oscillator is described. In this method a servomechanism is used which includes a wave-guide discriminator circuit, a mercury-contact relay, a 60-cycle amplifier, and a small two-phase induction motor. Tests made on a preliminary model of a circuit of this type used with a 4000-megacycle oscillator showed that a stability of 1 part in 50,000 was obtainable. The manner in which such a control system may be used in a microwave repeater is described.
Keywords :
Automatic frequency control; Circuit stability; Circuit testing; Control systems; Induction motors; Microwave oscillators; Microwave theory and techniques; Relays; Servomechanisms; Tunable circuits and devices;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1947.234266
