Accession Number : ADA020067

Title :   Tactical Miniature Crystal Oscillator.

Descriptive Note : Final rept. 1 Jun 73-30 Apr 75,

Corporate Author : BENDIX CORP BALTIMORE MD COMMUNICATIONS DIV

Personal Author(s) : Greenhouse,Harold M. ; McGill,Robert L.

Report Date : JAN 1976

Pagination or Media Count : 87

Abstract : This report describes the further development of a fast warmup Tactical Miniature Crystal Oscillator (TMXO). The intended use for this TMXO is as a reference frequency source in advanced tactical communications systems and in time ordered navigational systems. The present effort is a continuation by the authors of a previous study which defined particular problem areas. The basic structure remains the same as before. The quartz resonator is enclosed in a special enclosure, maintained at a constant temperature equal to the upper turn point of the resonator. The top of the crystal enclosure is the bottom of the microcircuit enclosure. This enclosure contains the oscillator/amplifier circuitry, heater, temperature controller and fast warmup compensation network. Both enclosures are supported by a thermal insulator, and all enclosed in an evacuated outer case. Changes in the electrical, mechanical and thermal design are described, pertaining to the solution of the remaining problems. Electronic methods for achieving the fast warmup compensation are discussed. (Author)

Descriptors :   *Crystal oscillators, *Tactical communications, Low power, Temperature control, Quartz, Miniature electronic equipment, Microelectronics, Voltage regulators, Stability, Varactor diodes, Capacitors

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE