Accession Number:

AD0296104

Title:

FREQUENCY TEMPERATURE COMPENSATION TECHNIQUES FOR QUARTZ CRYSTAL OSCILLATORS

Descriptive Note:

Quarterly rept. no. 1

Corporate Author:

BENDIX CORP DAVENPORT IA PIONEER-CENTRAL DIV

Personal Author(s):

Report Date:

1963-01-14

Pagination or Media Count:

123.0

Abstract:

Research concerns evolving a practical analytical and empirical approach to the temperature compensation of quartz crystal oscillators. the study concentrates on a nominal frequency of three mc, but will be generally applicable to A cut quartz crystals of from 1 to 20 mc. The mathematical analysis of five different methods of temperature compensating crystal oscillators is presented. The five methods presented are referred to as Methods A, B, B, D and E. Method A utilizes a back-biased diode and thermistor as the compensation elements. Methods B and B utilize the junction c pacitance of the transistor and thermistors in the transistor bias network for compensation. Method D uses the injector to collector junction capacitance of a binistor and a thermistor control network as the compensation elements. System E utilizes a forward biased diode, capacitor and thermistor control network as the compensation elements. The results of experimental tests on the compensation circuits andor compensated oscillator are presented. A compensation on one three-mc oscillator was within .7 parts in 10 to the 7th power, from 0 to 60 C.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE