Title :
low noise ovenized quartz oscillator
Author :
Evgeniy, Siiaev R. ; Dmitriy, Bogomolov V.
Author_Institution :
JSC RADIOPHYZIKA, Moscow, Russia
Abstract :
The development of a low noise quartz master oscillator is needed for a number of radiolocation and communication tasks. Ka-band oscillation obtained by frequency multiplication from such an oscillator signal must provide a coherent interval of more than a one second and a short term phase deviation less than 0.1 radian. A low noise ovenized AT-cut quartz oscillator for the frequency range 80-160 MHz has been elaborated for this purpose. Batler´s oscillator scheme was selected as the basis. All parameters from the Leeson phase noise model have been discussed and optimized. The oscillator scheme has been modified to approach the Q-factor of a crystal resonator. It has also allowed to reduce the influence of “technical” noise at oscillation. The phase noise level of the forming signal has been estimated by means of noise spectral density power measurements
Keywords :
Q-factor; VHF oscillators; circuit noise; crystal oscillators; frequency stability; phase noise; radio direction-finding; 80 to 160 MHz; Batler´s oscillator scheme; Ka-band oscillation; Leeson phase noise model; Q-factor; SiO2; coherent interval; crystal resonator; frequency multiplication; low noise quartz master oscillator; noise spectral density power; ovenized AT-cut quartz oscillator; radiolocation; short term phase deviation; Circuits; Fluctuations; Frequency conversion; Microwave oscillators; Phase estimation; Phase noise; Power measurement; Q factor; Signal processing; Stability;
Conference_Titel :
Frequency Control Symposium, 1998. Proceedings of the 1998 IEEE International
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7803-4373-5
DOI :
10.1109/FREQ.1998.717927
