Title :
Phase noise measurements in dual-mode SC-cut crystal oscillators
Author :
Watanabe, Yasuaki ; Okabayashi, Toshihito ; Goka, Shigeyoshi ; Sekimoto, Hitoshi
Author_Institution :
Graduate Sch. of Eng., Tokyo Metropolitan Univ., Japan
fDate :
3/1/2000 12:00:00 AM
Abstract :
This paper describes the phase-noise characteristics and the analysis model of an SC-cut dual-mode oscillator. The C mode phase-noise sideband levels of -124 dBc at 10 Hz and -154 dBc at 10 kHz have been demonstrated using a dual-mode oscillator that simultaneously excited the C and B mode of a 10-MHz, third overtone, SC-cut crystal resonator. Based on Leeson´s model, a phase-noise analysis model for dual-mode oscillators has been proposed also. Actual phase-noise levels of the C mode in dual-mode oscillation corresponded well to results calculated from the proposed model.
Keywords :
crystal oscillators; phase noise; 10 MHz; B-mode; C-mode; Leeson model; SiO/sub 2/; dual-mode SC-cut crystal oscillator; phase noise; quartz oscillator; sideband level; Circuits; Frequency response; Mobile communication; Narrowband; Noise measurement; Phase measurement; Phase noise; Predictive models; Temperature sensors; Voltage-controlled oscillators;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
