Simultaneous Multimode Oscillation of Stress-Compensated Cut Quartz Resonator with Narrow-Band Wide Variable-Range Quartz Crystal Oscillator

Tomio Sato, Tetsuya Akitsu
2014 Engineering  
A multimode-quartz-crystal oscillator was developed to excite stable dual-mode resonance at different frequencies: The oscillation of the 3rd harmonic resonance of the principle C-mode and an additional resonance B-mode of SC-cut crystal. Harmonic combinations of the 3rd and fundamental mode of B-mode with the 3rd harmonics of C-mode are demonstrated. The measurement of the temperature dependence of the oscillation frequency is demonstrated along with the stability determined by root Allan
more » ... by root Allan variance. Dependence on the open conductance of the active circuit and the dependence on the coupling capacitors are discussed.
doi:10.4236/eng.2014.613088 fatcat:3ixkdnodefa6lnd3s52pizw6ty