Surface acoustic wave oscillators
Abstract
A brief survey is made of the background and theory of the surface wave (SAW) oscillator. Experimental results are given for a 40 MHz SAW oscillator on alpha quartz. Several parameters of the oscillator which affect stability have been studied, including the temperature coefficients of time delay for the substrate, the stress sensitivity of the SAW substrate, and the effects of other components in the oscillator loop. Data are given for short term stability and aging on experimental units. Several applications of SAW devices are discussed including using the SAW oscillator as a stress sensor for digital pressure or force transducers and its use as a stable high frequency oscillator.
- Publication:
-
28th Annual Frequency Control Symposium
- Pub Date:
- 1974
- Bibcode:
- 1974frco.symp..266K
- Keywords:
-
- Electroacoustic Transducers;
- Frequency Stability;
- Stress Distribution;
- Surface Waves;
- Temperature Effects;
- Time Lag;
- Aging (Materials);
- Crystal Oscillators;
- Digital Systems;
- Frequency Control;
- High Frequencies;
- Pressure Sensors;
- Time Dependence;
- Electronics and Electrical Engineering