Characteristics of surface acoustic wave resonators obtained from cavity analysis
Abstract
Fabry-Perot cavity analysis and circuit theorems are used to obtain the approximate terminal characteristics of a general two-port surface acoustic wave (SAW) resonator. The results are cast such that the performance of a two-port device with two transducers between the reflectors can be predicted simply from the insertion loss of the transducer pair without the cavity and the externally measured cavity parameters unloaded by the internal transducers. The analysis gives relative power levels within the device allowing a greater physical understanding of the individual effects of the various loss and reflection elements. Also, the analysis provides a very simple technique for deriving element values in proposed two-port equivalent circuits.
- Publication:
-
IEEE Transactions on Sonics Ultrasonics
- Pub Date:
- May 1977
- Bibcode:
- 1977ITSU...24..212C
- Keywords:
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- Cavity Resonators;
- Microwave Oscillators;
- Piezoelectric Transducers;
- Surface Acoustic Wave Devices;
- Acoustic Scattering;
- Equivalent Circuits;
- Network Synthesis;
- Power Efficiency;
- Quadrupole Networks;
- Electronics and Electrical Engineering