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Updated: Jul 7, 2026

Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
Modelling the transverse-mode response of a two-port SAW resonator
1Dept. of Electr. and Comput. Eng., McMaster Univ., Hamilton, Ont.
Abstract:
An equation is derived for the transverse-mode frequencies of a two-port surface-acoustic-wave (SAW) resonator with uniform reflection gratings. It is postulated that only odd-order (symmetric) transverse modes should be excited in such a grating, due to its symmetrical placement with respect to the interdigital transducer (IDT). Frequency response modeling involves a summation of one-dimensional transmission-matrix computations for the fundamental mode and participating transverse ones. Excellent agreement is obtained between theory and experiment for a 360-MHz resonator with three close-in transverse modes, attributed to symmetric modes of odd order m=3, 5, 7.
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