Simple Six-Port Equivalent Circuits for Surface-Acoustic-Wave Interdigital Transducers

摘要

We have derived new simple and concise six-port equivalent circuit models and their transfer matrices of an N-pair of interdigital transducers (IDT) for analyzing two-port surface-acous-tic-wave (SAW) devices such as filters and resonators. The present models include various secondary effects such as electrical shorting and mass loading effect (MEL) and energy stor-age effect. Therefore, they can predict characteristics close to the actual performances of devices.