Design and Modelling of a Two-port Surface Acoustic Wave Resonator using Coupling-of-modes Theory

In this present paper the coupling-of-modes theory has been used to design and simulate the characteristics of a two-port SAW resonator with shorted reflection gratings to define the resonance cavity. A resonator device at 150 MHz has been designed and fabricated on ST-Quartz. It is found that the simulated and experimental characteristics of the device are in close agreement. The results show that the SAW designs based on coupling-of-modes formulation are adequate for most applications