Characterization and prediction of transverse plate resonators built using mixed strip and groove gratings

Two approaches are developed to model accurately the physical characteristics of plate mode devices, and more specifically of resonators. They are respectively based on pure finite element computation and on mixed boundary integral methods and finite element analysis (BIM/FEA). The main parameters of wave propagation (velocity, coupling factor, reflection, and so on) can be estimated, considering an infinite periodic structure and using the harmonic admittance, and can be inserted in a mixed matrix model to simulate the electrical response of devices. A comparison between theory and experiments is reported for transverse plate resonators built using mixed strip and groove gratings