Surface acoustic wave devices with non contact interdigital transducers ashish

Abstract

Surface acoustic wave SAW is a mechanical wave that travels along the surface of an elastic medium Conventional SAW devices consist of metallic comb shaped electrodes called interdigital transducer IDT patterned over the surface of a piezoelectric substrate The IDTs convert electrical energy to mechanical energy and vice versa The IDTs patterned over the piezo substrate affect the propagation of SAW mainly due to conductivity electrical load mass load dispersion and other secondary e