Damping structure for elastic surface wave device

摘要

An elastic surface wave device comprises a piezoelectric substrate; input and output interdigital transducers provided on one surface of the piezoelectric substrate and mutually spaced apart from each other to define a surface wave propagation path therebetween; and a surface wave absorber partially overlappingly provided on that end portion of at least one of the transducers which lies on an extension of the surface wave propagation path, the absorber having opposite side edges diagonally intersecting with respect to the surface wave propagation path.