SAW and pseudo-SAW properties using matrix methods

A review of the basic features of surface acoustic waves (SAWs) and pseudo-SAWs (PSAWs) using the matrix method is presented. The mechanically free open-circuited and short-circuited surface wave boundary value problems for piezoelectrics are formulated. Two of the three possible types of modes (SAW and slow-PSAW) are described, and a number of computationally simple, frequency-independent analytical functions are derived. The relationship of these functions to the effective permittivity concept is demonstrated, and illustrative numerical examples for slow-PSAWs reveal that low-loss orientations are quite sensitive to material constant values