A method for calculating the properties of surface acoustic waves propagation in periodic metal gratings

The Hashimoto′s FEM program is a complete set of software written in the form of FORTRAN source codes,which was developed by Japanese researchers of Chiba university after spending several ten years from 1973 and used to calculate the properties of surface acoustic wave propagation in periodic metal gratings.The program can simulate Raylergh wave,leaky wave,SH-type SAW and surface transverse wave devices in the cases of single-electrode gratings,double-electrode gratings and triple-electrode gratings.It is now widely used by SAW researchers.