title: Transmission and reflection coefficients for surface transverse waves propagating under shorted metal strip gratings.
abstract: Coupled-mode theory is used for the analysis of surface transverse waves (STWs) propagating under metal-strip gratings in the YZ plane of quartz. Analytical expressions are obtained for the reflection and transmission coefficients of waves propagating on rotated Y-cut substrates of weakly piezoelectric trigonal, tetragonal, or hexagonal crystals. A quadratic dependence of the stopband width on the height-to-period ratio of the electrodes is found. This is an agreement with stopband width measurements. The results can be used in the analysis of STW grating structures, particularly the two-port resonator filter.
authors.affiliation: Dept. of Solid State Phys., Sofia Univ.
authors.forename: B I
authors.initials: BI
authors.lastname: Boyanov
authors.forename: V L
authors.initials: VL
authors.lastname: Strashilov