Excitation of magnetostatic surface wave by coplanar waveguide transducers

Excitation of magnetostatic surface waves by coplanar waveguide transducers is analyzed by using the integral kernel expansion method. The Fourier int egral for the current density is derived in terms of an unknown normal comp onent of the magnetic flux density on slot region of a coplanar waveguide. The integral kernel is expanded into a series of Legendre polynomials and t hen applying Galerkin's method to the unknown held reduces the Fourier inte gral to a system of linear equations for the unknown coefficients. In this process, we should take into account the edge conditions which show nonreci procal characteristics depending on frequency. The present method shows exc ellent agreement with experiments.