A fast full-wave MoM analysis of arbitrary microstrip structures based on new close-form Green's functions

A moment method based on triangular (RWG) basis functions and new closed-form Green's functions is presented for the analysis of microstrip structures of arbitrary shapes. It combines the flexibility of the triangular basis functions with the efficiency of the closed-form Green's functions. The new method is applied to obtain the scattering coefficients of a two-gap microstrip filter and it is found to be accurate and efficient.