Ab. Yakovlev et Ab. Gnilenko, ANALYSIS OF MICROSTRIP DISCONTINUITIES USING THE METHOD OF INTEGRAL-EQUATIONS FOR OVERLAPPING REGIONS, IEE proceedings. Microwaves, antennas and propagation, 144(6), 1997, pp. 449-457
The method of integral equations for overlapping regions (MIEOR) in co
njunction with a planar dispersive waveguide model is proposed for the
investigation of microstrip discontinuity problems. A general formula
tion for a microstrip multiport junction and the numerical solution fo
r the scattering matrix of T- and right-angled bend junctions with and
without matching stubs are presented. The proposed technique directly
leads to Fredholm's integral equation of the second kind or a coupled
set of integral equations for the electric field components defined i
n overlapping subregions of the planar dispersive waveguide model. The
Galerkin's method is employed to find the unknown coefficients in the
electric field series expansion which represent the S-parameters of t
he junctions. The mathematical substantiation of the algorithm is prov
ided. Numerical results are presented for T- and right-angled microstr
ip junctions showing good agreement with results already published.