The Sub-Domain Approach Applied to Conductive Sector Problems

Perfect electric conducting (PEC) sectors illuminated by transverse magnetic (TM) and transverse electric (TE) field excitations are studied using the subdomain approach. The subdomain approach, which is similar to the method of overlapping regions (MOR) and the T-block method, requires field expansions in overlapping subdomains and subsequent mode matching. Results for surface current densities are compared with numerical results from COMSOL for problems involving wave scattering from PEC sectors of finite dimension. Results show that the subdomain approach can be as accurate as other numerical solutions and maybe more computationally efficient.