Numerical Study of the Current Distribution on a Post in a Rectangular Waveguide (Short Papers)

A recently developed, rapidly converging moment solution for electromagnetic scattering by a single inductive post in a rectangular wavegtride is extended to include the current induced on the past surface. Manuscript received December 8, 1983; revised May 21, 1984. This work was partiatly supported by the Technion VPR fund “ Philipson Fund for Research in Electrical Engineering.” Y. Leviatan is with the Department of Electrical Engineering, Technion-Israel Institute of Technology, Haifa, Israel. D. Shau and A. T. Adarns are with the Department of Electrical and Computer Engineering, Syracuse University, Syracuse, NY 13210. The results are represented by a Fourier series and the first few terms are compared with available data. ‘he excellent agreement demonstrates that this approach can yield an accurate solution. This rather simple procedure is even more attractive when other wavegnide obstacles such as thick ieises and posts of arbitrary shape, which require, in generat, more thau just a few Fourier terms for their current representation, are encountered.