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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Druckformat: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v51.i2-3.100
pages 112-118

An Efficient Algorithm for Analizing a WaveguideA Bifurcated by a Thin Semi-Infinite Plate and Its Application to the Design of Millimeter Bandpass Filters

L. A. Rud'
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkov 61085


An efficient algorithm is proposed to calculate the generalized scattering matrix in the case of a semi-infinite thin plate placed within the E-plane of a rectangular waveguide. It is based on the moment method for solving the integral Fredholm equation with respect to the electrical field distribution in the plane of the discontinuity. The second-kind Chebyshev polynomials are used as the basis and trial functions. Results of investigating the convergence of the developed algorithm are presented. It is shown that neglecting the plate thickness may result in a significant discrepancy between the expected and actual response functions of the bandpass filters constructed with the use of longitudinal strip diaphragms.

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