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The scattering of guided waves by a conductive post placed inside a rectangular waveguide with a step discontinuity on its sidewalls is analyzed through an integral-equation formulation. The interaction between post and discontinuity is examined with use of the Green's function. Numerical computations are carried out based on the mode-matching technique, providing a stable and accurate solution. An equivalent-circuit model is developed from the electromagnetic analysis and the computed scattering S-parameters. The developed solution accuracy is validated with simulation software.
Microwave Theory and Techniques, IEEE Transactions on (Volume:55 , Issue: 8 )
Date of Publication: Aug. 2007