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Rigorous Analysis of a Metallic Circular Post in a Rectangular Waveguide With Step Discontinuity of Sidewalls

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2 Author(s)
Constantine A. Valagiannopoulos ; Nat. Tech. Univ. of Athens, Athens ; Nikolaos K. Uzunoglu

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.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:55 ,  Issue: 8 )