Closed-Form Approximation for Parallel-Plate Waveguide Coefficients

P. Valtr, P. Pechac
2013 Radioengineering  
Simple closed-form formulas for calculating coefficients of modes excited in a parallel-plate waveguide illuminated by a planar wave are presented. The mode-matching technique and Green's formula are used to arrive at a matrix-based expression for waveguide coefficients calculation. Simplified solution to this matrix is proposed to derive approximate mode coefficient formulas in closed-form for both TE and TM polarization. The results are validated by numerical simulations and show good
more » ... d show good accuracy for all incidence angles and in broad frequency range.
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