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Unified solution of various dielectric-loaded ridge waveguides with a mixed spectral-domain method

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2 Author(s)
Ng, K.T. ; Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA ; Chi Hou Chan

A mixed spectral-domain method is developed and applied to the analysis of various dielectric-loaded ridge waveguides. Magnetic surface currents at apertures are identified as unknowns in auxiliary structures. Spectral Green's functions are formulated for these structures using the spectral immittance approach. Mixing different spectral domains existing on the two sides of an aperture in a spectral Galerkin approach then leads to the characteristic equations required for the dispersion analysis. The simplicity and numerical efficiency of the conventional spectral-domain immittance approach, which cannot be applied directly to the present structures, are maintained. Representative results are obtained to illustrate the application of the method

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:37 ,  Issue: 12 )

Date of Publication:

Dec 1989

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