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| FINITE-ELEMENT ANALYSIS OF PLANAR DIELECTRIC WAVEGUIDE DISCONTINUITIES |
| Zhang Lijun; Xu Shanjia |
| Dept. of EEIS,USTC,Hefei 230027 |
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Abstract The finite element method is combined with the mode-matching method and the multi-mode network theory to analyze the scattering and radiation characteristics of a class of planar dielectric waveguide discontinuities. Unlike the conventional method to treat the radiation as a "source-field" problem, in the present approach, the dispersion characteristics of dielectric guidedwave structures are calculated first, and then the radiation problem is transferred to the propagation problem of a series of surface-waves and space waves from the viewpoint of scattering,
thus the analysis is tremendously simplified.
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Received: 25 July 1996
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1998, Vol. 20 
