A new equivalent network method for analyzing discontinuity properties of open dielectric waveguides
Abstract
A novel network approach is proposed for analyzing interacting discontinuities on open planar dielectric waveguides by accurately taking account of both surface modes and waves with continuous spectra. In this approach, a continuum of the radiation wave is recomposed into a set of the newly defined spectral composite modes, each of which carries a finite magnitude of radiation power, These new modes, in conjunction with surface modes, construct the complete orthonormal set for expressing an arbitrary local field on a dielectric slab waveguide. This leads to an equivalent network approach effective for solving discontinuity problems, even on an open waveguide using the conventional method for closedwaveguide problems. A number of numerical results are shown to demonstrate the usefulness of the proposed approach.
 Publication:

IEEE Transactions on Microwave Theory Techniques
 Pub Date:
 January 1989
 DOI:
 10.1109/22.20015
 Bibcode:
 1989ITMTT..37....3S
 Keywords:

 Corrugating;
 Dielectrics;
 Insertion Loss;
 Network Analysis;
 Radiation Distribution;
 Waveguides;
 Electric Fields;
 Magnetic Fields;
 Matrices (Mathematics);
 Radiation Spectra;
 Wave Scattering;
 Electronics and Electrical Engineering