Title :
Role of complex modes in modeling discontinuities of dielectric loaded waveguides
Author :
Chen, S.-W. ; Chen, C. ; Zaki, K.A.
Author_Institution :
Electr. Eng. Dept., Maryland Univ., College Park, MD, USA
Abstract :
It is shown that modeling of step discontinuities in cylindrical dielectric loaded waveguides excited in hybrid modes using mode matching cannot converge unless complex modes are included in the field expansions. If the parameters of the structure and operating frequency allow the existence of complex modes, then the purely propagating and purely evanescent mode fields are not a complete set, unless complemented by the complex mode fields.<>
Keywords :
dielectric-loaded waveguides; waveguide theory; complex modes; cylindrical dielectric; dielectric loaded waveguides; discontinuities; field expansions; hybrid modes; mode matching; operating frequency; purely evanescent mode; step discontinuities; Dielectrics; Educational institutions; Equations; Finline; Frequency; Loaded waveguides; Nonuniform electric fields; Propagation constant; Waveguide discontinuities; Waveguide junctions;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22014
