DocumentCode :
1187014
Title :
Mode-matching analysis of a shielded rectangular dielectric-rod waveguide
Author :
Wells, Colin G. ; Ball, James A R
Author_Institution :
Dept. of Eng., Univ. of Southern Queensland, Toowoomba, Qld., Australia
Volume :
53
Issue :
10
fYear :
2005
Firstpage :
3169
Lastpage :
3177
Abstract :
Rectangular cross-sectional dielectric waveguides are widely used at millimeter wavelengths. In addition, shielded dielectric resonators having a square cross section are often used as filter elements; however, there is almost no information available on the effect of the shield. Rectangular or square dielectric waveguide is notoriously difficult to analyze because of the singular behavior of the fields at the corners. Most published analyses are for materials with a low dielectric constant, and do not include the effects of a shield. This paper describes a numerically efficient mode-matching method for the analysis of shielded dielectric-rod waveguide, which is applicable to both low and high dielectric-constant materials. The effect of the shield on the propagation behavior is studied. The shield dimensions may be selected such that the shield has a negligible effect so that results can be compared with free-space data. The results are verified by comparison with several sets of published data, and have been confirmed by measurement for a nominal εr of 37.4.
Keywords :
dielectric resonators; dielectric waveguides; electromagnetic shielding; mode matching; permittivity; rectangular waveguides; waveguide theory; high dielectric-constant materials; low dielectric-constant materials; mode-matching analysis; propagation behavior; shielded dielectric resonators; shielded rectangular dielectric-rod waveguide; shielding effects; square dielectric waveguide; Dielectric materials; Dielectric measurements; Electromagnetic waveguides; Load flow; Millimeter wave integrated circuits; Millimeter wave technology; Mode matching methods; Optical resonators; Optical waveguides; Rectangular waveguides; Dielectric resonators; dielectric waveguides; electromagnetic propagation in nonhomogeneous media; mode-matching methods; shielding;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2005.855148
Filename :
1516321
Link To Document :
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