Cutoff frequencies of circular waveguide loaded with eccentric dielectric cylinder

Author

Ragheb, H.A. ; Sebak, A. ; Shafai, L.

Author_Institution

Dept. of Electr. Eng., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia

Volume

144

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

7

Lastpage

12

Abstract

The cutoff frequencies of a conducting circular waveguide loaded eccentrically by a cylinder are calculated. Analytical formulations are developed based on the boundary value method. The cutoff wavenumbers are then calculated as roots of the resulting characteristic determinant. Even and odd hybrid modes are considered and the cutoff frequencies calculated for both cases. Several examples for special cases are introduced for comparison followed by other general examples. The case of a dielectric-filled circular waveguide with an eccentric air core is also examined

Keywords

boundary-value problems; circular waveguides; dielectric-loaded waveguides; waveguide theory; analytical formulations; boundary value method; characteristic determinant; circular waveguide loaded; cutoff frequencies; cutoff phase constants; cutoff wavenumbers; dielectric-filled circular waveguide; eccentric air core; eccentric dielectric cylinder; even hybrid modes; odd hybrid modes; roots;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19970800

Filename

587059