Admittance of rectangular waveguide radiating from a conducting cylinder

Author

Bird, Trevor S.

Author_Institution

CSIRO, Epping, NSW, Australia

Volume

36

Issue

9

fYear

1988

fDate

9/1/1988 12:00:00 AM

Firstpage

1217

Lastpage

1220

Abstract

Theory and experiment are compared for the admittance presented to a rectangular waveguide which terminates at an arbitrary angle in the surface of a conducting cylinder. Two methods are described for calculating the admittance: a single-mode approximation from the modal solution and an alternative asymptotic solution. Using these methods, the effect of aperture orientation on admittance, and the results obtained are compared with the experiment. The single-mode approximation is in good agreement with experimental results for the case when the input waveguide supports the TE₁₀ mode only. The accuracy of the approximate formula for waveguide admittance was also verified. The admittance is shown to be weakly dependent on aperture orientation for moderately large cylinders

Keywords

electric admittance; rectangular waveguides; waveguide theory; TE₁₀ mode; admittance; aperture orientation; asymptotic solution; conducting cylinder; rectangular waveguide; single-mode approximation; Admittance; Apertures; Closed-form solution; Magnetic fields; Mutual coupling; Planar waveguides; Propagation constant; Rectangular waveguides; Surface waves; Waveguide components;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.8598

Filename

8598