Variational analysis of inclined slots in the narrow wall of a rectangular waveguide

Author

Jan, Cheng-Geng ; Wu, Ruey-Beei ; Hsu, Powen

Author_Institution

Dept. of Electron., Chung Shan Inst. of Sci. & Technol., Lung-Tan, Taiwan

Volume

42

Issue

10

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

1455

Lastpage

1458

Abstract

A variational analysis for calculating the admittance of the inclined slots in the narrow wall of a rectangular waveguide is presented. The analysis uses the 90° wedge Green´s function to model the scatterings off the waveguide corners and assumes an equiphase half-cosinusoidal electric field distribution along the slot aperture. Based on these, a variational equation is derived for the reflection coefficient due to the slot discontinuity, from which the slot admittance is calculated. Through comparisons between the computed results and the literature results, the analysis is found to be accurate, reliable, and efficient

Keywords

Green´s function methods; antenna accessories; antenna theory; convergence of numerical methods; electric admittance; electromagnetic wave reflection; electromagnetic wave scattering; microwave antenna arrays; rectangular waveguides; slot antennas; variational techniques; waveguide antennas; waveguide theory; Green´s function; admittance; equiphase half-cosinusoidal electric field distribution; inclined slots; narrow wall; rectangular waveguide; reflection coefficient; scattering; slot admittance; slot aperture; slot discontinuity; variational analysis; variational equation; waveguide corners; Admittance; Apertures; Councils; Equations; Moment methods; Rectangular waveguides; Reflection; Resonance; Scattering; Waveguide components;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.320755

Filename

320755