Moment method analysis of sidewall inclined slots in rectangular waveguides

Author

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

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

39

Issue

1

fYear

1991

fDate

1/1/1991 12:00:00 AM

Firstpage

68

Lastpage

73

Abstract

The main feature is the use of a 90° wedge Green´s function to model the external coupling between the parts of the slot in the narrow and broad walls of the waveguide. The aperture field distributions of the inclined slots are solved directly. It is found that for resonant slots, the aperture field is approximately of constant phase, while its amplitude is nearly sinusoidal but with a slight tilt. From the field distribution, various characteristics of the slot can be extracted, such as the conductance, susceptance, and resonant length. The numerical computations are in good agreement with experimental results available in the literature

Keywords

Green´s function methods; antenna arrays; antenna theory; waveguide antennas; 90° wedge Green´s function; aperture field distributions; broad walls; conductance; constant phase; field distribution; moment method analysis; narrow walls; rectangular waveguides; resonant length; resonant slots; sidewall inclined slots; slot antennas; susceptance; Antenna arrays; Apertures; Distributed computing; Geometry; Green´s function methods; Moment methods; Receiving antennas; Rectangular waveguides; Resonance; Waveguide components;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.64437

Filename

64437