Compound radiating slots in a broad wall of a rectangular waveguide

Author

Rengarajan, Sembiam R.

Author_Institution

Dept. of Electr. & Comput. Eng., California State Univ., Northridge, CA, USA

Volume

37

Issue

9

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

1116

Lastpage

1123

Abstract

An analysis is presented of the characteristics of a broad wall radiating slot, offset from the center line and tilted with respect to the longitudinal axis of a rectangular waveguide. Pertinent integral equations are developed, taking into account finite wall thickness, and are solved for the slot aperture E-field using the method of moments. Compound slot characteristics are then deduced, including resonant length and dominant mode scattering. Numerical results for the scattering from resonant slots are presented over a range of offsets, tilt angles, frequencies and waveguide dimensions. For resonant compound slots, offset and tilt are shown to control the aperture electric-field amplitude with a phase variability of 360°. The results have significant applications in the design of compound slot arrays

Keywords

antenna theory; rectangular waveguides; waveguide antennas; waveguide theory; aperture electric-field amplitude; broad wall radiating slot; dominant mode scattering; finite wall thickness; integral equations; method of moments; offset; phase variability; rectangular waveguide; resonant compound slots; resonant length; slot aperture E-field; slot arrays; tilt angles; waveguide antenna; waveguide dimensions; Apertures; Frequency; Helium; Integral equations; Linear antenna arrays; Moment methods; Rectangular waveguides; Resonance; Scattering; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.35791

Filename

35791