Sidewall inclined slot in a rectangular waveguide: theory and experiment

Prakash, V. V. S. ; Christopher, S. ; Balakrishnan, N. (1998) Sidewall inclined slot in a rectangular waveguide: theory and experiment IEE Proceedings - Microwaves, Antennas and Propagation, 145 (3). pp. 233-238. ISSN 1350-2417

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Official URL: http://digital-library.theiet.org/getabs/servlet/G...

Related URL: http://dx.doi.org/10.1049/ip-map:19981956

Abstract

A novel analysis is used to compute the admittance characteristics of the slots cut in the narrow wall of a rectangular waveguide, which includes the corner diffraction effects and the finite waveguide wall thickness, is presented. A coupled magnetic field integral equation is formulated at the slot aperture which is solved by the Galerkin approach of the method of moments using entire domain sinusoidal basis functions. The externally scattered fields are computed using the finite difference method (FDM) coupled with the measured equation of invariance (MEI). The guide wall thickness forms a closed cavity and the fields inside it are evaluated using the standard FDM. The fields scattered inside the waveguide are formulated in the spectral domain for faster convergence compared to the traditional spatial domain expansions. The computed results have been compared with the experimental results and also with the measured data published in previous literature. Good agreement between the theoretical and experimental results is obtained to demonstrate the validity of the present analysis.

Item Type:Article
Source:Copyright of this article belongs to The Institution of Electrical Engineers.
Keywords:Rectangular Waveguide; Sidewall Inclined Slot; Admittance Matrix; Narrow Wall; Experiment; Corner Diffraction Effects; Finite Waveguide Wall Thickness; Coupled Magnetic Field Integral Equation; Slot Aperture; Galerkin Approach; Method of Moments; Entire Domain Sinusoidal Basis Functions; Externally Scattered Fields; Finite Difference Method; Measured Equation of Invariance; Closed Cavity; Spectral Domain; Convergence; Measured Data; Array Antennas
ID Code:64456
Deposited On:10 Oct 2011 06:46
Last Modified:30 Jan 2023 07:52

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