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Journal ArticleDOI

Hybrid method of analysis of slot discontinuity in a rectangular waveguide and the validity of circuit representation

TL;DR: In this article, a novel analysis to compute the admittance characteristics of the slots cut in the narrow wall of a rectangular waveguide (also called edge slot) is presented, where the slot aperture field is expanded in terms of entire domain sinusoidal basis functions and solved using Galerkin's method.
Abstract: A novel analysis to compute the admittance characteristics of the slots cut in the narrow wall of a rectangular waveguide (also called edge slot) is presented. The slot aperture field is expanded in terms of entire domain sinusoidal basis functions and is solved using Galerkin's method. The computed results have been compared with the measured data published in the previous literature to validate the present analysis. The validity of representing the edge slot as a shunt element is examined and an alternate way of representing the edge slot is suggested as being more accurate.
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TL;DR: A survey of the published literature in the area of waveguide-fed slot radiators, which includes longitudinal / transverse broadwall radiating slots, dielectric filled/ covered slots, compound/centred-inclined radiates slots, narrow wall slots, ridged waveguide slots, etc.
Abstract: Waveguide-fed slot radiators are widely used in several strategic applications. The published literature in this area is vast, spanning a period of nearly 50 years. There is a need for consolidating the information and present it at a glance, to aid future research. The purpose of this article is to present a survey of the published literature in the area of waveguide-fed slot radiators. Specifically, the topics covered include longitudinal / transverse broadwall radiating slots, dielectric filled/ covered slots, compound/centred-inclined radiating slots, narrow wall slots, ridged waveguide slots, etc. This survey does not include the literature on the array design, as it would have resulted in limiting the information on the slot radiators. Besides, it is felt that the slot array analysis and design techniques would merit a survey of their own.

2 citations