Rigorous TE solution to the dielectric wedge antenna fed by a slab waveguide

Document Type

Article

Publication Date

12-1-2006

Abstract

A rigorous TE solution to the dielectric wedge antenna fed by a slab waveguide of the same material is presented. The method of solution involves modeling the wedge as a sequence of step discontinuities and uses an iterative procedure to track forward and backward partial wave fields, expressed as modal ex-., pansions, to obtain the rigorous field solution. Radiation patterns of directive gain are presented. All patterns smoothly decrease from a maximum in the endfire direction and exhibit extremely low side lobe levels. Longer length wedges or smaller dielectric constant materials are shown to produce higher directivity and smaller half-power beamwidths. For slender, gradually tapered wedges, the reflection coefficient of the guided (surface) wave at the input to the wedge is very small indicating a low VSWR for tapered dielectric antennas and there appears to be no gain limitation with antenna length for these antennas. © 2006 IEEE.

Identifier

33645702813 (Scopus)

Publication Title

IEEE Transactions on Antennas and Propagation

External Full Text Location

https://doi.org/10.1109/TAP.2005.861533

ISSN

0018926X

First Page

101

Last Page

113

Issue

1

Volume

54

Grant

DAAL 03-91-C-0034

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