Increased Bandwidth Evanescent Open-Ended Waveguide Antenna Design Using the Imaginary Smith Chart

Vincent Fusco, Peter Ludlow

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present a novel antenna matching technique that uses the Imaginary Smith Chart to permit wideband matching of an evanescent open-ended waveguide antenna using a dielectric sheet air-spaced from the aperture. The fabricated antenna design is demonstrated to have a measured bandwidth of 24%, from 2.13–2.7 GHz, for reflection coefficient $qquad{<} -!!10~{rm dB}$ , with 2.725 GHz waveguide cutoff. The antenna's maximum aperture dimension is ${< 0.5}lambda_{0}$ at the upper frequency in the bandwidth and so it is suitable for use in a wide angle scanning phased array
Original languageEnglish
Pages (from-to)5423 - 5428
Number of pages6
JournalIEEE Transactions on Antennas and Propagation
Volume60
Issue number11
DOIs
Publication statusPublished - 12 Jul 2012

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