Reducing standing waves in quasi-optical systems by optimal feedhorn design

Paul A. S. Cruickshank, David R. Bolton, Duncan A. Robertson, Richard J. Wylde, Graham M. Smith

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Citations (Scopus)

Abstract

Standing waves between transmit and receive feedhorns in quasi-optical systems often limit the achievable performance of mm-wave and sub-mm-wave instrumentation. Even with high performance corrugated feedhorns and perfect frequency independent optics, significant standing waves can occur because of the resonant build-up of higher order modes between feedhorns. In this paper we describe a new design of wideband corrugated feedhorn that significantly reduces standing wave effects, is scalable to any frequency, is shorter than standard horns and is suitable for a wide range of optical configurations. In addition it produces far-field beam patterns with much reduced sidelobes. We will describe the theory behind this new feedhorn design, outline scaling laws and present experimental results confirming the analysis.

Original languageEnglish
Title of host publication2007 Joint 32ND International conference on Infrared and Millimeter Waves and 15TH International Conference on Terahertz Electronics
Place of PublicationNEW YORK
PublisherIEEE
Pages922-923
Number of pages2
Volume1 and 2
ISBN (Print)9781424414383
DOIs
Publication statusPublished - 2007
EventJoint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics - Cardiff
Duration: 3 Sept 20079 Sept 2007

Conference

ConferenceJoint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics
CityCardiff
Period3/09/079/09/07

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