Lightweight 3D printed microwave waveguides and waveguide slot antenna

G. McKerricher, A. Nafe, A. Shamim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

In this work we demonstrate a lightweight 3D printed waveguide and slot antenna. The waveguide is 78% air by weight with a mass of only 2.2 g/cm which is roughly one ninth that of similar sized solid copper/bronze standard waveguide. Interior scaffolding provides structural strength with insignificant dielectric loss. A 3D Systems 5500 MultiJet printer and an acrylic photo-initiated polymer are used to fabricate the structure. This approach provides an extremely smooth surface with 100 nm root mean square surface roughness. Simulations show that a slotted waveguide antenna can achieve an efficiency of 90% with a copper coating. To demonstrate the concept a waveguide and antenna are fabricated using an easily applied but low conductivity coating. Although the coating is about 20 times less conductive than copper the antenna still achieves a good efficiency of 60%. This approach is a step towards realizing low cost lightweight waveguide microwave circuits and antennas for space born and satellite communications.

Original languageEnglish (US)
Title of host publication2015 IEEE Antennas and Propagation Society International Symposium, APS 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1322-1323
Number of pages2
Volume2015-October
ISBN (Electronic)9781479978151
DOIs
StatePublished - Oct 22 2015
EventIEEE Antennas and Propagation Society International Symposium, APS 2015 - Vancouver, Canada
Duration: Jul 19 2015Jul 24 2015

Conference

ConferenceIEEE Antennas and Propagation Society International Symposium, APS 2015
CountryCanada
CityVancouver
Period07/19/1507/24/15

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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