3D printed periodic structures in a horn antenna for side-lobe reduction using direct metal laser sintering

Deepak Shamvedi, Cyril Danilenkoff, Sara Karam, Paul O’Leary, Ramesh Raghavendra

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

    3 Citations (Scopus)

    Abstract

    The research presents a 3D metal printed X-band (8.2-12.4 GHz) horn antenna with side-lobe reduction, achieved by printing pyramidal periodic structures on the inner faces of the antenna’s E-plane. The 3D pyramidal periodic structures result in the suppression of the surface current and hence reduce the side-lobes of the horn antenna. The placement of the periodic structures has been optimized using commercially available electromagnetic simulation software, CST (Computer Simulation Technology), not only for reducing side-lobes, but also for successful 3D metal printing. The beam efficiency of the proposed antenna was measured to be 98.5% at the selected frequency of 12.4 GHz, with an improvement of 8% over the 90.4% simulated beam efficiency of the conventional horn antenna without any periodic structures. The antenna is fabricated using the Direct Metal Laser Sintering (DMLS) technique using Maraging Steel, MS1, on an EOSINT M280 system.

    Original languageEnglish
    Title of host publicationLoughborough Antennas & Propagation Conference (LAPC 2017)
    PublisherIEEE
    Pages1-4
    Number of pages4
    ISBN (Electronic)9781785617003
    ISBN (Print)9781785616990
    DOIs
    Publication statusPublished - 24 May 2018
    EventLoughborough Antennas and Propagation Conference, LAPC 2017 - Loughborough, United Kingdom
    Duration: 13 Nov 201714 Nov 2017

    Conference

    ConferenceLoughborough Antennas and Propagation Conference, LAPC 2017
    CountryUnited Kingdom
    CityLoughborough
    Period13/11/1714/11/17

    Keywords

    • 3D printing
    • Additive Manufacturing
    • Horn antenna
    • Periodic structures
    • Side-lobe reduction

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