Reduction of grating lobes for slot antenna array at 60 GHz using multilayer spatial angular filter

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

8 Scopus citations

Abstract

A 2 × 2 planar slot antenna array is designed at 60 GHz. The slots are excited by a printed corporative feeding network based on the ridge gap waveguide (RGW) technology. Such a network, requires more than a full wavelength spacing between the slots, which cause excitation of undesired grating lobes. In order to reduce the grating lobes level, multilayer dielectric superstrates are placed above the slot antenna array. The multilayer superstrates act as a spatial angular filter, which filters out antenna radiation except in the main beam region. In the case of placing the 2×2 array elements, 1.1λ apart, numerical results show that the grating lobes are significantly reduced outside the ± 26° range.

Original languageEnglish
Title of host publication2015 IEEE Antennas and Propagation Society International Symposium, APS 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2043-2044
Number of pages2
ISBN (Electronic)9781479978151
DOIs
StatePublished - 22 Oct 2015
Externally publishedYes

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Volume2015-October
ISSN (Print)1522-3965

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

  • gap waveguide
  • slot array
  • superstrate

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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