Superstrate-Based Beam Scanning of a Fabry-Perot Cavity Antenna

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19 Scopus citations

Abstract

Incorporating phased array technique to scan the main beam of a Fabry-Perot cavity (FPC) antenna produces sidelobes proportional to the scan angle. An alternative dielectric-ferrite superstrate-based scan mechanism with controlled sidelobe level is presented in this letter. A beam scan of 24 ° is demonstrated by axially magnetizing the ferrite part of the superstrate with Δ H} = 0.25~ T. Stepped dielectric part of the superstrate is optimized to reduce the sidelobe level of the FPC antenna by 4.49 dB. The fabricated antenna is tested to verify the simulated radiation patterns and reflection responses. The requirement of magnetic biasing can be considerably reduced using LTCC technology, where biasing coils are embedded within the ferrite superstrate.

Original languageEnglish
Article number7322187
Pages (from-to)1187-1190
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume15
DOIs
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

  • Antenna
  • Fabry-Perot
  • beam scan
  • ferrite
  • superstrate

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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