Analysis and Design of a Circularly-Polarized Planar Leaky-Wave Antenna

Davide Comite, S. K. Podilchak, Paolo Baccarelli, Paolo Burghignoli, Alessandro Galli, Alois P. Freundorfer, Yahia M. M. Antar

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

1 Citation (Scopus)
33 Downloads (Pure)

Abstract

We present the design and analysis of a K-band radially-periodic leaky-wave antenna radiating a circularly polarized broadside pencil beam. The structure is constituted by a metallic strip grating printed on top of a single-layer grounded dielectric slab, and is fed on the bottom by means of a square array of printed surface-wave launchers. The structure is optimized to support the fast n = -1 spatial harmonic, whose behavior has been accurately characterized through a full-wave dispersive analysis developed by means of an in-house method-of-moments (MoM) code. By proper phasing the four independent feeding points, linear or circularly polarized pencil beams can be obtained by exciting a dominant but weakly-attenuated, cylindrical TM leaky-wave mode. In this way, highly-directional broadside pencil beams showing good polarization purity can be obtained. The proposed design is of interest for modern satellite and terrestrial point-to-point communications.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
PublisherIEEE
Pages2133-2134
Number of pages2
ISBN (Electronic)9781538671023
DOIs
Publication statusPublished - 14 Jan 2019

Publication series

NameIEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
PublisherIEEE
ISSN (Electronic)1947-1491

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation
  • Radiation

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