Journal of Microwaves, Optoelectronics and Electromagnetic Applications (May 2024)

Design of an Antipodal Vivaldi Antenna Using RSIW Technology

  • Priscilla Kadja P. de M. Carneiro,
  • Maraiza Prescila dos Santos,
  • Alfredo Gomes Neto,
  • Alexandre Jean R. Serres,
  • Adolfo F. Herbster

DOI
https://doi.org/10.1590/2179-10742024v23i2280519
Journal volume & issue
Vol. 23, no. 2

Abstract

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Abstract This paper proposes a methodology for developing antipodal Vivaldi antennas using RSIW (Ridge Substrate Integrated Waveguide) technology for a specific cut-off frequency. The technique employs metallic-vias and metalized cylindrical posts of reduced sizes inserted in the dielectric substrate. The simulations were performed using the ANSYS® Electronics Desktop software. The antenna RSIW is designed for a resonant frequency of 4 GHz and was fabricated on FR4 (ɛr=4.4 and tanδ=0.02). The structure is compared to an antipodal Vivaldi antenna (AVA) fed by a SIW. The structure proposed had an increase in bandwidth of 4.09 GHz and an increase in gain of 1.41 dBi.

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