Partially dielectric loaded planar Vivaldi array antenna for forward-looking GPR applications

ÇALIŞKAN A., Hoşgör Y., TÜRK A. S., KIZILAY A.

Microwave and Optical Technology Letters, vol.66, no.1, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 66 Issue: 1
  • Publication Date: 2024
  • Doi Number: 10.1002/mop.33928
  • Journal Name: Microwave and Optical Technology Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Keywords: array antenna, partial dielectric load, planar Vivaldi antenna, ultra-wide band
  • Yıldız Technical University Affiliated: Yes

Abstract

This paper presents a novel two-element partially dielectric loaded planar Vivaldi antenna array for ultra-wideband applications. This array is capable of operating between 380 MHz and 3 GHz and is designed on a 1.6-mm thick low-cost FR4 substrate with total size of 25 × 330 × 430 mm3. Innovative approaches to various gain enhancement techniques such as partial dielectric loading, corrugations, and U-shaped back reflector used for planar Vivaldi antennas, are collectively employed in this design. Various elements of the array are interconnected. The two-element Vivaldi array is fed by using a power divider. The array is designed by using a full-wave three-dimensional EM simulation tool. The designed antenna is manufactured and then measured. The simulation and measurement results are found to be consistent with each other.