Novel Ғ-Slotted Wideband Antenna for Sub-6 GHz 5G Applications and Gain Enhancement using Freuency-Selective Surface

Articles in Press

Document Type : Research Article

Authors

1 Department of ECE, Jaipur National University, Jaipur, India

2 Department of ECE, Parul Institute of Engineering and Technology, Parul University, Vadodara, Gujarat, India

10.24200/sci.2026.67495.10643

Abstract

This paper presents an antenna operating from 3.44 to 6.45 GHz, integrated with a frequency-selective surface (FSS) to enhance gain. The physical size of the antenna is 22 × 29 × 0.8 mm³, and the electrical size is 0.249λ × 0.329λ × 0.009λ at 3.4GHz. The antenna geometry consists of a modified elliptical patch with a ‘Ғ’ slot and a stepped slotted partial ground plane, which helps achieve a wideband response. The maximum gain of the antenna is 4 dBi. Furthermore, to enhance the antenna's gain and improve the bandwidth, a modified cross-shaped frequency-selective surface structure with a 4×4 array is designed and fabricated. The total dimensions of the unit cell and 4×4 array are 18 mm × 18 mm and 80 mm × 80 mm, respectively. This FSS is positioned at an optimized distance of H = 22.2 mm from the antenna to achieve high gain and maintain a wideband response. Using FSS, an improvement in gain is observed, with a maximum of 8.62 dBi. Additionally, an improvement in the bandwidth is observed. The FSS extended the bandwidth from 3.18 GHz to 6.40 GHz. The prototype of the suggested antenna and FSS has been fabricated and tested, and the results indicate that the simulated and measured values match closely, except for minor deviations due to fabrication and testing tolerances.

Keywords

Main Subjects

Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 10 June 2026

Files

History

  • Receive Date: 02 August 2025
  • Revise Date: 05 February 2026
  • Accept Date: 05 May 2026

Share

How to cite

Statistics