Safpbri Johari, Mohd Najib Mohd Yassin, Arif Marwardi Ismail, Nurhayati Nurhayati
Conventional Antipodal Vivaldi Antenna (AVA) suffers from limited gain, especially at high frequencies. This paper addresses this challenge by proposing a compact AVA design of 1.28λ0 × 0.91λ0 × 0.18λ0 at 3.5 GHz that achieves significant gain enhancement. The design utilizes strategically placed parasitic elements to manipulate current distribution and a custom metasurface lens to optimize the wavefront. Simulations demonstrate substantial gain improvement compared to a conventional AVA across a wide frequency range. This approach offers a promising solution for high-gain, wideband AVA suitable for long-range and focused signal transmission applications. © 2024 Institute of Physics Publishing. All rights reserved.
Communication Engineering (ACE), Centre of Excellence Faculty of Electronic Engineering & Technology, Universiti Malaysia Perlis, Perlis, Arau, Malaysia; Department of Electrical Engineering, Universitas Negeri Surabaya, Surabaya, Indonesia
