Berker ColakZeynep ErtekinMustafa Secmen2025-10-062024978-3-9820397-3-22167-802210.23919/GeMiC59120.2024.10485295http://dx.doi.org/10.23919/GeMiC59120.2024.10485295https://gcris.yasar.edu.tr/handle/123456789/6796This study presents a broadband and compact antipodal Vivaldi antenna design and production having an improved gain characteristic with the addition of a dielectric lens made of PLA. The proposed antenna has measured VSWR of less than 2.1 through the broadband frequency of 3.3-43.5 GHz and has more than 6.5 dBi measured gain above 8.5 GHz (up to 43.5 GHz). The antenna which can fit in a cube with just 4.8 cm edge has low-cost and easy manufacturing. It can meet the need of multiple antennas due to its broad frequency range (from S-band to Ka-band) which covers different applications such as wideband nondestructive material characterization and testing. Since the proposed antenna covers sub-6 GHz (3.3 GHz 5.8 GHz) and mmWave (26 38 41 GHz) 5G frequencies it can be also used in base stations with MIMO or array configuration.EnglishVivaldi antenna, dielectric lens, ultra-wideband, sub-6 GHz 5G, mmWave 5G, material characterizationConference Object