A Wideband Antipodal Vivaldi Antenna

This paper presents the design of a antipodal Vivaldi antenna (AVA) with wideband. The plated through vias (PTH) are incorporated in AVA for performance enhancement. The proposed AVA with vias (AVA-V) is fabricated on Roger’s RO4003 substrate and its size is 45 mm × 20 mm × 0.8 mm. The PTH vias have improved the conventional CAVA peak gain by 11.4 dBi. The AVA is designed to provide a very wide bandwidth of 165.85% and its range is from 4.2 GHz to 45 GHz. Next, the feeding structure of the ground is also changed for further antenna parameter enhancement. The AVA-V results depict that the proposed antenna can be used for various wireless communication applications like ultra-wideband (UWB), 5G technology, radar, Ka-band, and so on.