Antipodal Vivaldi Antenna for 5G Devices

Abstract

In this paper, a single patch Antipodal Vivaldi Antenna (AVA) is designed for the improvement of gain in wideband 5G communications. The AVA has the copper at the bottom which acts as ground and copper layer at the top acts as a radiator. As the AVA flares has continuous tapering (exponential shape), it is called as tapered slot antenna. The performance of AVA is enhanced by incorporating corrugations and dielectric lens (DL). At first, corrugations are inserted to improve the frequency response. After this dielectric lens of trapezoidal shape is implemented to boost the antenna gain. The AVA with corrugations and DL (AVA-CDL) size is $60\ \text{mm} \times 24.1 \text{mm}$. It's below −12.6 dB impedance bandwidth is 23 GHz to 29 GHz which covers 28 GHz band of 5G applications. The proposed AVA provides an improved gain in the range of 2.12 dBi to 9.8 dBi and it can be used for 5G devices.