The Novel Antipodal Vivaldi Antenna with Improved Gain

Abstract

Antennas, which are positioned in environments where all sorts of wireless communication exist, are a fundamental building component of today's communication systems. There are several varieties of antenna structures, each of which operates in a particular frequency spectrum.  One of these is the Vivaldi antenna structure, which is commonly used in ultra-wideband systems (UWB). The Vivaldi antenna's exceptional qualities make it ideal for broadband applications. Vivaldi antenna designs have evolved throughout time. The novel antipodal Vivaldi antenna is presented. The designed antenna has a compact size which is 40 × 40 × 1.6 mm³. The antenna employs FR4 dielectric material, characterized by a dielectric constant of 4.4 and a tangent loss value of 0.02. The sin-wave edge is applied to the conventional antipodal antenna to increase the gain of the antenna. The results show that the proposed antenna has a higher gain value than the conventional antipodal antenna, with a value of nearly 0.8 dBi. The suggested innovative antenna is applicable in diverse UWB applications.