Ultrabroadband 1×8 Vivaldi Array for Beam Steering Applications

In this paper, we present a 1×8 array Vivaldi antenna for broadband beam steering applications. The Vivaldi antenna element offers a very wide bandwidth in a single feeding configuration with a lower first resonant frequency of 4.2 GHz and an upper frequency of 37.2 GHz. Each element of the antenna offers a low gain and therefore can produce wide angle fan beam steering.