Horn Array Antenna Design for Ku-Band Applications

Abstract

In recent years designing array antenna at microwave and millimeter wave frequencies for commercial and military purposes have become popular. The designed feed network causes losses. As frequency increases, losses caused by tangent losses of substrate and roughness of microstrip line increase drastically, especially in microstirp antenna array structures. In this study, we benefited from bandwidth and extremely low loss characteristic of pyramid horn antenna during the design of this antenna, It was designed a rectangular waveguide that will operate between 14 and 14.5 GHz propagating with TE10 mode at the same time has sufficient small dimensions to be able to suppress higher order modes. The feed network consists of rectangular E-plane waveguide power dividers. To overcome grating lobe problems caused by distance between any unit elements that was selected for mechanical issues, it was used grid structure for every unit. The antenna designed by using CST STUDIO SUITE that uses time domain computational electromagnetics.