Ka-Band Hemispherical Dielectric Lens and Horn Assembly for Discrete Beamforming

This paper describes the Design of Ka Band Hemispherical Dielectric Lens and Horn Assembly for Discrete Beamforming. In a Phased array antenna, the challenges in beam forming include high cost, complex architecture and expensive phase shifters. In this paper, an antenna consisting of horn and hemispherical lens assembly is proposed that can achieve beam agility and configurability in beamforming based on feed locations. The design of the antenna is carried out in HFSS, and various parameters such as return loss, directivity are optimized. An improvement of 11 dB in directivity is observed with the designed hemispherical lens.