Abstract
In electronic warfare and surveillance systems radars with 360° coverage area are needed. Antenna arrays which are capable of complete coverage in both azimuth plane and elevation plane are required for beam steering. For that purpose, phased array antennas which can steer the beam electronically in 360° are used but here the complex feed network will introduce negative effects on array performance. In this communication, a new technique is proposed to steer the antenna beam without any complex feed network and phase shifters. Detailed development steps for the design of an L Band cuboid antenna array are presented for the frequency of 1.35 GHz. Antenna element and beam-forming technique are explained. By using proposed cuboid array geometry and beam steering technique 360° beam steering is achieved in azimuth plane and 180° beam steering is achieved in elevation plane. Different cases for achieving beam steering by exciting the antenna element in the cuboid antenna array arrangement are presented.
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