A Survey on Beam Steering Techniques in Printed Antennas

<span>Beam steering antennas is essential part of various WCN (Wireless Communication Networks) such as radar and satellite communication. The increasing demand high data rate, SNR (Signal to Noise Ratio) gain, therefore pattern reconfigurable are required improve properties. </span><span>Beam the technique changing main lobe direction radiation. constructive distractive interference used steer in specific direction. Beam necessary communications localization, satellite, tracking system airborne application.</span><span> antenna decreases power consumption also increases directivity gain. transmit receive signals researchers interested find optimal beam solution for single multi-point application. </span><span>In past techniques achieve antennas. This paper presents, principle their theory, as; Mechanical Steering, Beamforming, Switching Pin Diodes, Reflector array (Reflectarray), Parasitic Phase Shifters, Switched Antennas, Metamaterial Traveling Wave Retro-directive Integrated Lens Antennas (ILAS), merits demerits comparison among techniques.</span>