Abstract
<span>Beam steering antennas is essential part of various WCN (Wireless Communication Networks) such as radar and satellite communication. The increasing demand of high data rate, high SNR (Signal to Noise Ratio) and high gain, therefore pattern reconfigurable antennas are required to improve such properties. </span><span>Beam steering is the technique of changing the main lobe direction of radiation. The constructive and distractive interference are used to steer the lobe in specific direction. Beam steering is necessary in various communications such as localization, satellite, tracking system and airborne application.</span><span> Beam steering antenna decreases interference and power consumption and also increases directivity and gain. Beam steering antenna transmit and receive signals in specific direction. </span><span>Beam steering antenna decreases interference and power consumption and also increases directivity and gain. The researchers are interested to find optimal beam steering solution for single and multi-point application. </span><span>In past various techniques are used to achieve beam reconfigurable antennas. This paper presents, beam steering principle and their theory, beam steering techniques such as; Mechanical Steering, Beamforming, Switching Pin Diodes, Reflector and array antenna (Reflectarray), Parasitic Steering, Phase Shifters, Switched Beam Antennas, Metamaterial Antennas, Traveling Wave Antennas, Retro-directive Antennas, Integrated Lens Antennas (ILAS), merits and demerits and comparison among various techniques.</span>
Highlights
Beam steering is the technique of changing the main lobe direction of radiation
The constructive and distractive interference are used to steer the lobe in specific direction
Beam steering is necessary in various communications such as localization, satellite, tracking system and airborne application [1,2,3,4]
Summary
Beam steering is the technique of changing the main lobe direction of radiation. To avoid such problem reconfigurable pattern is used to focus the beam in the direction of Device-2 and avoid remain two signals [5]. Various techniques are discussed which is used for beam steering in past.
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More From: International Journal of Recent Contributions from Engineering, Science & IT (iJES)
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