Linearly-arranged Concentric Circular Antenna Array Beamformer Using Tapering Technique

Linearly-arranged Concentric Circular Antenna Array (LCCAA) beamformer is proposed in this paper. The Conventional technique is mainly used to analyze the performance of the proposed structure and the performance is compared with the existing beamformers. It is observed that the proposed structure provides superior performance by reducing side lobe level (SLL), beamwidth and eradicating the possibility to receive false signal. Moreover, improved performance is noticed compared to the circular structure. Tapering techniques are also used for this proposed structure to reduce the SLL of the proposed structure. Simulation result of this paper indicates that the proposed structure works well for the hamming window.