Performane Analysis of Linearly-arranged Concentric Circular Antenna Array Using Robust ODL technique

In the modern world, the smart antenna is widely used in radar, seismology, sonar, astronomy underground communication technology, and many more applications. A smart antenna with high directivity, narrow beam-width, low sidelobe levels, and false signal termination is the eminent condition for advanced communication technology. But to design, an antenna array with such characteristics is a challenge. Considering all this problem, Linearly-arranged Concentric Circular Antenna Array (LCCAA) beamformer is proposed and simulates it with robust optimal diagonal loading (ODL) technique. in this paper. It is observed from the performance analysis it is observed that the proposed beamformer under robust techniques provides better performance with respect to conventional technique analyzing beamwidth, sidelobe level, power pattern, and SINR variation with SNR performances. In this paper optimal, FDL and ODL robust technique are used where the ODL technique shows the smallest SINR variation around 2.85 dB, 2.94 dB & 3.105 dB for 1°, 2° & 3° disparity accordingly.