Abstract

In this paper, we propose a randomized algorithm for the synthesis of a thinned planar antenna (TPA) array that generates a radiation pattern with maximum reduction in peak side lobe level (PSLL). The key purpose of this paper is to achieve a Peak side lobe level (PSLL), equal to or less than -25dB. A Modified Binary Coded GA (MBC-GA) is formulated to find out optimum positions of active and inactive elements by randomly switching on and switching off elements in random position to attain the suppressed peak side lobe level (PSLL). A randomized Crossover and mutation techniques are formulated and included in normal BCGA to devise the MBC-GA. For validating the effectiveness of proposed method, a 12x12 TPA is taken into consideration in present study. Their results are put side by side with the previously proposed works containing similar design specifications. Comparison exhibits the superiority of our method in reducing of peak side lobe levels at bore sight.