Synthesis of Cosecant and Square Patterns for EMC applications

Many researchers made an attempt on Beam shaping of antennas useful for different applications in surveillance and tracking radars. In the present work, synthesis of line source and linear antenna array with uniform current amplitudes and weight functions is discussed. An iterative sampling method approach is being considered for implementation. In an iterative method, original radiation pattern which is close to the desired radiation pattern is generated by a standard synthesis method and a series of correction patterns are applied to it by adding correction patterns until the convergence is achieved. The iterative method is implemented for both line source and linear array for generating cosecant and square radiation patterns and their results are compared. The patterns designed are found to exhibit minimum suitable levels and they are useful to instigate the problems of EMC.