Side lobe level reduction in antenna array using weighting function

Phased array antennas are generally used for the inherent flexibility to steer the beam electronically and also the need for specialized multi-function radar systems. In the antenna arrays the side lobe level is main problem which causes the wastage of energy. In this paper a different windowing techniques are used to suppress the side-lobes in linear, planar and circular array antennas, by varying the various parameters like number of antenna elements, scan angle, element spacing and window coefficients. The result of antenna gain pattern has been simulated by applying Kaiser, Hamming, Hann and Blackman window. It is revealed that the Blackman window is better for reduction of side lobe in analyzing linear, rectangular and circular array antennas.