A sidelobe level reduction (SLL) for planar array antennas

The application of the genetic algorithms to the optimization of planner array weights will be investigated. The aim is to adjust the weights coefficients of the array elements to achieve a minimum sidelobe level (SLL) with narrower beam width. The peak (PSL) sidelobe level of the synthesized beam pattern has been successfully lowered. The results are compared with synthesized pattern using Gaussian, Kaiser, Hamming and Blackman weights coefficients and gives a significant improve for a peak sidelobe level (PSL). The minimum achieved peak sidelobe level (PSL) is -32 dB for beam width of 16deg and -22.82 dB for beam width of 12deg.