Optimization for Subarray Weighting of a Phased Array Antenna Using Genetic Swarm Optimization

In the case of a phased array antenna to which subarrays are applied, the application of Taylor weighting is limited because the phase center of each subarray is an aperiodic array environment. Therefore, in this paper, we propose a method for optimizing the weighting of each subarray of phased array antennas using Genetic Swarm Optimization (GSO). As a result of optimization of the weighting of each subarray using GSO, the peak sidelobe level when the beam is steered in the boresight direction is 22.3 dB. When the beams were steered at 5° and 10° in the azimuth and elevation directions, respectively, the sidelobe levels were 20.4 dB, 20.9 dB, and-13.1 dB and-13.4 dB.