Phase only pattern synthesis for antenna array using genetic algorithm for radar application

The present paper describes the phase only pattern synthesis for the active phased array antenna using genetic algorithm. The phase only synthesis is required to broaden and shape the beam in transmit mode of operation where all elements are fed through the saturated power of transmit/receive modules (TRM). This technique is very useful in multifunctional radar application where broadened beam can occupy more search volume (reduction in frame time). The real coded genetic algorithm (GA), which has ability to find solution of complex problems, has been exploited to get the required shaping of the beam. GA based software is a high performance optimizer and is very easy to understand and implement.