Multi-criteria optimization of non-uniform linear antenna array using genetic algorithms

The paper presents a new approach regarding the design of non-uniform linear antenna arrays with symmetrical elements, using multi-criteria optimization with genetic algorithms. The goal is to optimize the radiation pattern to bring it closer to the desired one, using non-uniform distances between elements and a non-uniform distribution of currents through the elements, for better efficiency. The work results and the paper conclusions reveal consistent advantage of our approach versus the uniform array, as doubled sidelobe attenuation and lower number of elements for similar performance. Also an important result is the reduction of the number of variables in the fitness function from 2N to 2, which creates good premises for the implementation of real-time algorithms useful in complex/dynamic adaptive arrays.