MetaPSO-based design of the frequency behavior of a beam scanning linear array

In this paper, we present the results relative to the optimization of a linear array that has to guarantee a defined radiation pattern, with tilting of the angle of maximum radiation on two different frequency bandwidths. The optimization has been carried out using an enhanced version of the particle swarm optimization (PSO) named MetaPSO introduced recently by the authors, and adopting as free parameters the amplitude and the phase of the excitation coefficients and the array element position.