Compromise pattern synthesis by means of optimized time-modulated array solutions

In this paper, the potentialities of time-modulation are further investigated in the framework of compromise array synthesis as an alternative solution to standard compromise methods. More in detail, starting from a set of static excitations aimed at synthesizing a user-defined sum pattern at the carrier frequency, a compromise difference beam is generated through a suitable sub-arraying pattern matching procedure by optimizing the pulse durations at the input ports of each sub-array. Successively, the unavoidable SR at the harmonic frequencies is minimized by applying a particle swarm optimization to set the switch-on time instants of each time sequence.