Novel Synthesis of Shared Aperture Antenna Array Exploiting Concurrently Serving Radiators for Individual Functionality

In this study, the authors proposed a novel strategy for the synthesis of a shared aperture antenna (SAA) array. The functional diversity is obtained by populating the antenna radiators functioning at two different frequencies into a single antenna aperture. To compute the most effective arrangement for spacings of elements of the same frequency and elements of different frequencies agreeing to required patterns, authors employed inertia weighted particle swarm optimization (IW-PSO). Two randomly spaced antenna (RSA) arrays composed of 78- and 400-antenna radiators operating at 5 and 10 GHz frequencies are interspersed into the single aperture, and analyzed numerically in order to demonstrate the functioning of the proposed synthesis approach.