Energy focusing through layout-based frequency-diverse arrays

This paper offers a computationally efficient strategy for the delicate analysis of frequency-diverse arrays. This family of radiating systems shows a radiation mechanism dependent on both angle and range thanks to the different frequency radiated by each array element: for this reason, it can simultaneously focus and steer its beam, thus providing a strategic capability for wireless power transfer applications. Despite the array architecture described in this paper is the standard one, it represents a cumbersome task from the circuit analysis point of view. The full-wave analysis combined with an effective exploitation of the Harmonic Balance technique allows, for the first time, the accurate estimation of the dynamic behavior of this promising radiating system.