A design methodology for finite phased arrays and repetitive structures

This paper presents a design methodology that utilizes both infinite periodic cell methods and domain decomposition (DD), but more importantly it introduces a new intermediate stage that requires the analysis of few infinite x finite structures first. This is not a new idea, yet its practical implementation has not been successful because solving infinite x finite structures with conventional methods remains computationally expensive. The present approach combines ideas from DD and infinite periodic cell approaches in order to exploit repetitions within the infinite x finite cell. The combination significantly reduces the computational overhead, making the method suitable for optimization purposes.