Element-independent design technique for wide angle impedance matching material

This paper presents a design technique for a wide angle impedance matching network material which does not require the knowledge of the analytical form of the scan impedance of the radiating element. The design procedure is therefore applicable for any type of array element and it is based on a Floquet-mode expansion. The presented approach is applied to the design of a multilayer Wide Angle Impedance Matching (WAIM) material for a phased array of patch elements.