Using Impedance Sheets in Conjunction with Characteristic Mode Analysis as a Tool for Reflecting Intelligent Surface Design

The computational efficiency advantage of an impedance sheet replacing the actual structure by an equivalent parameter in simulation is combined with the intuitivity of the Characteristic Modes Analysis. The synthesis of optimized unit cells with discrete meta-atoms is presented. An example reflecting intelligent surface design is shown. It is found that the impedance sheet optimization generalizes the unit cell optimization while decreasing computational costs.