A fast and efficient method for design of circuit analog absorbers consisting of resistive square loop arrays

This paper proposes new precise equivalent circuit models (ECMs) for circuit analog absorbers consisting of resistors-loaded square loop arrays. Furthermore, a genetic algorithm (GA) is employed to optimize the geometrical parameters and the corresponding impedance properties to achieve different design requirements. For demonstration, two absorbers consisting of single and double square loop arrays are designed by using the combined methods of ECM and generic algorithm. The agreement between the simulated and measured reflection coefficients indicates the validity of the presented method.