Design of Energy Selective Surface Guided by Theory of Characteristic Modes

A characteristic mode (CM) guided design of high-performance energy selective surface (ESS) is presented in this paper. Due to the nonlinear nature of loading diodes, the ESS can provide a passband for the low-intensity radiation field (LIRF) and a stopband for the high-intensity radiation field (HIRF). The design of the ESS is guided by the theory of characteristic modes (TCM), investigated by analyzing an equivalent circuit model, and then verified using field-circuit cosimulation. The results confirm that the transmitted power decreases remarkably at input power levels above 15 dBm. Such a property offers great potential as a protective screen for electronic devices from HIRF.