Dynamically Tunable Electromagnetic Stealth Metasurface

In this paper, we present a dynamically tunable electromagnetic stealth metasurface with promising prospect in stealth of modern military radar, for the gradually improving of the complexity operational environment of modern military communication. The metasurface is composed of two layers: the absorber layer and the transmission layer. The absorber layer consists of a metal ring which is loaded with resistors; and the transmission layer is loaded with PIN diodes in the aperture place in the plate metal. The electromagnetic stealth metasurface is designed through combining the absorber layer and transmission layer together, which have the ability to dynamically tune the state of the transmission band. The simulation result from the Electromagnetic Simulation Software of CST shows that, when the PIN diode is the off state, the transmission has an insertion loss of 0.76 dB at the frequency of 11.34 GHz, and the absorption band is from 4 GHz to 11 GHz and from 13.5 GHz to 16 GHz. When the PIN diodes are ON state, the transmission band is switched to close. The proposed metasurface has the function of wide band absorption and dynamically tunable transmission band, promising prospects in stealth of modern military radar.