Active Controllable Single Side Double S-shaped Metamaterial

摘要

In this paper, a 1D active controllable metamaterial (as shown in Fig. 1) is experimentally realized by adding varactor diodes to the single side double S-shaped Left-handed material. When the external bias voltage of the varactor is changed, the results of the power transmission experiment conducted on the metamaterial sample in Fig. 2 demonstrate that the frequency range of the passbands of the sample becomes tunable and the phases of the experimental S21 shown in Fig. 3 shifts, which indicates the effective refractive index at a fixed frequency within the passbands of the material is controllable. Such tunable structure gives feasibility to realize active radome in the future.