Tunable Broadband Superconducting Cloaking

The broad frequency-tuning invisibility has been suggested and theoretically investigated with a single shell of superconductor (YBa
₂
Cu
₃
O
₇
). The analytical solution is deduced based on the scattering cancellation (SC) cloaking technique and the electromagnetic plane wave numerical simulation is carried out by the finite element method (FEM). The calculated and simulated results have confirmed that this superconducting cloak can reduce the total scattering cross section (SCS) of 90% in a broad frequency band of nearly 80 THz, whose cloaking frequency (CF) can be modulated by the applied temperature. It can offer a feasible route to design a broad frequency-tuning cloak with only a single layer of superconductor.