Multi-functional anisotropic metasurface using mechanical shape memory alloy spring

초록

In this paper we propose a multi-functional anisotropic metasurface (MAM) that has switchable radar cross section (RCS) functions and transmission enhancement for two opposite electromagnetic (EM) wave propagation direction. To avoid suffering from high-cost, and complexity design, MAM composes of two sub-metasurfaces motional and stational metasurface. By using mechanical transformation of shape memory alloy springs to transform the motional metasurface, MAM achieved the RCS function and switchable between absorption and reflection of 96.5% and 81.3% at 10.5 GHz. In additional to RCS functions, MAM is also designed with anisotropic pattern that can enhancing the transmission ratio of 11.02 dB in opposite directions of EM wave at 5.9 GHz © 2022 IEEE.

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