论文标题
使用多层拆分谐振器MetaSurfaces自由控制远场散射角Terahertz波
Free Control of Far-Field Scattering Angle of Transmission Terahertz Wave using Multilayer Split-Ring Resonators Metasurfaces
论文作者
论文摘要
为了提高Pancharatnam-Berry（PB）相位额叶的传输效率，提出了多层拆分谐振器来开发编码序列。根据广义的SNELL定律，PB相编码元信息的挠度取决于元表周期的大小。因此，不可能设计一个无限的跨面单位。结果，无法获得连续的透射散射角。在数字信号处理中，本研究介绍了编码跨表序列以自由控制传输散射角的傅立叶卷积原理。然后进行两个不同编码序列之间的加法和减法操作，以实现散射角的连续变化。此外，我们确定可以将傅立叶卷积原理应用于编码的Checkerboard编码的Metasurfaces。
To enhance transmission efficiency of Pancharatnam-Berry (PB) phase metasurfaces, multilayer split-ring resonators were proposed to develop encoding sequences. As per the generalized Snell law, the deflection angle of the PB phase encoding metasurfaces depends on the metasurface period size. Therefore, it is impossible to design an infinitesimal metasurface unit.Consequently, the continuous transmission scattering angle cannot be obtained. In digital signal processing, this study introduces the Fourier convolution principle on encoding metasurface sequences to freely control the transmitted scattering angles. Both addition and subtraction operations between two different encoding sequences were then performed to achieve the continuous variation of the scattering angle. Furthermore, we established that the Fourier convolution principle can be applied to the checkerboard coded metasurfaces.
