Convolution Operations on Coding Metasurface to Reach Flexible and Continuous Controls of Terahertz Beams.

ABSTRACT: The concept of coding metasurface makes a link between physically metamaterial particles and digital codes, and hence it is possible to perform digital signal processing on the coding metasurface to realize unusual physical phenomena. Here, this study presents to perform Fourier operations on coding metasurfaces and proposes a principle called as scattering-pattern shift using the convolution theorem, which allows steering of the scattering pattern to an arbitrarily predesigned direction. Owing to the constant reflection amplitude of coding particles, the required coding pattern can be simply achieved by the modulus of two coding matrices. This study demonstrates that the scattering patterns that are directly calculated from the coding pattern using the Fourier transform have excellent agr

SUBMITTER: Liu S 

PROVIDER: S-EPMC5096125 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature