Time-Modulated Transmissive Programmable Metasurface for Low Sidelobe Beam Scanning.

ABSTRACT: Programmable metasurfaces have great potential for the implementation of low-complexity and low-cost phased arrays. Due to the difficulty of multiple-bit phase control, conventional programmable metasurfaces suffer a relatively high sidelobe level (SLL). In this manuscript, a time modulation strategy is introduced in the 1-bit transmissive programmable metasurface for reducing the SLLs of the generated patterns. After the periodic time modulation, harmonics are generated in each reconfigurable unit and the phase of the first-order harmonic can be dynamically controlled by applying different modulation sequences onto the corresponding unit. Through the high-speed modulation of the real-time periodic coding sequences on the metasurface by the programmable bias circuit, the equivalent phase s

SUBMITTER: Bai X 

PROVIDER: S-EPMC9297726 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature