title: Highly efficient beam steering with a transparent metasurface.
abstract: We propose an ultra-thin planar metasurface with phase discontinuities for highly efficient beam steering. The effect benefits from the broadband transparency and flexible phase modulation of stacked metal/dielectric multi-layers that is perforated with coaxial annular apertures. Proof-of-principle experiments verify that an efficiency of 65% and a deflection angle of 18° at 10 GHz are achieved for the transmitted beam, which are also in good agreement with the finite-difference-method-in-time-domain (FDTD) simulations. The scheme shall be general for the design of beam-steering transmitters in all frequencies.
authors.affiliation: Tongji University, Shanghai 200092, China.
authors.forename: Zeyong
authors.initials: Z
authors.lastname: Wei
authors.forename: Yang
authors.initials: Y
authors.lastname: Cao
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Su
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Gong
authors.forename: Yang
authors.initials: Y
authors.lastname: Long
authors.forename: Hongqiang
authors.initials: H
authors.lastname: Li
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008420:Manufactured Materials; D012031:Refractometry / Q000295:instrumentation*