Abstract
In this paper, a 0.1λ0-thick 1-bit coding metasurface is proposed to achieve a polarization-insensitive hologram under oblique incidence, utilizing compact ground-backed patch unit cells. Fourier convolution theory in a digital signal processing system is added to the hologram calculation of the improved weighted Gerchberg–Saxton (GSW) algorithm to achieve control of the scattered pattern in the microwave region. As a proof of concept, a prototype operating at 15 GHz is designed to verify the validity of our proposed approach. The measured performances show good imaging quality under different incident polarizations, providing potential applications in imaging processing and information storage.
Funder
National Natural Science Foundation of China
Open project of State Key Laboratory of Millimeter Waves
Subject
Radiology Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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