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Phase and amplitude simultaneously coding metasurface with multi-frequency and multifunctional electromagnetic modulations
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Phase and amplitude simultaneously coding metasurface with multi-frequency and multifunctional electromagnetic modulations
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Journal Article
Phase and amplitude simultaneously coding metasurface with multi-frequency and multifunctional electromagnetic modulations
2024
Overview
The integration of multiple functionalities into a single, planar, ultra-compact metasurface has presented significant opportunities for enhancing capacity and performance within compact 5G/6G communication systems. Recent advances in multifunctional metasurfaces have unveiled comprehensive wavefront manipulations utilizing phase, polarization transmission/reflection, and coding apertures. Despite these developments, there remains a critical need for multifunctional metasurfaces with expanded channel capabilities, including multiple operational frequencies, minimal crosstalk, and high-efficiency computable array factors. This study introduces a multifunctional metasurface that integrates phase- and amplitude simultaneous coding meta-atoms at dual frequencies. By altering the polarization of electromagnetic (EM) waves, it is possible to reshape the wave-fronts of reflected waves at these frequencies. The coding metasurface proficiently manipulates both
x
and
y
linearly polarized waves through phase and amplitude coding at dual frequencies, thereby enabling distinct functionalities such as anomalous reflection, reflection imaging, and vortex wave beam generation. Both theoretical analysis and full-wave simulation confirm the anticipated functionalities of the designed devices, paving the way for advancements in integrated communication systems with diverse functionalities.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
