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3-D Manipulation of Dual-Helical Electromagnetic Wavefronts With a Noninterleaved Metasurface.

Authors :
Li, Zhenfei
Zhang, Dajun
Liu, Ji
Zhang, Jin
Shao, Linda
Wang, Xiong
Jin, Ronghong
Zhu, Weiren
Source :
IEEE Transactions on Antennas & Propagation; Jan2022, Vol. 70 Issue 1, p378-388, 11p
Publication Year :
2022

Abstract

While electromagnetic (EM) metasurfaces have been extensively studied for wavefront manipulations, the real 3-D manipulation of wavefront remains challenging. In this article, an advanced strategy of noninterleaved multitasked metaplexer for 3-D manipulation of dual-helical EM wavefronts is reported. We first develop a general method to derive the metasurface phase distribution required to form the desired 3-D electric field patterns. Then, the spin-decoupled meta-atoms are designed to achieve this goal and further increase the degrees of freedom in EM manipulation. As a proof of concept, cascaded multiplane digital images in the propagation direction are employed as the 3-D wavefronts, which are encoded into the spin-decoupled meta-atoms array, making the outputting circularly polarized waves carrying different image information at different planes. Both the simulations and experiments verify the desirable 3-D wavefront manipulation capacities of our strategy for dual-helical states. Besides, this scheme can be further extended to achieve arbitrary energy allocation in 3-D space for dual-helical EM waves. Our strategy paves an alternative route for applications such as multiple-input multiple-output (MIMO) communications, multitarget radar detection, information storage, as well as 3-D microwave imaging. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0018926X
Volume :
70
Issue :
1
Database :
Complementary Index
Journal :
IEEE Transactions on Antennas & Propagation
Publication Type :
Academic Journal
Accession number :
154764008
Full Text :
https://doi.org/10.1109/TAP.2021.3090511