Abstract
Programmable metasurfaces allow dynamic and real‐time control of electromagnetic (EM) waves in subwavelength resolution, holding extraordinary potentials to establish meta‐systems. Achieving independent and real‐time controls of orthogonally‐polarized EM waves via the programmable metasurface is attractive for many applications, but remains considerably challenging. Here, a polarization‐controlled dual‐programmable metasurface (PDPM) with modular control circuits is proposed, which enables a dibit encoding capability in modifying the phase profiles of x‐ and y‐polarized waves individually. The constructed extended interface circuit is able to extend the number of control interfaces from a field programmable gate array by orders of magnitude and also possesses memory function, which enhance hugely the rewritability, scalability, reliability, and stability of PDPM. As a proof‐of‐concept, a wave‐based exclusive‐OR logic gate platform for spin control of circularly‐polarized waves, a fixed‐frequency wide‐angle dual‐beam scanning system, and a dual‐polarized shared‐aperture antenna are demonstrated using a single PDPM. The proposed PDPM opens up avenues for realizing more advanced and integrated multifunctional devices and systems that have two independent polarization‐controlled signal channels, which may find many applications in future‐oriented intelligent communication, imaging, and computing technologies.
Highlights
The proposed polarization-controlled dual-programmable metasurface (PDPM) opens up avenues for realizing more advanced and integrated multifunctional devices various functions, a field programmable gate array (FPGA) is introduced into dynamic metasurfaces to further construct programmable metasurfaces.[21]
Metasurfaces, 2D equivalents of metamaterials, have demon- programmable metasurfaces designs, the phase profiles of strated their superior abilities to realize full control of electromag- orthogonally-polarized EM waves are coupled to each other or netic (EM) waves at the deep-subwavelength thickness interface. the programmability can only be achieved under a special polarization
We propose the concept and realize the prototype of a polarization-controlled dual-programmable metasurface (PDPM) for independent manipulations of orthogonallypolarized microwaves in real time
Summary
Which cannot be controlled programmatically in real time, hampering their applications in high-speed scanning systems and communications. Under the normal incidence of x- and y-polarized waves, the measured radiation patterns of the dual-beam scanning system at 5.85 GHz with the six coding sequences are presented in Figures 4d,e, respectively. Since the proposed PDPM is able to realize the dual-beam scanning in the x–z and y–z planes individually under the y- and x-polarized incidences, it can further work as a dual-polarized shared-aperture antenna system with dual-beam scanning in the upper half space In this case, the same PDPM operates simultaneously under the x- and y-polarized waves, and can provide two independent information channels at the single frequency. Www.advancedscience.com dual-programmable metasurface sets up a bridge between the subwavelength-scale light–matter interaction and the information processing, and provides an alternative route to realize large-scale dynamic meta-devices and software-defined rewritable systems, which is fundamentally important to new computing and communications paradigms.[40,41]
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