Manipulations of multi-frequency waves and signals via multi-partition asynchronous space-time-coding digital metasurface

Manipulations of multiple carrier frequencies are especially important in a variety of fields like radar detection and wireless communications. In conventional radio-frequency architecture, the multi-frequency control is implemented by microwave circuits, which are hard to integrate with antenna ape...

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Bibliographic Details
Published in:Nature communications 2023-09, Vol.14 (1), p.5377-5377, Article 5377
Main Authors: Wang, Si Ran, Dai, Jun Yan, Zhou, Qun Yan, Ke, Jun Chen, Cheng, Qiang, Cui, Tie Jun
Format: Article
Language:English
Subjects:
639/166/987
639/766
Carrier frequencies
Coding
Entanglement
Frequency control
Frequency division multiplexing
Harmonics
Humanities and Social Sciences
Metasurfaces
Microwave circuits
multidisciplinary
Power consumption
Power efficiency
Radar detection
Science
Science (multidisciplinary)
Spacetime
System effectiveness
Wireless communications
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Summary:Manipulations of multiple carrier frequencies are especially important in a variety of fields like radar detection and wireless communications. In conventional radio-frequency architecture, the multi-frequency control is implemented by microwave circuits, which are hard to integrate with antenna apertures, thus bringing the problems of expensive system and high power consumption. Previous studies demonstrate the possibility to jointly control the multiple harmonics using space-time-coding digital metasurface, but suffer from the drawback of inherent harmonic entanglement. To overcome the difficulties, we propose a multi-partition asynchronous space-time-coding digital metasurface (ASTCM) to generate and manipulate multiple frequencies with more flexibility. We further establish an ASTCM-based transmitter to realize wireless communications with frequency-division multiplexing, where the metasurface is responsible for carrier-wave generations and signal modulations. The direct multi-frequency controls with ASTCM provides a new avenue to simplify the traditional wireless systems with reduced costs and low power consumption. The authors present a multi-partition asynchronous space-time-coding digital metasurface (ASTCM) to control multifrequency waves; they demonstrate its capabilities by sending eight pictures over distinct frequencies using this wireless transmitter. The proposed work shows potential in enhancing microwave systems with improved power efficiency and cost-effectiveness.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-023-41031-0