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High-performance cost efficient simultaneous wireless information and power transfers deploying jointly modulated
Xin Wang1, Jia Qi Han1, Guan Xuan Li1
1Key Laboratory of High-Speed Circuit Design and EMC of Ministry of Education, School of Electronic Engineering, Xidian University, Xi'an, 710071, China.
Nature Communications
|September 26, 2023
Summary
This study introduces an amplifying programmable metasurface (APM) to enhance simultaneous wireless information and power transfer (SWIPT). The APM improves power transmission and stability, enabling efficient data and energy transfer for future wireless systems.
Area of Science:
- Electromagnetics
- Wireless Communication
- Materials Science
Background:
- Programmable metasurfaces offer advanced electromagnetic wave manipulation for simultaneous wireless information and power transfer (SWIPT).
- Existing systems face limitations in power transmission distance, phase stability with high-power waves, and waveform efficiency, impacting data and energy transfer.
- Waveform limitations reduce average scattered power and rectifier efficiency, hindering SWIPT performance.
Purpose of the Study:
- To address challenges in SWIPT, including limited power transmission distance and unstable phase manipulation.
- To improve average scattered power and rectifier conversion efficiency for enhanced data and energy transfer.
- To demonstrate a novel system for efficient and simultaneous wireless information and power transfer.
Main Methods:
- Development of an amplifying programmable metasurface (APM).
- Implementation of a joint modulation method to optimize SWIPT performance.
- Experimental validation of the APM-based SWIPT system.
Main Results:
- The APM effectively mitigates the peak-to-average power ratio, enhancing maximum power transmission.
- Improved phase response stability under high-power scattered waves was achieved.
- Significant enhancements in average output power and rectifier conversion efficiency were demonstrated.
- Successful experimental validation showed simultaneous LED array powering and movie video transmission.
Conclusions:
- The developed APM and joint modulation method overcome key limitations in SWIPT systems.
- This innovative SWIPT system demonstrates practical feasibility for simultaneous data and power delivery.
- The technology shows significant potential for future applications in 6G wireless communications, IoT, implanted devices, and cognitive radio networks.
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