Holographic Tensor Metasurface for Simultaneous Wireless Powers and Information Transmissions Using Polarization Diversity

A holographic tensor metasurface (HTM) is proposed from the energy perspective to achieve flexible regulations of polarization and energy distributions for simultaneous transmissions of power and information. A dual-polarization receiving metasurface with high isolation is also proposed to enable simultaneous receptions of power and information. Based on the two metasurfaces, a novel system for simultaneous wireless information and power transmissions (SWIPT) is established, which can transmit microwave powers and information signals by flexibly regulating the electromagnetic waves in different polarizations. The proposed HTM can generate non-diffraction Bessel beams of two polarizations to keep high-power transfer efficiency in an environment with obstacles. A rectifier circuit is designed with a wide dynamic range to integrate with the receiving metasurface to capture the strong powers and weak signals simultaneously. The effect of different modulations on the rectification efficiency of microwave-to-DC and the performance of the SWIPT system are analyzed. The SWIPT system is verified by experiments to realize simultaneous transmissions of information and powers by only using the metasurfaces, which is beneficial to integrate the wireless sensor networks, communication modules, and artificial intelligence algorithms to build up smart cities. The developed holographic tensor metasurface exhibits the capability to achieve power equalization between two orthogonal polarizations. A universal software radio peripheral is utilized to transmit both energy and information to the holographic tensor metasurface. Furthermore, the receiving metasurface efficiently captures and decodes the energy and information carried by each polarization individually, ultimately enabling synchronized energy and information transmission.image

Automated summary

This paper presents a holographic tensor metasurface (HTM) for flexible regulation of polarization and energy distributions, enabling simultaneous transmissions of power and information. By combining with a high isolation dual-polarization receiving metasurface, a novel system for simultaneous wireless information and power transmissions (SWIPT) is established. Experimental results verify that this system is capable of simultaneous transmission of information and power, which has potential applications in the development of smart cities.