Double-Sided Metasurface Array for a Dual-Band and Polarization-Independent Microwave-Energy-Harvesting System.

Area of Science:

• Electrical Engineering
• Materials Science

Background:

• Metasurfaces offer unique electromagnetic properties for advanced applications.
• Dual-band and polarization-independent energy harvesting is crucial for wireless power transfer.

Purpose of the Study:

• To design and validate a novel double-sided metasurface for dual-band, polarization-independent microwave energy harvesting.
• To explore a new unit cell design utilizing top and bottom layers for enhanced frequency response.

Main Methods:

• Numerical simulations were performed on a single unit cell, a 2x2 supercell, and an 8x8 metasurface array.
• The metasurface design incorporates double loops and dipole arms on opposite sides of a substrate.

Main Results:

• The proposed metasurface demonstrates dual-band operation at 1.8 GHz and 6.5 GHz.
• High energy collection efficiencies of 98% and 95% were achieved at the respective bands.
• The design is polarization-independent, enhancing its practical applicability.

Conclusions:

• The developed double-sided metasurface is a promising solution for efficient microwave energy harvesting.
• The unique design approach enables dual-band and polarization-independent performance.
• This work contributes to the advancement of wireless power transfer technologies.