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Updated: Jun 4, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
A compact harmonic-suppressed Metasurface rectifier for efficient RF-to-DC power conversion in wireless power
Dunyu Chang1, Chenchen Wang1, Jinling Zhang1
1School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Abstract:
This study presents a compact harmonic-suppressed metasurface rectifier (HS-MSR) designed for efficient RF-to-DC power conversion in wireless power transfer (WPT) systems. By introducing four symmetrical T-slot resonant branches into the metasurface unit cell, high-order harmonic components generated by the nonlinear rectifying diode are effectively suppressed, improving conversion efficiency without additional filters. The metasurface employs a single-layer, fully integrated structure that allows direct impedance matching between the rectifier and the receiving surface, reducing circuit complexity and insertion loss. Both full-wave and co-simulation results verify an RF-to-DC efficiency of 75.6% under arbitrary polarization and wide incidence angles (0°-60°). Experimental validation with 2 × 2 and 4 × 4 prototypes further confirm the scalability and robustness of the proposed design. The HS-MSR provides a promising platform for system-level RF energy harvesting and high-efficiency WPT applications in compact electronic and internet of things (IoT) devices.
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