A microstrip loop resonator loaded with a lumped capacitor is proposed for short-range wireless power transmission applications. The overall physical dimensions of the proposed loop resonator configuration are as small as 3 cm by 3 cm. Power transmission efficiency of greater than 80％ is achieved with a power transmission distance smaller than 5 mm via the strong coupling between two loop resonators around 1 GHz, as demonstrated by simulations and measurements. Experimental results also show that the power transmission performance is insensitive to various geometrical misalignments. The numerical and experimental results of this paper reveal a bandwidth of more than 50 MHz within which the power transmission efficiency is above 80％. As a result, the proposed microstrip loop resonator has the potential to accomplish efficient wireless power transmission and high-speed (higher than 10 Mbit/s) wireless communication simultaneously.

WANG Xin;LI Wenbo;LU Mingyu

Chongqing University,Chongqing 400044,China;Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;West Virginia University Institute of Technology,Beckley,West Vir?ginia 25801,USA

中兴通讯技术（英文版）

[1]WANG Xin;LI Wenbo;LU Mingyu-.A Radio-Frequency Loop Resonator for Short-Range Wireless Power Transmission)[J].中兴通讯技术（英文版）,2022(02):43-47

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