Recently, the research team from the School of Electronic Science and Engineering at Nanjing University, led by Professor Shi Yi and Associate Professor Qiu Hao, has achieved a significant breakthrough in the realm of wireless power transmission technology. Their related research findings were published online on April 16 in the IEEE Journal of Solid-State Circuits, a premier journal in the field of integrated circuits. The paper, titled "A 6.78-MHz Single-Stage Regulating Rectifier with Dual Outputs Simultaneously Charged in a Half Cycle Achieving 92.2% Efficiency and 131 mW Output Power," addresses the power supply requirements for various types of sensors.

The study introduces two key technologies: Firstly, the multi-output simultaneous power supply technology, which enables parallel power delivery through phase differences, thereby significantly enhancing efficiency. Secondly, the adaptive charge distribution technology, which dynamically adjusts the charge distribution ratio to prevent voltage fluctuations. These technologies were verified through fabrication using a 0.18μm CMOS process. Under extreme conditions involving a 15-fold load mutation (a sudden change), the output voltage fluctuation remained below 1.5%, with a peak efficiency of 92.2%, setting international benchmarks for performance.

This accomplishment establishes a technological foundation for wireless power supply applications in diverse scenarios, including healthcare, industrial safety, and smart living environments.