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JSSC 2024第12期RF & Wireless180nmEnergy Harvesting

A Coupling-Adaptive Wireless Power Transfer System With V oltage-Current-Mode Re

一种13.56MHz无线能量传输系统，适用于生物医学植入设备，具有耦合适应性和高效率。
1.8V, 13.56MHz, 72.3% E2E效率, 7.2cm传输距离
无线能量传输生物医学植入设备耦合适应性高效率数字PWM
▸混合电压/电流模式接收器（V/CM RX）
▸基于数字PWM的全局功率调节技术
▸全集成电压传感负载键控（LSK）解调技术
Abstract
This article presents a 13.56-MHz wireless power transfer (WPT) system with coupling variation robustness and high efficiency for powering biomedical implantable devices (IMDs). To sustain reliable power transfer against inductive- link fluctuation, a hybrid voltage-/current-mode (V/CM) receiver (RX) is proposed to provide CM recovery when the coupling becomes weak for VM operation. To optimize the end-to-end (E2E) efficiency, a digital pulsewidth modulation (PWM)-based global power regulation t