⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种13.56MHz全集成1X/2X主动整流器，带有补偿偏置电流，用于感应供电设备。该整流器实现了高效率的无线功率传输，适用于植入式医疗设备等应用。
Wireless power transfer has a broad range of applications ranging from mobile phone chargers to biomedical implants. For cochlear implants [1] and retinal prostheses [2], having a miniaturized form factor and being battery-less are highly desirable. Such devices require real-time power transfer in the range of 10 to 100mW [3], and as human tissue specific absorption rate (SAR) increases with frequency, inductively-coupled power links that operate at 13.56MHz or lower in ISM bands are commonly used, as shown in Fig. 4.2.1. However, lower transmission frequency means larger matching and filtering capacitors that are bulky. In addition, the received AC input amplitude VAC,Peak would fluctuate due to changes in distance and orientation between the coupling coils. Hence, comparator-controlled power switches (active diodes) are used to replace diodes so that the rectifier could work at a lower VAC,Peak and still achieve a high voltage
Yan Lu, Xing Li, Wing-Hung Ki, Chi-Ying Tsui, C. Patrick Yue
HKUST, Hong Kong, China