An Out-of-Phase Wireless Power Transfer System for Implantable Medical Devices to Reduce Human Exposure to Electromagnetic Field and Increase Power Transfer Efficiency. - Jangyong Ahn; Seongho Woo; Haerim Kim; Kyunghwan Song; Sungryul Huh; Seon-Eui Hong; Jedok Kim; Hyung-Do Choi; Seungyoung Ahn (IEEE Trans. Biomed. Circuits Syst., 2022)