公开(公告)号：US20240356380A1

公开(公告)日：2024-10-24

申请号：US18592509

申请日：2024-02-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang-Won KIM ,  Gwangzeen KO ,  Seong-Min KIM ,  Kyeseok YOON ,  In Kui CHO

IPC: H02J50/40 ,  H02J50/12 ,  H02J50/70

CPC classification number: H02J50/402 ,  H02J50/12 ,  H02J50/70

Abstract: A wireless charging system for attenuating electromagnetic waves is provided. The wireless charging system includes a transmitter including a clock generator configured to generate clock signals having reverse phases from each other, inverters configured to output inverter voltage/current signals having a same magnitude and reverse phases from each other using the clock signals generated by the clock generator, matching portions respectively connected to the inverters and configured to output transmission coil voltage/current signals having a same magnitude and reverse phases from each other using the inverter voltage/current signals, and transmission coils respectively connected to the matching portions and configured to generate magnetic fields towards a reception coil using the transmission coil voltage/current signals.