Yonsei University

Yongshik Lee

Jaemin Lee

Tae Jun Lim

Taejun Lim

Taeck Keun Oh

The present disclosure relates to a wireless power transmitter device, a wireless power receiver device, and a system for transferring power wirelessly. A wireless power transmitter device according to an embodiment of the present disclosure can include: a driving coil configured to transmit power wirelessly; a magnetic coupler mutually inductively coupled with the driving coil; and a resonance frequency adjuster part configured to adjust the resonance frequency of the magnetic coupler, where the magnetic coupler can include a plurality of coils arranged in a region opposite one side of the driving coil.

Wireless power transmitter device, wireless power receiver device, system for transferring power wirelessly

A wireless power transmission apparatus for multiple simultaneous charging is disclosed. The disclosed apparatus, which may be a wireless power transmission apparatus configured to provide charging power simultaneously to a multiple number of wireless power reception apparatuses, may include: a driving coil configured to transmit wireless power; a magnetic coupler inductively coupled with the driving coil; and a resonance frequency adjustment part configured to adjust a resonance frequency of the magnetic coupler, where the magnetic coupler includes a multiple number of coils, and a variable capacitor is joined to each of the multiple coils. The disclosed apparatus can improve power transfer efficiency while providing power simultaneously to a multiple number of wireless power reception apparatuses.

Apparatus for transmitting wireless power for multiple simultaneous charging and apparatus for receiving wireless power

Provided is a polarization antenna. The polarization antenna includes a dielectric substrate; a radiating element formed on the dielectric substrate to be symmetric in up and down and left and right directions; and a balanced feed element including multiple pairs of feed ports which are formed on the dielectric substrate and have a symmetrical structure, applying balanced signals having different phases from each other to the paired feed ports.

Growing community of inventors

Seoul, South Korea

Yongshik Lee