Korea Electronics Technology Institute

Yongseong Kim

Yongseok Lim

Yongju Park

Kyeunghak Seo

Jinwoong Cho

Hyunseok Lee

Taigil Kwon

A power transmitting unit (PTU) for wireless power transmission (WPT) includes a communication transceiver and a power controller. The communication transceiver connects a communication link with at least one power receiving unit (PRU) through legacy communication and exchanges parameters necessary for the WPT through the connected communication link. The power controller is configured to transmit, to the PRU, a PTU beacon containing information about a dedicated power slot (DPS) allocated to the PRU in a super frame including a plurality of DPSs, to receive a PRU beacon from the PRU, to extract a phase difference between a plurality of antennas by analyzing a continuous wave (CW) of the PRU beacon, and to transmit power to the PRU in the allocated DPS in consideration of the phase difference.

Apparatus and method for RF beamforming wireless power transmission based on TDD communication

A pseudo-orthogonal code generator is provided. The pseudo-orthogonal code generator simplifies overall configuration and provides a more efficient operating speed by implementing a pseudo-orthogonal code generator using combined circuits instead of using a read only memory (ROM) circuit. The pseudo-orthogonal code generator reduces its overall size by reducing gate area.

Pseudo-orthogonal code generator

Growing community of inventors

Goyang-si, South Korea

Yongseong Kim