Cha & Reiter, LLC.
Power transmission apparatus and power transmission method
A power transmitting unit is provided. The power transmitting unit includes a signal generator configured to generate a signal of a first frequency band for wireless charging, a power generation circuit configured to generate a modulation signal for modulating the signal of the first frequency band generated by the signal generator, and amplify a transmit power of the signal of the first frequency band based on voltage supplied from the outside of the power transmitting unit, a power transmission circuit configured to transmit the amplified transmit power to a power receiving unit via a first antenna, a second antenna configured to receive information about a charging state from the power receiving unit through a second frequency band, and a control circuit configured to control a duty and frequency of the modulation signal based on the charging state.
Samsung Electronics Co., Ltd.
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Kyung Min Ju Hyang Hyung Koo Kyoung Won Keum Su Yong Sang Yu Su Han Seok Se Ho Dong Zo
Park Lee Chung Kim Song Yun Kim Park Park Kim