公开(公告)号：US10581277B2

公开(公告)日：2020-03-03

申请号：US15428283

申请日：2017-02-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Bong Jeon ,  Jung Ick Moon ,  Sang-Won Kim ,  Seong-Min Kim ,  In Kui Cho ,  Jong Hwa Kwon ,  Byung Chan Kim ,  Hyung Do Choi

IPC: H02J50/12 ,  H02J7/02 ,  H02J50/90

Abstract: Provided is an apparatus for reducing an electromagnetic wave in a wireless power transmitter using a reducing coil, the apparatus that may cancel external emission of a magnetic field formed at a transmission coil using the reducing coil based on induced electromotive force.

公开(公告)号：US11817977B2

公开(公告)日：2023-11-14

申请号：US17710625

申请日：2022-03-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung Chan Kim ,  Kang Hee Kim ,  Haeng Sook Ro ,  Gwang Moon Park ,  Soo Ho Sohn ,  Ki Cheol Tae

IPC: H04B3/46 ,  H04L27/00

CPC classification number: H04L27/0012 ,  H04L27/0006

Abstract: In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.

公开(公告)号：US10673278B2

公开(公告)日：2020-06-02

申请号：US15267622

申请日：2016-09-16

Applicant: Electronics and Telecommunications Research Institute ,  DONGYANG E&P INC.

Inventor： Jung Ick Moon ,  Seong Uk Baek ,  Byoung In Lee ,  Woo Chul Lee ,  Jong Seup Lee ,  Dong Woo Cheon ,  Sang Bong Jeon ,  Seong Min Kim ,  Duk Ju Ahn ,  In Kui Cho ,  Byung Chan Kim ,  Je Hoon Yun ,  Dong Won Jang ,  Hyung Do Choi

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J50/12 ,  H02J50/70 ,  H02J50/90 ,  H02J50/50

Abstract: Provided is a wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device including a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil, a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil, and a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver.

公开(公告)号：US10727701B2

公开(公告)日：2020-07-28

申请号：US16415117

申请日：2019-05-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Duk Ju Ahn ,  In Kui Cho ,  Seong Min Kim ,  Jung Ick Moon ,  Sang Bong Jeon ,  Byung Chan Kim ,  Je Hoon Yun ,  Dong Won Jang ,  Hyung Do Choi

IPC: H02J5/00 ,  H02J17/00 ,  H02J50/12 ,  H02J50/80

Abstract: Provided is a wireless power reception apparatus which receives a power from a wireless power transmission apparatus. A wireless power reception apparatus which receives a power from a wireless power transmission apparatus, the wireless power reception apparatus comprising a duty controller configured to control a duty cycle; a power converter configured to convert an effective load resistance according to the duty cycle; a reception resonator configured to receive a power from a transmission coil of the wireless power transmission apparatus, wherein the duty cycle and a current of the transmission coil is adjusted based on a load resistance of the wireless power reception apparatus.

公开(公告)号：US10298066B2

公开(公告)日：2019-05-21

申请号：US15240043

申请日：2016-08-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Duk Ju Ahn ,  In Kui Cho ,  Seong Min Kim ,  Jung Ick Moon ,  Sang Bong Jeon ,  Byung Chan Kim ,  Je Hoon Yun ,  Dong Won Jang ,  Hyung Do Choi

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J50/12 ,  H02J50/80

Abstract: The wireless power reception apparatus includes: a duty controller configured to calculate an amount of current of a transmission coil required for the wireless power transmission apparatus and control a duty cycle by using at least one of distance information between the wireless power transmission apparatus and the wireless power reception apparatus or load current information; a power converter configured to convert an effective load resistance according to the duty cycle; a wireless data transmitter configured to transmit a signal that requires a control of the calculated amount of current of the transmission coil to the wireless power transmission apparatus; and a reception resonator configured to receive a power according to the amount of current of the transmission coil controlled by the signal that requires a control of the amount of current of the transmission coil from the wireless power transmission apparatus.