公开(公告)号：US20190140482A1

公开(公告)日：2019-05-09

申请号：US15911264

申请日：2018-03-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Ick MOON ,  Sang-Won KIM ,  Seong-Min KIM ,  In Kui CHO ,  Je Hoon YUN ,  Dong Won JANG

IPC: H02J50/12 ,  H02J50/40 ,  H02J3/01

Abstract: Provided is a wireless power reception apparatus for wirelessly receiving power from a wireless power transmission apparatus, the wireless power reception apparatus including a reception coil configured to receive power by a harmonic with an n*f0 frequency that is generated through electromagnetic induction with the wireless power transmission apparatus; a matching circuit configured to transfer the harmonic with the n*f0 frequency to a harmonic generator; the harmonic generator configured to generate at least one harmonic with an m*n*f0 frequency by applying a multiplication factor m to the transferred harmonic with the n*f0 frequency; a filter configured to filter the harmonic with the m*n*f0 frequency; and a harmonic transmission coil configured to transmit the filtered harmonic with the m*n*f0 frequency to the wireless power transmission apparatus, and to attenuate the harmonic with the n*f0 frequency that is generated from the wireless power transmission apparatus.

公开(公告)号：US20170179754A1

公开(公告)日：2017-06-22

申请号：US15363818

申请日：2016-11-29

Applicant: Electronics and Telecommunications Research Institute

Inventor： In Kui CHO ,  Seong Min KIM ,  Jung Ick MOON ,  Duk Ju AHN ,  Je Hoon YUN ,  Hyung Do CHOI ,  Dong Won JANG

IPC: H02J7/02 ,  H02J50/12 ,  H02J7/04 ,  H02J50/40

CPC classification number: H02J7/025 ,  H02J7/0042 ,  H02J7/045 ,  H02J50/12 ,  H02J50/40 ,  H02J50/90

Abstract: Provided is a wireless charging apparatus for performing wireless charging of an electronic device including a receiving coil located in a three-dimensional (3D) wireless charging zone using a plurality of transmitting coils arranged in the 3D wireless charging zone and at least one power source configured to supply a current to the plurality of transmitting coils.

公开(公告)号：US20250046509A1

公开(公告)日：2025-02-06

申请号：US18918442

申请日：2024-10-17

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Ick MOON ,  In Kui CHO ,  Sang-Won KIM ,  Seong-Min KIM ,  Ho Jin LEE ,  Je Hoon YUN ,  Dong Won JANG

IPC: H01F27/28

Abstract: A low-loss spiral coil includes a conducting wire wound N turns of which a width of each of wires corresponding to each of sections of the conducting wire is determined by setting an entire width of the conducting wire to be a width of M sections of the conducting wire, and then determining the width of each of the wires such that a resistance of the spiral coil formed based on the width of the M sections is minimized.

公开(公告)号：US20230140065A1

公开(公告)日：2023-05-04

申请号：US17976077

申请日：2022-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Je Hoon YUN ,  Sang-Won KIM ,  Seong-Min KIM ,  Jung Ick MOON ,  In Kui CHO ,  Gwangzeen KO ,  Dong Won JANG

IPC: H02J50/00 ,  H02J50/12 ,  H01F27/28

Abstract: A wireless power transmission resonator using a conducting wire with a vertical rectangular cross-section is disclosed. The wireless power transmission resonator may include a first element including a first element upper part arranged in an upper end of a resonator and a first element lower part arranged in a lower end of the resonator, wherein the first element upper part and the first element lower part each may include a spiral layer having a spiral structure that is wound to face a wide surface of a conducting wire including a vertical rectangular cross-section and a second element arranged in a center of the resonator and between the first element upper part and the first element lower part and including a spiral layer having a spiral structure that is wound to face the wide surface of the conducting wire including the vertical rectangular cross-section.

公开(公告)号：US20220179017A1

公开(公告)日：2022-06-09

申请号：US17538288

申请日：2021-11-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Joon LEE ,  Jang Yeol KIM ,  Jae Woo LEE ,  In Kui CHO ,  Sang Won KIM ,  Seong Min KIM ,  Jung Ick MOON ,  Je Hoon YUN ,  Dong Won JANG

IPC: G01R33/26

Abstract: An atomic magnetometer, which operates in a communication system using a magnetic signal in a very low frequency (VLF) band, may comprise: a vapor cell comprising one or more alkaline metal atoms; a pump light source configured to provide circularly polarized pump beams to the vapor cell; an irradiation light source configured to provide linearly polarized irradiation beams to the vapor cell; a magnetic signal detecting unit configured to detect a magnetic signal by measuring a polarization rotation angle from the linearly polarized irradiation beam passing through the vapor cell; and a bias magnetic field control unit configured to control a bias magnetic field applied to the vapor cell.

公开(公告)号：US20220131417A1

公开(公告)日：2022-04-28

申请号：US17509277

申请日：2021-10-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Je Hoon YUN ,  Sang Won KIM ,  Seong Min KIM ,  Jung Ick MOON ,  Woo Jin BYUN ,  Dong Won JANG ,  In Kui CHO

IPC: H02J50/12 ,  H02J50/40 ,  H01F38/14

Abstract: A wireless power transmitting device includes: an upper coil including a first conical coil and a first spiral coil disposed beneath the first conical coil; a lower coil including a second spiral coil disposed to face the first spiral coil and a second conical coil disposed beneath the second spiral coil; a connecting stub configured to connect the upper coil and the lower coil to each other; and a power source configured to supply a power to the upper coil or the lower coil. The first spiral coil and the second spiral coil generate an electric field and a magnetic field in a resonance state to transfer at least some of the power from the power source to an external wireless power receiving device through the electric field and the magnetic field.

公开(公告)号：US20210109173A1

公开(公告)日：2021-04-15

申请号：US17071530

申请日：2020-10-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyunjoon LEE ,  In Kui CHO ,  Jang Yeol KIM ,  Jaewoo LEE ,  Ho Jin LEE ,  Sang-Won KIM ,  Seong-Min KIM ,  Jung Ick MOON ,  Woo Cheon PARK ,  Je Hoon YUN ,  Dong Won JANG

IPC: G01R33/26

Abstract: The atomic magnetometer includes a light source device configured to output a linearly polarized irradiation light and a circularly polarized pump light, a first vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a first transmitted light, a second vapor cell including an alkali metal atom, receiving the linearly polarized irradiation light, and outputting a second transmitted light, a magnetic field application device configured to apply a bias magnetic field in opposite directions to the first vapor cell and the second vapor cell, and a measuring device configured to obtain the magnetic field signal based on a differentiation of a first polarization rotation signal corresponding to a polarization state of the first transmitted light and a second polarization rotation signal corresponding to a polarization state of the second transmitted light.

公开(公告)号：US20190036379A1

公开(公告)日：2019-01-31

申请号：US15986429

申请日：2018-05-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seong-Min KIM ,  Sang-Won KIM ,  Jung Ick MOON ,  In Kui CHO ,  Je Hoon YUN ,  Dong Won JANG

IPC: H02J50/12

CPC classification number: H02J50/12

Abstract: Disclosed is a wireless power receiving apparatus capable of controlling an effective load resistance. The wireless power receiving apparatus may include a rectifier configured to generate a rectified voltage based on a magnetic field generated in a wireless power transmitting apparatus, and a controller configured to transmit, to the rectifier, a control signal for controlling a rectified phase of the rectifier to adjust an effective load resistance of the wireless power receiving apparatus.

公开(公告)号：US20170201126A1

公开(公告)日：2017-07-13

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: H02J50/12 ,  H02J50/80

CPC classification number: 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.