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：US20190393710A1

公开(公告)日：2019-12-26

申请号：US15736250

申请日：2017-09-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Won KIM ,  Seong Min KIM ,  Jung Ick MOON ,  In Kui CHO

IPC: H02J7/02 ,  H01F38/14 ,  H02J50/12

Abstract: Disclosed is a wireless charging method and apparatus in a two-dimensional (2D) circular array structure that may form charging areas uniform in energy density. The wireless charging method includes receiving a current by a plurality of transmitting coils, and generating a three-dimensional (3D) wireless charging area that is available for wireless charging in a 3D space using a rotating magnetic field and a vertical magnetic field by the transmitting coils that are arranged in a circular form on a 2D plane.

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.

公开(公告)号：US20150311728A1

公开(公告)日：2015-10-29

申请号：US14696562

申请日：2015-04-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Je Hoon YUN ,  Seong Min KIM ,  Jung Ick MOON ,  In Kui CHO

IPC: H02J5/00 ,  H03F3/19

CPC classification number: H02J5/005 ,  H01F38/14 ,  H02J7/025 ,  H02J50/10 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/80 ,  H02J50/90

Abstract: Provided are wireless power transmitting method and apparatus using dual-loop in-phase feeding. The wireless power transmitting apparatus includes a generator configured to generate a Radio Frequency (RF) signal, an amplifier configured to amplify the generated RF signal, a matching circuit configured to be connected to the amplifier to perform impedance matching, a first resonator configured to comprise a first feeding loop connected to the matching circuit and transmit wireless power using a signal provided through the first feeding loop, and a second resonator configured to comprise a second feeding loop connected to the matching circuit and transmit wireless power using a signal provided through the second feeding loop, wherein the first and second feeding loops are formed in a manner that allows magnetic fields respectively generated by the first and second resonators to be excited in the same direction and in phase.

Abstract translation: 提供了使用双回路同相馈送的无线电力传输方法和装置。 无线电力发送装置包括：发生器，被配置为产生射频（RF）信号;放大器，被配置为放大所产生的RF信号;匹配电路，被配置为连接到所述放大器以执行阻抗匹配;第一谐振器，被配置为包括 连接到所述匹配电路并使用通过所述第一馈送环路提供的信号来发射无线电力的第一馈电环路，以及第二谐振器，其被配置为包括连接到所述匹配电路的第二馈电环路，并且使用通过所述第二馈送环路提供的信号来发射无线电力 其中第一和第二馈电回路以允许由第一和第二谐振器分别产生的磁场在相同方向和相位上被激励的方式形成。

公开(公告)号：US20150108850A1

公开(公告)日：2015-04-23

申请号：US14483382

申请日：2014-09-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： In Kui CHO ,  Seong Min KIM ,  Jung Ick MOON ,  Je Hoon YUN

IPC: H02J17/00

CPC classification number: H02J50/12 ,  H02J17/00 ,  H02J50/50 ,  H02J50/90

Abstract: Provided is a wireless power transmission method and apparatus for improving spectrum efficiency and space efficiency based on impedance matching and relay resonance, the method including detecting an input impedance at a resonant frequency, matching a transmitting port impedance to a real number value of the detected input impedance, and transmitting power to a receiving resonator smaller than a transmitting resonator using the relay resonator.

Abstract translation: 提供了一种用于基于阻抗匹配和中继谐振来提高频谱效率和空间效率的无线电力传输方法和装置，该方法包括：检测谐振频率的输入阻抗，将发送端口阻抗与检测输入的实数值相匹配 阻抗，并且使用该继电器谐振器向接收谐振器发射功率小于发射谐振器。

公开(公告)号：US20250141271A1

公开(公告)日：2025-05-01

申请号：US18922921

申请日：2024-10-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kye Seok YOON ,  Gwang Zeen KO ,  Sang Won KIM ,  Seong Min KIM ,  In Kui CHO

IPC: H02J50/12 ,  H02M1/00 ,  H02M7/48 ,  H02M7/5381 ,  H02M7/5387

Abstract: A method and device for controlling a resonant inductor for implementing ZVS in a push-pull parallel resonant inverter is closed. The present disclosure provides A device comprising: a converter including a full-bridge circuit in which a first switch and a second switch form a first leg and a third switch and a fourth switch form a second leg and configured to convert a DC into an AC by turning on or off the switches; a resonant inductor circuit including a resonant inductor and a resonant switch connected in series and connected between two output nodes of the converter; a transmission coil connected in parallel with the resonant inductor circuit; and a controller configured to convert the DC into the AC by providing a switching timing for turning on or off the switches and control a switching timing of the resonant switch based on switching timings of the switches.

公开(公告)号：US20240322601A1

公开(公告)日：2024-09-26

申请号：US18611412

申请日：2024-03-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwangzeen KO ,  Sang-Won KIM ,  Seong-Min KIM ,  Jung Ick MOON ,  In Kui CHO

IPC: H02J50/12 ,  H02J50/40

CPC classification number: H02J50/12 ,  H02J50/40

Abstract: A wireless power transmitter that changes an operation frequency and an operation method of the same are provided. The operation method includes controlling the wireless power transmitter to operate at a first operation frequency included in an operation frequency set, changing an operation frequency of the wireless power transmitter from the first operation frequency to a second operation frequency that is different from an operation frequency of a second wireless power transmitter that is adjacent to the wireless power transmitter for every channel duration, and controlling the wireless power transmitter to operate at the second operation frequency.

公开(公告)号：US20240120658A1

公开(公告)日：2024-04-11

申请号：US18377009

申请日：2023-10-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： In Kui CHO ,  Jang Yeol KIM ,  Jung Hoon OH ,  Hyun Joon LEE

IPC: H01Q15/00 ,  H01Q7/00

CPC classification number: H01Q15/0013 ,  H01Q7/00 ,  H01Q15/006

Abstract: An exemplary embodiment provides a signal receiver device capable of detecting a radio communication signal with a high signal-to-noise ratio while internally canceling an environmental noise. A signal receiver device according to an exemplary embodiment includes a first signal detection element; and a second signal detection element electrically connected to the first signal detection element and provided with a blocking member for attenuating a communication signal among received RF signals. The signal receiver device is configured to output a difference between a first detection signal detected by the first signal detection element and a second detection signal detected by the second signal detection element as a detected receive signal.

公开(公告)号：US20230387722A1

公开(公告)日：2023-11-30

申请号：US18095697

申请日：2023-01-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang-Won KIM ,  Gwangzeen KO ,  Seong-Min KIM ,  Jung Ick MOON ,  Je Hoon YUN ,  In Kui CHO ,  Saidul Alam Chowdhury ,  Shahid Ali Khan ,  Duk Ju AHN

IPC: H02J50/12

CPC classification number: H02J50/12

Abstract: Provided is a wireless power reception apparatus. The wireless power reception apparatus includes a resonant circuit including a first path and a second path, the first path including a first capacitor and a first gate connected in series, and the second path being connected in parallel with the first path and including a second capacitor and a second gate connected in series and a reception coil connected to the resonant circuit, configured to wirelessly receive power based on a capacitance of the resonant circuit, and to generate power according to the wirelessly received power, wherein the resonant circuit is configured to determine a gate driving signal to operate the first gate and the second gate and wherein the capacitance of the resonant circuit is determined according to the gate driving signal.