公开(公告)号：US11750246B2

公开(公告)日：2023-09-05

申请号：US17553466

申请日：2021-12-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Korea Advanced Institute of Science and Technology

Inventor： Jang Yeol Kim ,  Jaewoo Lee ,  Hyunjoon Lee ,  In Kui Cho ,  Sang-Won Kim ,  Seong-Min Kim ,  Jung Ick Moon ,  Je Hoon Yun ,  Dong Won Jang ,  Seunghun Ryu ,  Seungyoung Ahn

IPC: H04B5/00 ,  H03K9/00 ,  H03D3/24 ,  G01R33/00 ,  G01R33/028

CPC classification number: H04B5/0075

Abstract: A magnetic field communication method and apparatus using a giant magnetoimpedance (GMI) magnetometer are disclosed. The magnetic field communication apparatus includes a GMI magnetometer configured to detect a first communication signal based on a received magnetic field signal, a first signal extractor configured to extract a second communication signal comprising a message signal from the first communication signal, a second signal extractor configured to extract a third communication signal by removing a magnetization frequency signal from the second communication signal, and a third signal extractor configured to extract the message signal by removing a carrier wave frequency signal from the third communication signal.

公开(公告)号：US11955271B2

公开(公告)日：2024-04-09

申请号：US18200759

申请日：2023-05-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Korea Advanced Institute of Science and Technology

Inventor： Jang Yeol Kim ,  In Kui Cho ,  Hyunjoon Lee ,  Sang-Won Kim ,  Seong-Min Kim ,  Jung Ick Moon ,  Woo Cheon Park ,  Je Hoon Yun ,  Jaewoo Lee ,  Ho Jin Lee ,  Dong Won Jang ,  Kibeom Kim ,  Seungyoung Ahn

IPC: H01F27/32 ,  G01R33/02 ,  H01F27/24 ,  H01F27/28 ,  H01F41/04

CPC classification number: H01F27/325 ,  G01R33/02 ,  H01F27/24 ,  H01F27/2804 ,  H01F41/041

Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

公开(公告)号：US11699549B2

公开(公告)日：2023-07-11

申请号：US17189788

申请日：2021-03-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Korea Advanced Institute of Science and Technology

Inventor： Jang Yeol Kim ,  In Kui Cho ,  Hyunjoon Lee ,  Sang-Won Kim ,  Seong-Min Kim ,  Jung Ick Moon ,  Woo Cheon Park ,  Je Hoon Yun ,  Jaewoo Lee ,  Ho Jin Lee ,  Dong Won Jang ,  Kibeom Kim ,  Seungyoung Ahn

IPC: H01F27/32 ,  H01F27/24 ,  H01F41/04 ,  H01F27/28 ,  G01R33/02

CPC classification number: H01F27/325 ,  G01R33/02 ,  H01F27/24 ,  H01F27/2804 ,  H01F41/041

Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

公开(公告)号：US11271426B2

公开(公告)日：2022-03-08

申请号：US17096169

申请日：2020-11-12

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seungyoung Ahn ,  Chan Jun Park ,  Jaehyoung Park ,  Yujun Shin ,  Sungryul Huh ,  Bomson Lee

IPC: H02J50/05 ,  H02J50/00 ,  B64C39/02

Abstract: According to one embodiment of the present disclosure, there is provided a capacitive coupler structure, including: power transmitters, each including a first metal plate and a second metal plate, and power receivers, each including a third metal plate and a fourth metal plate, where the first metal plate and the third metal plate form a first capacitor, the second metal plate and the fourth metal plate form a second capacitor, and each center of gravity of the first metal plate through the fourth metal plate is aligned on a single vertical line, and the first metal plate through the fourth metal plate form capacitive couplings.

公开(公告)号：US10971956B2

公开(公告)日：2021-04-06

申请号：US16566595

申请日：2019-09-10

Applicant: Korea Advanced Institute of Science and Technology ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Seungyoung Ahn ,  Jaehyoung Park ,  Bomson Lee ,  Hongkyun Kim

IPC: H02J50/70 ,  H02J50/12 ,  H02J50/40 ,  G01R33/02 ,  H05K9/00

Abstract: A leakage magnetic field shielding device includes: a leakage magnetic field determining unit for determining phase and magnitude of a leakage magnetic field based on information obtained from a power supply device and a current collector device; a shielding current controller for determining a shielding current based on the phase and magnitude of the leakage magnetic field and supplying the determined shielding current to the leakage magnetic field shielding device; and a shielding unit for shielding the leakage magnetic field by generating a shielding magnetic field in accordance with the supply of the shielding current. The shielding unit has a multiple resonance characteristic depending on an arrangement of capacitors and coils and is disposed to surround the power supply device or the current collector device. The shielding magnetic field has resonance frequencies canceling magnetic fields corresponding to fundamental frequency and multiple frequency of the leakage magnetic field.