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：US20210280365A1

公开(公告)日：2021-09-09

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

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：US20230290563A1

公开(公告)日：2023-09-14

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 ,  H01F27/24 ,  G01R33/02 ,  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：US20210194133A1

公开(公告)日：2021-06-24

申请号：US17122218

申请日：2020-12-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H01Q7/00 ,  H04B5/00 ,  G01R33/36

Abstract: An apparatus and method for transmitting and receiving magnetic field signals in a magnetic field communication system are provided. The apparatus includes a controller configured to generate a communication signal, matching units that are configured to receive the communication signal and that respectively correspond to different matching frequencies, and loop antennas that are connected to the matching units, respectively, and that are configured to convert communication signals according to the different matching frequencies into magnetic transmission signals in the form of magnetic field energy and to transmit the magnetic transmission signals.