公开(公告)号：US10692648B2

公开(公告)日：2020-06-23

申请号：US15826299

申请日：2017-11-29

Applicant: WITS Co., Ltd.

Inventor： Seung Hee Oh ,  Doo Ho Park ,  Tae Jun Choi ,  Sung Nam Cho ,  Chang Hak Choi ,  Jung Young Cho

IPC: H01F27/36 ,  H01F27/34 ,  H02J7/02 ,  H01F27/28 ,  H02J50/12 ,  H02J50/10 ,  H02J50/70

Abstract: A magnetic field shielding structure includes a magnetic layer and a resonance reactive shielding circuit including a capacitor and a conductor connected to the capacitor and having a loop form. At least a portion of the magnetic layer overlaps an area surrounded by the conductor in a thickness direction of the magnetic layer.

公开(公告)号：US10460136B2

公开(公告)日：2019-10-29

申请号：US15803300

申请日：2017-11-03

Applicant: WITS Co., Ltd.

Inventor： Seung Min Lee ,  Sung Nam Cho ,  Ji Hyo Lee

IPC: G06K7/08

Abstract: A terminal for magnetic secure transmission (MST) includes a body including a magnetic head and a coil member wound around the magnetic head, and an electromagnetic wave shielding structure disposed around the magnetic head and being formed of a magnetic material.

公开(公告)号：US10923822B2

公开(公告)日：2021-02-16

申请号：US16011915

申请日：2018-06-19

Applicant: WITS Co., Ltd.

Inventor： Tae Jun Choi ,  Jung Young Cho ,  Seung Hee Oh ,  Sung Nam Cho ,  Chang Hak Choi

IPC: H01Q7/08 ,  H01Q1/22 ,  H01Q1/38 ,  H01Q1/44 ,  H01Q1/24 ,  H01Q1/00

Abstract: A wireless communications antenna includes: a magnetic body including one or more slits formed therein; and a coil part having solenoid form and disposed around the magnetic body, wherein the one or more slits are configured such that the magnetic body is not disconnected and a magnetic path of the magnetic body is continuous.

公开(公告)号：US10553949B2

公开(公告)日：2020-02-04

申请号：US15369015

申请日：2016-12-05

Applicant: WITS Co., Ltd.

Inventor： Sung Nam Cho ,  Jung Young Cho ,  Jae Hyuk Jang ,  Chang Hak Choi ,  Jeong Ki Ryoo ,  Soon Kwang Kwon

IPC: H01Q7/06 ,  H01Q1/27 ,  H01Q7/00

Abstract: A wireless communication antenna includes: a magnetic body including a plurality of bar-shaped unit ribbons arranged in columns, wherein the unit ribbons have shape anisotropy and a radiation direction on a side of the wireless communication antenna; and a solenoid coil including conductive patterns disposed around the magnetic body.