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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10930418 B1

PDFFull Text
Date of Patent:
Feb. 23, 2021

Filed:

Sep. 30, 2016

Magnetic shielding unit for magnetic security transmission, module comprising same, and portable device comprising same

Applicant:

Amosense Co., Ltd., Cheonan-si, KR;

Inventors:

Woong Yong Lee, Incheon, KR;

Seong Tae Kim, Daegu, KR;

Kyung Pyo Hong, Suwon-si, KR;

Assignee:

Amosense Co., Ltd., Cheonan-si, KR;

Attorney:

Daly Crowley Mofford & Durkee, LLP

Primary Examiner:

Kevin M Bernatz

Int. Cl.
CPC ...
H01F 1/10 (2006.01); H01F 10/20 (2006.01); H02J 50/70 (2016.01); H01Q 7/00 (2006.01); H04B 5/00 (2006.01); H01Q 21/30 (2006.01); H02J 50/12 (2016.01); H04B 7/06 (2006.01); H01F 27/36 (2006.01); H02J 50/10 (2016.01); H02J 50/20 (2016.01); H01F 38/14 (2006.01); H05K 9/00 (2006.01); H01Q 3/44 (2006.01); H01Q 1/38 (2006.01);
U.S. Cl.
CPC ...
H01F 1/10 (2013.01); H01F 10/20 (2013.01); H01F 27/36 (2013.01); H01F 38/14 (2013.01); H01Q 7/00 (2013.01); H01Q 21/30 (2013.01); H02J 50/10 (2016.02); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02J 50/70 (2016.02); H04B 5/00 (2013.01); H04B 5/0031 (2013.01); H04B 5/0037 (2013.01); H04B 5/0081 (2013.01); H04B 7/0608 (2013.01); H05K 9/0075 (2013.01); H01Q 1/38 (2013.01); H01Q 3/44 (2013.01); Y10T 428/32 (2015.01);
Abstract

Disclosed is a magnetic field shielding unit for magnetic security transmission. The magnetic field shielding unit for magnetic security transmission includes a magnetic shielding layer formed of fragments of ferrite containing magnesium oxide (MgO) shredded to improve flexibility of the magnetic field shielding unit. The ferrite containing magnesium oxide has a real part (μ') of the complex permeability of 650 or more at a frequency of 100 kHz. Accordingly, it is possible to prevent influence of a magnetic field on components of a mobile terminal device or a body of a user who uses the same, and to further increase the characteristics of the combined antennas even if the magnetic field shielding unit is combined with various kinds and purposes of antennas having various structures, shapes, sizes and intrinsic characteristics (inductance, resistivity, etc.).

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