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Magnetic shielding unit for wireless power transmission and wireless power transmission module including same
Disclosed is a magnetic field shielding unit for wireless power transmission. The magnetic field shielding unit for wireless power transmission includes a magnetic shielding layer formed of ferrite fragments 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.).
Magnetic shielding unit for wireless power transmission and wireless power transmission module including same
Disclosed is a magnetic field shielding unit for wireless power transmission. The magnetic field shielding unit for wireless power transmission includes a magnetic shielding layer formed of ferrite fragments 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.).
Magnetic shielding unit for wireless power transmission and wireless power transmission module including same
LEE WOONG YONG (author) / JANG KIL JAE (author) / KIM SEONG TAE (author) / KIM SU JUNG (author)
2022-08-09
Patent
Electronic Resource
English
IPC:
H05K
PRINTED CIRCUITS
,
Gedruckte Schaltungen
/
C04B
Kalk
,
LIME
/
H01F
MAGNETS
,
Magnete
/
H01Q
Antennen
,
ANTENNAS, i.e. RADIO AERIALS
/
H02J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
,
Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung
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