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Magnetic resonance type magnetic field shielding unit for wireless power transfer, wireless power transfer module and electronic device including this
Magnetic resonance type magnetic field shielding unit for wireless power transfer, wireless power transfer module and electronic device including this
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机译:用于无线电力传输的磁共振型磁场屏蔽单元,无线电力传输模块和包括该单元的电子设备
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摘要
A wireless power transmission module operable in magnetic resonance method including a radiator unit for wireless power transmission, and a magnetic field shielding unit, disposed on a side of the radiator unit, for preventing disturbance of transmission and reception of the radiator due to the conductor and improving radiator characteristics, by providing a magnetic field shielding layer which includes shredded Fe-based alloy fragments and a dielectric filling at least a part of gaps between shredded Fe-based alloy fragments and some adjacent ones of the fragments to reduce eddy currents, to improve flexibility of and reduce eddy currents in the magnetic field shielding unit. When a wireless power signal is transmitted and received in a magnetic resonance method, the influence of a magnetic field on components of s a mobile terminal or a user can be blocked. Interference with the transmission/reception of the power signal due to the conductor can be minimized or prevented. The radiator characteristics and wireless power transmission efficiency can be remarkably improved.
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