APPARATUS AND METHOD FOR REDUCING ELECTROMAGNETIC WAVE IN WIRELESS POWER TRANSMISSION DEVICE
First Claim
1. A wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device comprising:
- a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil;
a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil; and
a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver.
1 Assignment
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Accused Products
Abstract
Provided is a wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device including a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil, a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil, and a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver.
19 Citations
18 Claims
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1. A wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device comprising:
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a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil; a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil; and a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of reducing an electromagnetic wave except for a signal to be transmitted during power signal transmission in a wireless power transmission device, the method comprising:
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generating a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil; reducing a harmonic component of the high-frequency power signal using a third coil inserted between the first coil and a second coil; and generating an induced current by allowing a signal except for the reduced harmonic component in the generated magnetic field to pass through the second coil. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of reducing an electromagnetic wave except for a signal to be transmitted during power signal transmission in a wireless power transmission device, the method comprising:
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generating a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil; reducing a harmonic component of the high-frequency power signal using a third coil disposed on a plane on which at least one of the first coil or a second coil is disposed; and generating an induced current by allowing the generated magnetic field to pass through the second coil. - View Dependent Claims (16, 17, 18)
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Specification