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SHIELDED ANTENNA TO REDUCE ELECTROMAGNETIC INTERFERENCE (EMI) AND RADIO FREQUENCY (RF) INTERFERENCE IN A WIRELESS POWER TRANSFER SYSTEM
SHIELDED ANTENNA TO REDUCE ELECTROMAGNETIC INTERFERENCE (EMI) AND RADIO FREQUENCY (RF) INTERFERENCE IN A WIRELESS POWER TRANSFER SYSTEM
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机译:无线电力传输系统中的屏蔽天线可降低电磁干扰(EMI)和无线电频率(RF)干扰
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摘要
An apparatus for wireless power transfer includes a transmit antenna configured to generate a wireless field to power or charge a load, a wireless charging area configured to receive a device to be wirelessly charged via the wireless field, the transmit antenna located outside of a periphery of the wireless charging area, and at least one shielding element overlapping the transmit antenna on a side of the transmit antenna from which the device is configured to be positioned within the wireless charging area, the at least one shielding element configured to diminish at least a portion of the wireless field such that the wireless field in the wireless charging area is stronger than the wireless field where the at least one shielding element overlaps the transmit antenna.
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