Resonant compensating loop for shielding of metal for magnetically coupled NFC and/or RFID devices, and methods of making and using the same
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United States of America Patent
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Sep 5, 2017
Issued Date -
N/A
app pub date -
Dec 22, 2014
filing date -
Dec 22, 2014
priority date (Note) -
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Abstract
A near field communication device, and methods of manufacturing and using the same. The near field communication device includes a receiver configured to convert a received near field signal to an electric signal, a transmitter configured to generate a transmittable near field signal, a dielectric substrate within a housing, an antenna on the dielectric substrate, and a compensating loop within the housing and coupled to the antenna. The antenna is configured to receive the received near field signal and to transmit or broadcast the transmittable near field signal. The compensating loop is electromagnetically coupled to the antenna and advantageously mitigates or counteracts an electromagnetic effect of metal on or near a surface of the dielectric substrate opposite from the antenna.
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