NEAR FIELD COMMUNICATION ANTENNA TUNING BASED ON TEMPERATURE
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United States of America Patent
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app pub date -
Apr 28, 2015
filing date -
Apr 27, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A wireless device includes a Near Field Communication (NFC) interface, a NFC antenna, ferrite shielding, NFC antenna tuning circuitry coupled to the NFC interface and to the NFC antenna, and processing circuitry. The processing circuitry receives temperature input from a temperature sensor that is indicative of a temperature of at least one of the NFC antenna or the ferrite shielding, determines at least one NFC antenna tuning setting based upon the temperature input and configures the NFC antenna tuning circuitry based upon the at least one NFC antenna tuning setting. The NFC antenna tuning circuitry may include a plurality of lumped circuit elements including at least one controllable capacitance or inductance. The temperature sensor may be stand alone, included with the NFC interface, included with a battery, included with the processor, included with another wireless interface of the wireless device, or included with another component of the wireless device.
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