MODULATION CONTROL THROUGH ADAPTIVE PHASE ADJUSTMENT

MODULATION CONTROL THROUGH ADAPTIVE PHASE ADJUSTMENT

A Near Field Communication (NFC) enabled device is disclosed. The NFC device includes an antenna. The NFC device also includes an impedance matching network, a carrier frequency generator to generate a carrier wave, a receiver for receiving a magnetic induction wave, a transmitter, a driver circuit...

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Hauptverfasser: Gebhart Michael, Nunziata Fred George, Watzinger Hubert
Format: Patent
Sprache:eng
Schlagworte:
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
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creator Gebhart Michael
Nunziata Fred George
Watzinger Hubert
description A Near Field Communication (NFC) enabled device is disclosed. The NFC device includes an antenna. The NFC device also includes an impedance matching network, a carrier frequency generator to generate a carrier wave, a receiver for receiving a magnetic induction wave, a transmitter, a driver circuit configured to alter an impedance of an antenna network associated with the antenna between a first impedance and a second impedance and a control unit. The control unit is configured to derive a first phase difference between the received magnetic induction wave and an internal clock at the first impedance and a second phase difference between the received magnetic induction wave and the internal clock at the second impedance. The control unit is further configured to change a phase of the carrier wave based on a difference between the first phase difference and a second phase difference.
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subjects ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
title MODULATION CONTROL THROUGH ADAPTIVE PHASE ADJUSTMENT
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