Transceiving circuit for contactless communication and NFC device or RFID reader/writer device comprising such a transceiving circuit
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United States of America Patent
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Apr 28, 2015
Grant Date -
Feb 24, 2011
app pub date -
Mar 18, 2009
filing date -
Mar 20, 2008
priority date (Note) -
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Abstract
A transceiving circuit (1, 1′) for contactless communication comprises transmitter means (3) being adapted to generate an electromagnetic carrier signal and to modulate the carrier signal according to transmitting data, and an antenna (5) being connected to and driven by the transmitter means (3) with the modulated carrier signal. At least one impedance-matching capacitor (C1a) is arranged serially to the antenna (5).
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