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Transceiving circuit for contactless communication

  • US 8,559,890 B2
  • Filed: 11/13/2008
  • Issued: 10/15/2013
  • Est. Priority Date: 11/19/2007
  • Status: Active Grant
First Claim
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1. A transceiving circuit for contactless communication comprising:

  • a transmitter being adapted to generate an electromagnetic carrier signal and to modulate the carrier signal according to transmitting data, an antenna having an inductor, which antenna is connected to and driven by the transmitter with the modulated carrier signal, andwherein AC coupling capacitors are coupled to the inductor of the antenna, wherein the AC coupling capacitors are further connected to inputs of switches the outputs of these switches being switchable between ground potential and inputs of rectifier means, the outputs of the rectifying means being fed to power supply rails of the transceiving circuit.

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