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Dual mode RFID communication device operating as a reader or tag

  • US 8,368,515 B2
  • Filed: 02/17/2010
  • Issued: 02/05/2013
  • Est. Priority Date: 02/18/2009
  • Status: Active Grant
First Claim
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1. A wireless communication card comprising:

  • a radio frequency (RF) antenna for transmitting and receiving wireless signals;

    a tuning circuit as a frequency filtering circuit connected to the RF antenna;

    a memory for storing data;

    a secondary rechargeable battery comprising a bare cell and two charge/discharge terminals connected to the bare cell;

    a protection circuit for controlling charge and discharge of the bare cell; and

    a plurality of antenna connection terminals connected to the RF antenna, wherein one of the plurality of antenna connection terminals is shared with one of the charge/discharge terminals such that the one terminal is configured to both supply power to a wireless communication controller set of a mobile communication device and connect the memory of the wireless communication card to the wireless communication controller set to transfer data via electrical current.

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