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RFID TRANSPONDER

  • US 20080030307A1
  • Filed: 03/09/2007
  • Published: 02/07/2008
  • Est. Priority Date: 08/03/2006
  • Status: Abandoned Application
First Claim
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1. A radio frequency identification (RFID) transponder, comprising:

  • an LC resonant circuit having a first high frequency (HF) terminal and a second HF terminal, producing an AC signal, and transmitting a data;

    a full-wave rectifying circuit having a high voltage terminal, a low voltage terminal, a first terminal electrically connected to the first HF terminal, and a second terminal electrically connected to the second HF terminal, and rectifying the AC signal to a DC signal; and

    a first data modulating circuit having a third and a fourth terminals respectively electrically connected to the low voltage terminal and the second HF terminal,wherein the first data modulating circuit is coupled to a part of the full-wave rectifying circuit so that the transponder respectively transmits the data and is charged when the AC signal is respectively a negative AC signal and a positive AC signal.

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