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RFID TAGS WITH POWER RECTIFIERS THAT HAVE BIAS

  • US 20090237220A1
  • Filed: 06/01/2009
  • Published: 09/24/2009
  • Est. Priority Date: 09/26/2005
  • Status: Active Grant
First Claim
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1. A method for generating a rectified signal in a RFID tag, the method comprising:

  • receiving an alternating signal;

    coupling a first phase of the alternating signal to a gate and to a first non-controlling terminal of a first switching transistor, the first non-controlling terminal of the first switching transistor being one of a source and a drain of the first switching transistor;

    applying a first bias voltage between the first non-controlling terminal and the gate of the first switching transistor; and

    receiving a rectified voltage between the first non-controlling terminal and a second non-controlling terminal of the first switching transistor.

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