Field as a driver for a passive circuit and antennae

  1. Rfid: wondering what some more of the details are of this technology.

    Put a field as a driver for a passive circuit and antennae emmitting some digital code at a frequncy, and some other receiver tuned to receive this and process..

    Anyone know some more specifics?
     
  2. jcsd
  3. dlgoff

    dlgoff 3,047
    Science Advisor
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    2014 Award

  4. Pretty informative, but I'm wondering how the mechanism of an EM wave triggers some IC with stored information - to drive a signal in an antennae with that info.. More of a wireless digital signal transmission question

    Tx
     
  5. dlgoff

    dlgoff 3,047
    Science Advisor
    Gold Member
    2014 Award

    Re: rfid

    http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid2.htm
     
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