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Long range RFID transponder

  • US 20070285244A1
  • Filed: 04/17/2007
  • Published: 12/13/2007
  • Est. Priority Date: 04/28/2006
  • Status: Active Grant
First Claim
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1. A radio frequency identification device (RFID) comprising in combination:

  • (a) a piezoelectric crystal; and

    (b) a passive magnetic field sensor having magnetostrictive material, said sensor being responsive to a magnetic field to displace said piezoelectric crystals to thereby generate electricity.

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