Ferrite Antennas for Wireless Power Transfer

  • US 20090224608A1
  • Filed: 02/23/2009
  • Published: 09/10/2009
  • Est. Priority Date: 02/24/2008
  • Status: Active Grant
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First Claim
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1. A method, comprising:

  • integrating a ferrite element in an electronic device, said ferrite element including an inductive part wound thereon, as an antenna, said ferrite element including a first coil portion which is connected in series with a capacitor to form an LC resonant circuit value that is resonant with an applied magnetic driving signal, and also including a second coil portion wound thereon, electrically separated from the first coil portion; and

    receiving power wirelessly using said ferrite element, at a frequency that is substantially resonant with a value determined according to said LC resonant circuit, and producing an output using said second coil portion to drive said electronic device.

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