APPARATUS, A SYSTEM AND A METHOD FOR ENABLING ELECTROMAGNETIC ENERGY TRANSFER

  • US 20090237194A1
  • Filed: 09/11/2007
  • Published: 09/24/2009
  • Est. Priority Date: 09/18/2006
  • Status: Active Grant
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First Claim
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1. An apparatus with a charging fixture with a contact surface for electromagnetic energy transfer via the contact surface to a plurality of electronic devices arranged with respective pick up circuits for receiving the electromagnetic energy when said electronic devices are positioned on the contact surface, said apparatus comprising a primary winding arranged substantially complementary to the contact surface, whereinthe primary winding is arranged as a part of a resonator circuit conceived toenable electromagnetic energy transfer to respective pick-up circuits, wherein the primary winding comprises a plurality of coil elements arranged to generate a net alternating magnetic field substantially within the whole contact surface, wherein the coil elements are arranged in an overlapping fashion, an area of each coil element being further arranged with a sensor for detecting a presence of the electronic device in the area of the coil element for selectively activating the coil element on demand.

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