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Planar magnetic frame inductors having open cores

  • US 6,573,818 B1
  • Filed: 03/31/2000
  • Issued: 06/03/2003
  • Est. Priority Date: 03/31/2000
  • Status: Expired due to Term
First Claim
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1. A generally planar inductor device, comprising:

  • a top magnetic layer;

    a bottom magnetic layer; and

    a plurality of conductive coils disposed between said top and bottom magnetic layers, each of said top and bottom magnetic layers having an inner circumference parallel to an outer circumference, a width between the inner and outer circumferences being substantially smaller than the inner circumference, wherein said conductive coils produce a magnetic field flowing in a radial direction thereof.

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