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Planar inductor

  • US 6,175,293 B1
  • Filed: 05/11/1993
  • Issued: 01/16/2001
  • Est. Priority Date: 09/30/1988
  • Status: Expired due to Fees
First Claim
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1. A planar inductor, comprising:

  • a planar inductance element comprising a coil having a plurality of windings, the plurality of windings all extending in the same plane; and

    at least one ferromagnetic layer stacked on said planar inductance element;

    wherein said at least one ferromagnetic layer comprises a plurality of ferromagnetic sub-layers stacked directly upon one another with no intervening structure between the plurality of sub-layers.

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