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Probe system

  • US 5,429,132 A
  • Filed: 02/22/1993
  • Issued: 07/04/1995
  • Est. Priority Date: 08/24/1990
  • Status: Expired due to Fees
First Claim
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1. In a probe system for use in an enclosed, nonconducting environment and including a probe having at least one sensing coil movable with said probe, an antenna array, an electrical source for supplying said antenna array with at least one AC electrical signal for producing corresponding induced electrical signals in said at least one sensing coil, and electronic processing means connected to said at least one sensing coil for processing said induced signals and producing an indication of the three-dimensional location of said probe with respect to said antenna array, the improvement comprising said antenna array wherein said array has two sets of dipole antennas comprising elongated coils arranged in a substantially planar and mutually orthogonal array, and said electrical source includes means for supplying said at least one AC electrical signal to said antenna coils either simultaneously or sequentially.

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