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Triple axis sensor on a single layer printed circuit

  • US 10,330,742 B2
  • Filed: 12/23/2016
  • Issued: 06/25/2019
  • Est. Priority Date: 12/23/2016
  • Status: Active Grant
First Claim
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1. Apparatus, comprising:

  • a flexible insulating substrate, having a first side and a second side, rolled about an axis parallel to the substrate;

    a first planar conducting spiral that is right-handed relative to a normal to the substrate, and a second planar conducting spiral that is left-handed relative to the normal, formed on the first side of the substrate,the first conducting spiral having a first initial termination and a first final termination,the second conducting spiral having a second initial termination and a second final termination,the spirals having a displacement therebetween, with a preset magnitude so that when the substrate is rolled about the axis the first initial termination aligns with the second initial termination;

    and a via penetrating the substrate from the first side to the second side so as to interconnect the first initial termination and the second initial termination;

    a third planar conducting spiral that is right-handed relative to the normal to the substrate, and a fourth planar conducting spiral that is left-handed relative to the normal, formed on the first side of the substrate,the third conducting spiral having a third initial termination and a third final termination, the fourth conducting spiral having a fourth initial termination and a fourth final termination,the third and the fourth spirals having the displacement with the preset magnitude therebetween,and wherein a first line segment joining the third and the fourth spirals has a second displacement from a second line segment joining the first and the second spirals, and so that when the substrate is rolled about the axis the third initial termination aligns with the fourth initial termination;

    and a second via penetrating the substrate from the first side to the second side so as to interconnect the third initial termination and the fourth initial termination.

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