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Capacitive shield for containing radiofrequency magnetic fields

  • US 20010035504A1
  • Filed: 04/04/2001
  • Published: 11/01/2001
  • Est. Priority Date: 04/05/2000
  • Status: Active Grant
First Claim
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1. An RF magnetic shield for use in a radiofrequency system including an RF magnetic field resonator for generating an RF magnetic field having a magnetic component and an electric component, the RF magnetic shield comprising:

  • a dielectric layer having a plurality of conductive regions separated by non-conductive regions on each side of the dielectric layer, the conductive regions overlapping on opposite sides of the dielectric layer to form a plurality capacitive elements which are partially non-conductive at radio frequencies such that the electrical component tangent to the shield is other than zero and the magnetic component perpendicular to the shield is essentially zero.

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