Radio frequency suppressing cable
AssigneeKoninklijke Philips Electronics N.V.
InventorPeter J. Massey
Life of this patent
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Abstract
A radio frequency suppressing cable has at least one conductor and a resistive layer surrounding the at least one conductor and insulated from the at least one conductor. The bulk resistance of material included in the resistive layer is greater than that of the material of the at least one conductor. In addition, the thickness of the resistive layer is greater than the skin depth δ for the radio frequency, where δ = 1 π σ f μ r μ o where σ is the conductivity of the material, f is the frequency, μr is the magnetic permeability relative to that of free space, and μo is the magnetic permeability of free space.
Claims11
A cable comprising at least one conductor and a resistive layer surrounding and being insulated from the at least one conductor, wherein the bulk resistance of material comprising the resistive layer is greater than that of the material comprising the at least one conductor and the thickness of the resistive layer is greater than the skin depth of the resistive layer for a particular frequency.
Dependencies are inferred from the claim text.