Noise suppression sheet and cable
AssigneeTDK Corporation
InventorsToshiro Okubo, Shun Kudo, Kazuki Onuma
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Abstract
A noise suppression sheet that includes a first magnetic layer. The first magnetic layer includes a plurality of first regions stacked in a thickness direction of the noise suppression sheet and a second region positioned between the first regions. The first magnetic layer includes a first metal component of Ni, a second metal component of Fe, and a third metal component other than Ni and Fe. The concentration of the third metal component in the second region is higher than the concentration of the third metal component in the first regions.
Claims15
A noise suppression sheet comprising a first magnetic layer,
- wherein the first magnetic layer includes a plurality of first regions stacked in a thickness direction of the noise suppression sheet and a second region positioned between the first regions,
- wherein the first magnetic layer includes a first metal component of Ni, a second metal component of Fe, and a third metal component other than Ni and Fe,
- wherein a thickness of the second region in the thickness direction of the noise suppression sheet is smaller than a thickness of each of the first regions in the thickness direction of the noise suppression sheet, and
- wherein a concentration of the third metal component in the second region is higher than a concentration of the third metal component in the first regions.
A noise suppression sheet comprising:
- a plurality of first regions containing a first magnetic material and stacked in a thickness direction thereof;
- and
- a second region containing a second magnetic material and positioned between the first regions,
- wherein each of the first and second magnetic materials contains a first metal component of Ni and a second metal component of Fe,
- wherein a proportion of the first metal component in the first magnetic material is higher than a proportion of the second metal component therein,
- wherein a proportion of the first metal component in the second magnetic material is higher than a proportion of the second metal component therein, and
- wherein the second region has a lower resistivity than each of the first regions.
A cable comprising:
- a cable body;
- and
- a noise suppression sheet wound around the cable body,
- wherein the noise suppression sheet comprises a first magnetic layer,
- wherein the first magnetic layer includes a plurality of first regions stacked in a thickness direction of the noise suppression sheet and a second region positioned between the first regions,
- wherein the first magnetic layer includes a first metal component of Ni, a second metal component of Fe, and a third metal component other than Ni and Fe,
- wherein a thickness of the second region in the thickness direction of the noise suppression sheet is smaller than a thickness of each of the first regions in the thickness direction of the noise suppression sheet, and
- wherein a concentration of the third metal component in the second region is higher than a concentration of the third metal component in the first regions.
Dependencies are inferred from the claim text.