Signal transmission cable with a noise absorbing high loss magnetic film formed on a sheath of the cable
First Claim
1. A signal transmission cable comprising a conductor portion for transmitting an electric signal therethrough and an insulator sheath covering said conductor portion, wherein a high loss magnetic film is formed on at least one area of said insulator sheath and covers at least a part of an outer surface of said sheath, said high loss magnetic film having a thickness of 0.3-20 μ
- m and the maximum complex permeability μ
″
max in a frequency range of 0.1-10 gigahertz (GHz).
3 Assignments
0 Petitions
Accused Products
Abstract
A signal transmission cable (10) having a conductor portion for transmitting signals and an insulator sheath (14) covering the conductor portion, and a high loss magnetic film (15) [is] formed on at least one part of the outer surface of the insulator sheath. The high loss magnetic film has the maximum complex permeability μ″max in a frequency range of 0.1-10 gigahertz (GHz). An example of a magnetic composition of the high loss magnetic film is a M-X-Y magnetic composition wherein M is a metallic magnetic material selected from among Fe, Co, and/or Ni, X is an element or elements other than M and Y, and Y is F, N, and/or O, the M-X-Y magnetic composition having a sufficient concentration of M in the composition so that the M-X-Y magnetic compostion has a saturation magnetization of 35-80% of that of the metallic magnetic material M alone.
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Citations
39 Claims
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1. A signal transmission cable comprising a conductor portion for transmitting an electric signal therethrough and an insulator sheath covering said conductor portion, wherein a high loss magnetic film is formed on at least one area of said insulator sheath and covers at least a part of an outer surface of said sheath, said high loss magnetic film having a thickness of 0.3-20 μ
- m and the maximum complex permeability μ
″
max in a frequency range of 0.1-10 gigahertz (GHz). - View Dependent Claims (2, 3, 4, 5)
- m and the maximum complex permeability μ
-
6. A signal transmission cable comprising a conductor portion for transmitting an electric signal therethrough and an insulator sheath covering said conductor portion, wherein a high loss magnetic film is formed on at least one area of said insulator sheath and covers at least a part of an outer surface of said sheath, said high loss magnetic film having a thickness of 0.3-20 μ
- m, a DC specific resistance of 100 μ
Ω
·
cm or more, and the maximum complex permeability μ
″
max in a frequency range of 0.1-10 gigahertz (GHz). - View Dependent Claims (7, 8, 9, 10)
- m, a DC specific resistance of 100 μ
-
11. A signal transmission cable comprising a conductor portion for transmitting an electric signal therethrough and an insulator sheath covering said conductor portion, wherein a high loss magnetic film is formed on at least one area of said insulator sheath and covers at least a part of an outer surface of said sheath, said high loss magnetic film being made of a M-X-Y magnetic composition comprising M, X and Y, where M is a metallic magnetic material consisting of Fe, Co, and/or Ni, X being element or elements other than M and Y, and Y being F, N, and/or O, said M-X-Y magnetic composition having a concentration of M in the composition so that said M-X-Y magnetic composition has a saturation magnetization of 35-80% of that of the metallic bulk of magnetic material comprising M alone, and said high loss magnetic film having the maximum complex permeability μ
- ″
max in a frequency range of 0.1-10 gigahertz (GHz). - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- ″
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25. A signal transmission cable comprising a conductor portion for transmitting an electric signal therethrough and an insulator sheath covering said conductor portion, wherein a high loss magnetic film is formed on at least one area of said insulator sheath and covers at least a part of an outer surface of said sheath, said high loss magnetic film being made of a M-X-Y magnetic composition comprising M, X and Y, where M is a metallic magnetic material consisting of Fe, Co, and/or Ni, X being at least one element selected form a group consisting of C, Bi, Si, Al, Mg, Ti, Zn, Hf, Sr, Nb, Ta, and rare-earth metals, and Y being F, N, and/or O, said M-X-Y magnetic composition having a concentration of M in the composition so that said M-X-Y magnetic composition has a saturation magnetization of 35-80% of that of the metallic bulk of magnetic material comprising M alone, and said high loss magnetic film having, a DC specific resistance of 100 μ
- Ω
·
cm or more, and the maximum complex permeability μ
″
max in a frequency range of 0.1-10 gigahertz (GHz). - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
- Ω
Specification