Shielded Electrical Cable
1 Assignment
0 Petitions
Accused Products
Abstract
A shielded electrical cable (2202) includes a plurality of conductor sets (2204a, 2204b) that extend along the length of the cable and are spaced apart from each other along the width of the cable. Each conductor set (2204a, 2204b) includes one or more insulated conductors (2206a, 2206b), and first and second shielding films (2208) that are disposed on opposite first and second sides of the cable. The first and second films (2208) include cover portions (2207) and pinched portions (2209). The cable (2202) also includes an EMI absorbine layer (2250). The maximum separation between the first cover portions of the first and second shielding films is D. The minimum separation between the first pinched portions (2209) of the first and second shielding films (2208) is d1. d1/D is less then 0.25. The minimum separation between the first cover portion (2207) of the first and second shielding films (2208) in a region between the first and second insulated conductors (2206a, 2206b) is d2. d2/D is greater than 0.33.
74 Citations
24 Claims
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1-10. -10. (canceled)
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11. A shielded electrical cable, comprising:
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a plurality of conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable, each conductor set including one or more insulated conductors; first and second shielding films disposed on opposite first and second sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor set; a first EMI absorbing layer disposed on the first side of the cable; and a first adhesive layer bonding the first shielding film to the second shielding film in the pinched portions of the cable; wherein; the plurality of conductor sets comprises a first conductor set that comprises neighboring first and second insulated conductors and has corresponding first cover portions of the first and second shielding films and corresponding first pinched portions of the first and second shielding films forming a first pinched region of the cable on one side of the first conductor set; a maximum separation between the first cover portions of the first and second shielding films is D; a minimum separation between the first pinched portions of the first and second shielding films is d1; d1/D is less than 0.25; a minimum separation between the first cover portions of the first and second shielding films in a region between the first and second insulated conductors is d2; and d2/D is greater than 0.33. - View Dependent Claims (12, 13, 14, 15)
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16. A shielded electrical cable, comprising:
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a plurality of conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable, each conductor set including one or more insulated conductors; first and second shielding films disposed on opposite first and second sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor set; a first EMI absorbing layer disposed on the first side of the cable; and a first adhesive layer bonding the first shielding film to the second shielding film in the pinched portions of the cable; wherein; the plurality of conductor sets comprises a first conductor set that comprises neighboring first and second insulated conductors and has corresponding first cover portions of the first and second shielding films and corresponding first pinched portions of the first and second shielding films forming a first pinched cable portion on one side of the first conductor set; a maximum separation between the first cover portions of the first and second shielding films is D; a minimum separation between the first pinched portions of the first and second shielding films is d1; d1/D is less than 0.25; and a high frequency electrical isolation of the first insulated conductor relative to the second insulated conductor is substantially less than a high frequency electrical isolation of the first conductor set relative to an adjacent conductor set. - View Dependent Claims (17, 18, 19)
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20. A shielded electrical cable, comprising:
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a plurality of conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable, each conductor set including one or more insulated conductors; first and second shielding films including concentric portions, pinched portions, and transition portions arranged such that, in transverse cross section, the concentric portions are substantially concentric with one or more end conductors of each conductor set, the pinched portions of the first and second shielding films in combination form pinched portions of the cable on two sides of the conductor set, and the transition portions provide gradual transitions between the concentric portions and the pinched portions; and a first EMI absorbing layer disposed on the plurality of conductor sets;
whereineach shielding film comprises a conductive layer; a first one of the transition portions is proximate a first one of the one or more end conductors and has a cross-sectional area A1 defined as an area between the conductive layers of the first and second shielding films, the concentric portions, and a first one of the pinched portions proximate the first end conductor, wherein A1 is less than a cross-sectional area of the first end conductor; and each shielding film is characterizable in transverse cross section by a radius of curvature that changes across the width of the cable, the radius of curvature for each of the shielding films being at least 100 micrometers across the width of the cable. - View Dependent Claims (21, 22, 23)
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24. A shielded electrical cable, comprising:
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a plurality of conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable, each conductor set including one or more insulated conductors; first and second shielding films including concentric portions, pinched portions, and transition portions arranged such that, in transverse cross section, the concentric portions are substantially concentric with one or more end conductors of each conductor set, the pinched portions of the first and second shielding films in combination form pinched regions of the cable on two sides of the conductor set, and the transition portions provide gradual transitions between the concentric portions and the pinched portions; and a first EMI absorbing layer disposed on the plurality of conductor sets;
whereinone of the two shielding films includes a first one of the concentric portions, a first one of the pinched portions, and a first one of the transition portions, the first transition portion connecting the first concentric portion to the first pinched portion; the first concentric portion has a radius of curvature R1 and the transition portion has a radius of curvature r1; and R1/r1 is in a range from 2 to 15.
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Specification