USB CABLE FOR SUPER SPEED DATA TRANSMISSION
A USB cable for transmitting data at superspeed at a frequency of at least 10 GHz is provided, comprising a jacket, and positioned within said jacket at least a power cable and a plurality of shielded insulated conductors for transmitting said data at speeds up to 10 Gbps per channel, the insulation of said insulated conductors exhibiting a dissipation factor of no greater than 0.00035 at 10 GHz, and comprising melt-fabricable perfluoropolymer, such as tetrafluoroethylene/hexafluoropropylene copolymer or tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer.
1 . A USB cable for transmitting data at superspeed at a frequency of at least 10 GHz, comprising a jacket, and positioned within said jacket at least a power cable and a plurality of shielded insulated conductors for transmitting said data at speeds up to 10 Gbps per channel, the insulation of said insulated conductors exhibiting a dissipation factor of no greater than 0.00035 at 10 GHz and comprising melt-fabricable perfluoropolymer.
2 . The cable of claim 1 wherein said dissipation factor is no greater than 0.00031.
3 . The USB cable of claim 1 wherein said insulated conductors are coaxial cables, each of said insulated conductors being shielded.
4 . The USB cable of claim 3 wherein the conductor in each said coaxial cables has a diameter of no greater than 9.8 mils (0.249 mm) and the thickness of the insulation of said insulated conductor insulation is no greater than 8.2 mils (0.21 mm).
5 . The USB cable of claim 4 wherein said thickness of said insulation is no greater than 6.4 mils (0.16 mm).
6 . The USB cable of claim 3 wherein the conductor in each said coaxial cables has a diameter of no greater than 7.9 mils (0.201 mm) and the thickness of the insulation of said insulated conductors is no greater than 6.4 mils (0.16 mm).
7 . The USB cable of claim 6 wherein said thickness of said insulation is no greater than 4.9 mils (0.12 mm).
8 . The USB cable of claim 1 wherein said insulated conductors are either twisted pair or twinaxial pair, each of said pair being shielded.
9 . The USB cable of claim 8 wherein the conductor of said insulated conductors in said twisted pair has a diameter of no greater than 7.9 mils (0.201 mm) and the thickness of the insulation of said insulated conductors is no greater than 5.6 mils (0.14 mm).
10 . The USB cable of claim 8 wherein the conductor of said insulated conductors in said twisted pair has a diameter of no greater than 9.8 mils (0.249 mm) and the thickness of the insulation of said insulated conductors is no greater than 7.5 mils (0.19 mm).
11 . The USB cable of claim 8 wherein the conductor of said insulated conductors in said twinaxial pair has a diameter of no greater than 7.9 mils (0.201 mm) and the thickness of the insulation of said insulated conductors is no greater than 6.4 mils (0.16 mm).
12 . The USB cable of claim 8 wherein the conductor of said insulated conductors in said twinaxial pair has a diameter of no greater than 9.8 mils (0.249 mm) and the thickness of the insulation of said insulated conductors is no greater than 8.2 mils (0.21 mm).
13 . The USB cable of claim 1 wherein the total amount of —CONH 2 , —COF, —COOH, —CH 2 OH, and —COOCH 3 thermally unstable end groups of said perfluoropolymer are no greater than 10 per 10 6 carbon atoms.
14 . The USB cable of claim 1 wherein said perfluoropolymer is fluorinated to convert the thermally unstable end groups selected from —CONH 2 , —COF, —COOH, —CH 2 OH, and —COOCH 3 of said perfluoropolymer to —CF 3 end groups, and wherein the total amount of said thermally unstable end groups of the resultant fluorinated perfluoropolymer is no greater than 10 per 10 6 carbon atoms.
15 . The USB cable of claim 1 containing at least eight of said insulated conductors as shielded differential pairs.
16 . The USB cable of claim 1 wherein said insulation is foamed.
17 . The USB cable of claim 1 wherein said melt-fabricable perfluoropolymer is tetrafluoroethylene/hexafluoropropylene copolymer or tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, wherein the alkyl contains 1 to 5 carbon atoms.
18 . The USB cable of claim 1 wherein the melt flow rate for said melt-fabricable perfluoropolymer is at least 28 g/10 min.