Cable for high speed data communications
View Patent ↗A cable for high speed data communications and methods for manufacturing such cable are disclosed, the cable including a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer. The cable also includes conductive shield material wrapped in a rotational direction at a rate along and about the longitudinal axis around the inner conductors and the dielectric layers, including overlapped wraps of the conductive shield material along and about the longitudinal axis, the conductive shield material having a variable width. Transmitting signals on the cable including transmitting a balanced signal characterized by a frequency in the range of 7-9 gigahertz on the cable.
1. A method of manufacturing a cable for high speed data communications, the method comprising:
wrapping, in a rotational direction at a rate along and about a longitudinal axis, conductive shield material around a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer, including overlapping wraps of the conductive shield material along and about the longitudinal axis, the conductive shield material having a variable width.
2. The method of claim 1 wherein:
the overlapped wraps of the conductive shield material create a bandstop filter that attenuates signals at frequencies in a stopband; and
the variable width of the conductive shield material reduces the attenuation of signals having frequencies in the stophand.
3. The method of claim 2 wherein the stopband is characterized by a center frequency, and the center frequency is dependent upon the composition of the conductive shield material, the width of the conductive shield material, and the rate.
4. The method of claim 1 wherein:
wrapping conductive shield material around a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer further comprises wrapping conductive shield material around the inner conductors, the dielectric layers, and also a drain conductor.
5. The method of claim 1 further comprising:
enclosing the conductive shield material and the first and second inner conductors in a non-conductive layer.
6. The method of claim 1 wherein the conductive shield material comprises a strip of aluminum foil having a variable width that is relatively small with respect to the length of the cable.
7. A method of transmitting a signal on a cable for high speed data communications, the method comprising:
transmitting a balanced signal characterized by a frequency in the range of 7-9 gigahertz on a cable, the cable comprising:
a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer; and
conductive shield material wrapped in a rotational direction at a rate along and about the longitudinal axis around the inner conductors and the dielectric layers, including overlapped wraps of the conductive shield material along and about the longitudinal axis, the conductive shield material having a variable width.
8. The method of claim 7 wherein:
the overlapped wraps of the conductive shield material create a bandstop filter that attenuates signals at frequencies in a stopband; and
the variable width of the conductive shield material reduces the attenuation of signals having frequencies in the stopband.
9. The method of claim 8 wherein the stopband is characterized by a center frequency, and the center frequency is dependent upon the composition of the conductive shield material, the width of the conductive shield material, and the rate.
10. The method of claim 7 wherein:
conductive shield material wrapped around a first inner conductor enclosed by a first dielectric layer and a second inner conductor enclosed by a second dielectric layer further comprises conductive shield material wrapped around the inner conductors, the dielectric layers, and also a drain conductor.
11. The method of claim 7 wherein the cable further comprises a non-conductive layer that encloses the conductive shield material and the first and second inner conductors.
12. The method of claim 7 wherein the conductive shield material comprises a strip of aluminum foil having a variable width that is relatively small with respect to the length of the cable.