High speed transmission cable
The present invention relates to a high speed transmission cable that includes a first conductor set, a dielectric film at least partially concentrically disposed around the first conductor set and a pinched portion forming an insulating envelope around the first conductor set. The dielectric film includes a base layer having a plurality of first protrusions formed on a first major surface of the base layer, wherein the dielectric film is disposed such that the base layer is partially concentric with the conductor set and wherein a portion of the first protrusions is disposed between the first conductor set and the base layer in a region where the base layer is concentric with the first conductor set.
1. A high speed transmission cable comprising
a conductor set comprising two parallel conductors extending along a length of the cable; and
a dielectric film comprising a first major surface and an opposing structured second major surface comprising a plurality of protrusions formed thereon, the dielectric film wrapped around the conductor set with at least some of the protrusions facing and contacting the conductors so that a first longitudinal end portion of the dielectric film is disposed between the two conductors and a longitudinal edge of the first longitudinal end portion is secured between two adjacent protrusions in the plurality of protrusions, and an opposing second longitudinal end portion of the dielectric film is wrapped over a portion of the first major surface of the dielectric film.
2. The high speed transmission cable of claim 1 , wherein the conductors are insulated conductors.
3. The high speed transmission cable of claim 1 , wherein the conductors are uninsulated conductors.
4. The high speed transmission cable of claim 1 , wherein the plurality of protrusions are formed on the structured second major surface only between the first and second longitudinal end portions.
5. The high speed transmission cable of claim 1 , wherein the two adjacent protrusions that secure the longitudinal edge of the first longitudinal end portion therebetween are taller than the other protrusions.
6. The high speed transmission cable of claim 1 , wherein the second longitudinal end portion of the dielectric film is bonded to the first major surface of the dielectric film.
7. The high speed transmission cable of claim 1 further comprising a jacket that encases the conductor set and the dielectric film.
8. The high speed transmission cable of claim 1 further comprising a shielding layer surrounding the conductor set.