Patent ID: 9607734
Date: 2017-03-28
CPC Classifications: H01B

Claim:
1. An electrical ribbon cable, comprising: a conductor set comprising two elongated conductors extending from end-to-end of the cable, wherein the conductors are encompassed along a length of the cable by respective first dielectrics; first and second flexible shielding films extending from end-to-end of the cable and disposed on opposite sides of the cable, a consistent spacing maintained between the first dielectrics of the conductors of the conductor set along the length of the cable, in transverse cross-section, the first and second shielding films forming cover portions of the shielding films substantially surrounding the conductor set and pinched regions of the shielding films on each side of the conductor set; a second dielectric disposed between the first and second shielding films and extending between closest points of proximity between the first dielectrics of the conductors of the conductor set, a dielectric constant of the first dielectrics being different than a dielectric constant of the second dielectric, wherein a minimum separation between the cover portions of the first and second shielding films between the conductors is greater than a minimum separation between the pinched regions of the shielding films on each side of the conductor set; and a transition portion defined by the first and second shielding films and the conductor set and providing a gradual transition between the cover portions and the pinched regions of the first and second shielding films, wherein a ratio of a minimum radius of curvature of the first shielding film in the cover portion of the first shielding film to a minimum radius of curvature of the first shielding film in the transition portion of the first shielding film is in a range from 2 to 15.