Coaxial cable and method of making same
AssigneeCommScope Properties, LLC
InventorsALAN N. MOE, BRUCE J. CARLSON, SCOTT M. ADAMS, RONALD VACCARO
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Abstract
A flexible low loss coaxial cable comprises a cylindrical plastic rod, an inner conductor surrounding the plastic rod, a dielectric layer surrounding the inner conductor, and a tubular metallic sheath closely surrounding the dielectric layer. The coaxial cable can further include a protective polymer jacket surrounding the sheath. The cylindrical plastic rod supports the inner conductor in bending and can be formed around a central structural member. The present invention also includes a method of making flexible coaxial cable.
Claims18
A coaxial cable comprising a plastic rod, a longitudinally-applied inner conductor surrounding said plastic rod, a foam polymer dielectric layer surrounding the inner conductor, and a tubular metallic outer sheath closely surrounding the foam polymer dielectric layer.
The coaxial cable of any of the preceding claims wherein said inner conductor is adhesively bonded to the plastic rod.
The coaxial cable of any of the preceding claims further comprising a central structural member within said cylindrical plastic rod such that said central structural member supports said rod.
The coaxial cable of any of the preceding claims wherein said plastic rod is a closed cell foam plastic rod.
The coaxial cable according to any of the preceding claims further comprising a solid dielectric between said foam polymer dielectric layer and said sheath.
A method of making a coaxial cable comprising the steps of:
- advancing a plastic rod along a predetermined path of travel;
- longitudinally applying an inner conductor onto the plastic rod encircling the plastic rod;
- extruding a foamable polymer composition onto the inner conductor to form a cable core;
- and
- forming a tubular metallic outer sheath onto the cable core and encircling the cable core.
Dependencies are inferred from the claim text.