Abstract: A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor may include a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable, and may define a plurality of apertures to enable generation of radiating waves during signal excitation of the cable.

Abstract: A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor includes a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable. The cable may include an insulating jacket generally surrounding the tape outer conductor.

Abstract: A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor includes a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable. The cable may include an insulating jacket generally surrounding the tape outer conductor.

Abstract: A flexible coaxial cable includes an inner conductor, and a dielectric layer generally surrounding the inner conductor. A tape outer conductor generally surrounds the dielectric layer, and does not underlie another electrically conductive layer such as a braided wire layer. The tape outer conductor may include a surface defining a plurality of indentations for minimizing damage to the tape outer conductor resulting from repeated flexing of the cable, and may define a plurality of apertures to enable generation of radiating waves during signal excitation of the cable.

Abstract: A fluid detection system includes a cable which is capable of being dried easily after coming into contact with the fluid being detected and displays a measurable change in characteristic impedance immediately upon contact with the fluid. The cable comprises an inner conductor and a cylindrical outer conductor disposed in a substantially parallel and coaxial relationship with each other with a dielectric detection layer coaxially disposed between the inner and outer conductors. The outer conductor is of an open braided construction which permits easy passage therethrough of the fluid to be detected. The detection layer comprises a pair of solid dielectric elements stranded around the inner conductor in a double helical configuration and defining an air gap between the two conductors which is adapted to retain the fluid so as to measurably change the characteristic impedance of the cable.

Abstract: An improved foamable dielectric composition comprising a melt extrudable perfluorocarbon resin containing therein (i) a polytetrafluoroethylene (PTFE) nucleating agent and (ii) a volatile blowing agent, preferably a lower fluorocarbon blowing agent having only one or two carbon atoms; a process for forming such a composition; and, products produced therewith. More specifically, a foamed melt extudable fluorinated ethylene-propylene (FEP) polymer containing therein a PTFE nucleating agent and blown to a foamed structure by means of a volatile fluid--e.g., a lower fluorocarbon such as fluoromethane or, preferably, fluoroethane, a process for forming such a foamed composition; and, products produced therewith such as jacketed electrical conductors and/or coaxial cables wherein at least one conductor is bonded to such a foamed melt extrudable resin.

Abstract: An improved foamable dielectric composition comprising a melt extrudable perfluorocarbon resin containing therein (i) a polytetrafluoroethylene (PTFE) nucleating agent and (ii) a volatile blowing agent, preferably a lower fluorocarbon blowing agent having only one or two carbon atoms; a process for forming such a composition; and, products produced therewith. More specifically, a foamed melt extrudable fluorinated ethylene-propylene (FEP) polymer containing therein a PTFE nucleating agent and blown to a foamed structure by means of a volatile fluid--e.g., a lower fluorocarbon such as fluoromethane or, preferably, fluoroethane, a process for forming such a foamed compostion; and, products produced therewith such as jacketed electrical conductors and/or coaxial cables wherein at least one conductor is bonded to such a foamed melt extrudable resin.