Low inductance transmission cable for low frequencies

In a transmission cable for low frequencies, first and second elongate transmission lines disposed in generally parallel alignment in close proximity to each other, each transmission line having an inner conductor and a coaxial outer conductor and insulating material disposed between the inner conductor and the coaxial outer conductor and a jacket of insulating material covering said coaxial outer conductor, said outer coaxial conductor serving as a shield and means for grounding one end of each of the shields, the inner conductor being formed of a plurality of strands of copper having a purity of 99.97% or better.

In a transmission line, a centrally disposed insulating core member, a plurality of conductor wires arranged side by side and arranged in a circle around the insulating member and an additional insulating coaxial member overlying the circle of conductor wires, an outer coaxial conductive sheath disposed on the additional insulating coaxial member and a jacket of insulating material disposed over the outer coaxial conductive sheath.

In a transmission line, a centrally disposed insulating core member, a plurality of conductor wires arranged side by side and arranged in a circle around the insulating member and an additional insulating core member overlying the wire conductors, an outer coaxial conductive sheath disposed on the additional insulator and a jacket of insulating material disposed over the conductive sheath, said wire conductors being formed of a high purity copper having a purity of 99.97% or better.