Flexible differential interconnect cable with isolated high frequency electrical transmission line

An electrical interconnect cable comprising:

• a flexible dielectric layer;
• a flexible conductive layer on the flexible dielectric layer, the flexible conductive layer comprising a number of conductive traces of a high-frequency electrical transmission line structure;
• at least two of the conductive traces forming a complementary signal pair of conductive traces;
• the electrical interconnect cable including opposed terminating ends;
• each conductive trace including at least one conductive pad near a terminating end;
• the number of conductive traces including at least three ground conductive traces, first and second ones of said at least three ground conductive traces sandwiching a first signal trace forming the complementary pair of conductive traces, the second and a third ones of said at least three ground conductive traces sandwiching a second signal trace forming the complementary pair of conductive traces;
• and,
• a flexible conductive ground layer positioned such that the flexible dielectric layer is sandwiched between the flexible conductive layer and the flexible conductive ground layer.