A cable (210) includes a center conductor (220). An insulating material in the form of a layer (225) surrounds the center conductor. A sparse shield (232) partially surrounds the insulating material. The sparse shield may include a plurality of conductors, which are grouped adjacent to one another within a space around the insulating layer that has a length that is less than 25% of the total circumference of the insulating layer. An insulating jacket (227) covers the sparse shield and the remainder of the cable. The cable may be used in a cable assembly (10).