Shielded electrical signal cable

摘要

Aspects of the present invention provide shielded cables for reducing the incidence of ground loops between connected electronic devices. According to one aspect of the present invention, a shielded cable is disclosed having two inner shield segments and an outer shield. The inner shield segments can each be grounded, but are physically separated from each other by a gap. The external shield is not grounded, and serves to contain EMI generated by signal conductors within the shielded cable and shield the signal conductors against external electrical events.

主权项

1. A shielded cable comprising:
a signal conductor having a length; a first shield segment disposed coaxially around the signal conductor, the first shield segment for shielding the signal conductor, one end of the first shield segment connecting to a ground potential of a first electronic device; a second shield segment disposed coaxially around the signal conductor, the second shield segment being separated from the first shield segment by a gap interposed between the first shield segment and the second shield segment, the second shield segment for shielding the signal conductor, one end of the second shield segment connecting to a ground potential of a second electronic device; and an outer shield continuously disposed along a length between the one end of the first shield segment and the one end of the second shield segment, and coaxially around the first shield segment, the second shield segment, and the gap, the outer shield being separated from the first shield segment and the second shield segment by a dielectric material.