Patent ID: 8203495

Claim:
A buoyant cable antenna system for use by a submerged submarine, comprising: a coaxial line segment comprising a center conductor and a braided outer conductor, said coaxial line segment having an inboard end closest to said submarine and an outboard end furthest from said submarine; an HF antenna electrically connected to said outboard end of said coaxial line segment; and a filter connected to an inboard end of said coaxial line segment, said filter comprising a first capacitor connected between ground and said braided outer conductor, whereby VLF/LF signals are induced on said braided outer conductor such that said braided outer conductor acts as a VLF/LF antenna, said filter comprising a second capacitor connected to said center conductor of said coaxial line segment, said filter comprising an inductor connected between said first capacitor and said braided outer conductor, whereby said second capacitor directs an HF signal from said HF antenna to said submarine, and said inductor directs a VLF/LF signal from said VLF/LF antenna to said submarine.