Patent ID: 7868833

Claim:
A buoyant cable antenna for use with an underwater vehicle comprising: a plurality of N segments of straight wire of uniform diameter, each segment being of equal length d/2, wherein the number of segments, N, is dictated by the frequency band of operation of said buoyant cable antenna; a plurality of capacitors coupled in series between every other segment of the plurality of N segments of straight wire such that each of said plurality of capacitors is separated by a distance d; a plurality of shunt inductors coupled to the adjoining segments of the plurality of N segments of straight wire that are not separated by a capacitor such that the each of said plurality of shunt inductors is separated by a distance d; a cylindrical layer of buoyant dielectric material surrounding said plurality of N segments of straight wire, capacitors and shunt inductors wherein said cylindrical sheath of dielectric material serves to insulate said N segments of straight wire; a cylindrical jacket of a non-conducting water proof material disposed over said cylindrical layer of buoyant dielectric material that serves to shield the N segments of straight wire from water; a coaxial feed line having a first end and a second end, said first end being joined to said underwater vehicle and said second end joined to a first end of one of said plurality of N segments of straight insulated wire, wherein said coaxial feed line serves as a transmission line; and a terminating cap joined to a second end of said straight insulated wire.