Spar transmitter
AssigneeHRL Laboratories, LLC
InventorsChristopher P. Henry, Walter S. Wall, Carson R. White
Life of this patent
Estimating the term…
Abstract
A spar buoy for very low frequency (VLF) or low frequency (LF) transmission including a first portion of the spar buoy extending above a mean water line including a conductive structure including a coaxial feed, and an antenna coupled to the coaxial feed and extending above the conductive structure, and a second portion of the spar buoy below the mean water line including a transmitter coupled to the coaxial feed, an energy storage subsystem coupled to the transmitter and an electric power generation subsystem coupled to the energy storage subsystem.
Claims9
A spar buoy for very low frequency (VLF) or low frequency (LF) transmission comprising:
- a first portion of the spar buoy extending above a mean water line comprising:
- a conductive structure comprising a coaxial feed;
- and
- an antenna coupled to the coaxial feed and extending above the conductive structure;
- and
- a second portion of the spar buoy below the mean water line comprising:
- a transmitter coupled to the coaxial feed;
- an energy storage subsystem coupled to the transmitter;
- and
- an electric power generation subsystem coupled to the energy storage subsystem;
- wherein the antenna comprises a lofted antenna having a length up to 10,000 meters.
A system for very low frequency (VLF) or low frequency (LF) transmission comprises:
- a spar buoy;
- an air vehicle;
- a first portion of the spar buoy extending above a mean water line comprising:
- a conductive structure comprising a coaxial feed;
- and
- a conductive cable coupled to the coaxial feed and coupled to the air vehicle;
- and
- a second portion of the spar buoy below the mean water line comprising:
- a transmitter coupled to the coaxial feed;
- an energy storage subsystem coupled to the transmitter;
- and
- an electric power generation subsystem coupled to the energy storage subsystem.
Dependencies are inferred from the claim text.