Multiple Tube Plasma Antenna
Patent, Filed 29 Sep 1997, patented 5 Oct 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
An antenna is provided in which electromagnetic signals in the High Frequency and Super High Frequency hands are propagated utilizing ionized gas, or plasma. Energized electrodes ionize the gas and the plasma is confined within non-metallic coaxial tubes contained within a non-metallic pressure vessel. Electric field gradients are used to change the shape and density of the plasma to affect the gain and directivity of the antenna. The inner plasma tube acts as the radiating source while the outer plasma tube is used to change the radiation of the inner tube and to reflect the radiated signal. Instrumentation measures the density of the plasma providing a means to measure incoming signals as well as to regulate the radiation frequency.
- Electrical and Electronic Equipment
- Plasma Physics and Magnetohydrodynamics