UNDERWATER RADIO FREQUENCY ANTENNA

摘要

The present invention relates to an underwater radio frequency antenna able to radiate in an underwater or equivalent propagation medium. It comprises—a hollow conducting tube (1) forming a resonant cavity, said conducting tube having an open end and a closed end,—means of excitation (2) of said resonant cavity which are able to be fed with signals and are arranged in such a way that the resonant cavity emits an electromagnetic radiation through said open end,—at least one layer (4) of di-electric material filling at least partially said resonant cavity so as to close the open end of the resonant cavity and render said cavity leaktight in relation to the underwater medium, said layer being able to resist the pressure in the underwater medium and to allow said electromagnetic radiation to pass through.

主权项

1. Underwater radio frequency antenna adapted to radiate in an underwater propagation medium, characterised in that it comprises
a hollow conducting tube forming a resonant cavity, said conducting tube having an open end and a closed end, means for the excitation of said resonant cavity suitable for being fed with signals and arranged in such a way that the resonant cavity emits an electromagnetic radiation through said open end, at least one layer of dielectric material filling at least partially said resonant cavity so as to close the open end of the resonant cavity and render said cavity leaktight in relation to the underwater medium, said layer being suitable for resisting the pressure of the underwater medium and allowing said electromagnetic radiation to pass through.