David L Guerrino

US Patent:

39654745, Jun 22, 1976

Filed:

Sep 26, 1975

Appl. No.:

5/617229

Inventors:

David L. Guerrino - Woodbridge VA
Richard W. Cole - Waldorf MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01Q 104

US Classification:

343719

Abstract:

An improved device and technique for improving the reception of very low quency and low frequency transmissions in seawater. A loop antenna, wound on a ferrite core, is encapsulated in a water impermeable housing. Non-conducting elements are attached to the housing and extend outwardly therefrom to serve as barriers to conduction currents in the seawater. By varying the dimensions and number of the non-conducting members, the quality factor of the loop antenna can be increased to provide improved reception of VLF/LF signals.