Accession Number : ADD018087

Title :   Minimal Washover, Inline High Frequency Buoyant Antenna.

Descriptive Note : Patent, filed 30 Dec 94, Patented 14 May 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Patel, Jayant S ; Kasper, Rolf G ; Wagneer, Craig A ; Kalinowski, Anthony J

Report Date : May 1996

Pagination or Media Count : 6

Abstract : A buoyant antenna for providing sufficient transmission time windows for communication at ultrahigh and extremely high frequencies. The antenna is configured to float on the surface of a body of water and is connected to a vessel through a communications cable. The buoyant antenna has a length and a stabile or rotation resistant cross-section which minimizes wash over when deployed in a manner which essentially eliminates in line tension on the antenna. The antenna is cylindrically shaped with sensor elements I offset from the centerline. A high density mass is placed diametrically opposite the sensor elements and a high buoyancy foam fills out the remaining cylindrical shape. The high density mass creates a righting moment to maintain the sensor elements above the water line. The absence of in line tension during communication periods serves also to eliminate any detectable wake during those communication periods. The lack of detectability makes the antenna and its deployment method particularly well suited for use when the vessel is a submarine.

Descriptors :   *HIGH FREQUENCY, *COMMUNICATION EQUIPMENT, *ANTENNAS, *BUOYANCY, *PATENTS, DEPLOYMENT, DETECTORS, WATER, MASS, RESISTANCE, SHAPE, TRANSMISSION LINES, TIME, TRANSMITTANCE, CYLINDRICAL BODIES, CROSS SECTIONS, TENSION, HIGH DENSITY, WINDOWS, WAKE, COMMUNICATION AND RADIO SYSTEMS, ROTATION, EXTREMELY HIGH FREQUENCY, UNDERWATER COMMUNICATIONS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE