Accession Number : ADA315239

Title :   High Power Digital Direction Finding Antennas.

Descriptive Note : Rept. for 1 Jan 95-1 Jul 96,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEE RING

Personal Author(s) : Pace, Philip E.

PDF Url : ADA315239

Report Date : AUG 1996

Pagination or Media Count : 35

Abstract : A novel high power digital direction finding antenna architecture is presented. Direct digitization of the antenna signal is accomplished using a symmetrical number system electrooptical wideband analog to digital converter. By directly digitizing the antenna signals, the need for down conversion and automatic gain control circuitry can be eliminated. The design of a 5-bit prototype that uses three integrated optical interferometers is discussed and its experimental DC performance (transfer function) is evaluated. The hardware realization of a three channel 14-bit device currently being constructed in the Optical Electronics Laboratory is also discussed.

Descriptors :   *HIGH POWER, *DIRECTION FINDING, *ANALOG TO DIGITAL CONVERTERS, *DIRECTIONAL, OPTICAL PROPERTIES, INTEGRATED SYSTEMS, TRANSFER FUNCTIONS, ELECTROOPTICS, HIGH RESOLUTION, OPTICAL INTERFEROMETERS, SIGNALS, ANTENNAS, CIRCUITS, DIRECT CURRENT, AUTOMATIC GAIN CONTROL, DOWN CONVERTERS.

Subject Categories : Electrical and Electronic Equipment
      Direction Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE