Accession Number : ADD006301

Title :   Radar Antenna.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Rittenback,Otto E

Report Date : 26 Dec 1978

Pagination or Media Count : 12

Abstract : An antenna for range-gated, pulse doppler, radar systems. The antenna includes first and second, shortened, half-wave dipoles and first and second reflecting screens. One dipole is fed through a fixed 22 1/2 degree phase-shift network while the other is fed through a 45 degree phase-shift network that can selectively be switched in and out of the feed circuit. A counter which uses a shift register with linear feedback which is connected to generate a maximal length pseudo-random sequence. When a given state in the sequence is sensed, certain shifts are inhibited, and the register is returned to the all-one state. (Author)

Descriptors :   *Patent applications, *Radar antennas, Doppler radar, Very high frequency

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE