Accession Number : AD0164942
Title : Circular Array with Butler Submatrices.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Sheleg,Boris
Report Date : 01 MAY 1973
Pagination or Media Count : 5
Abstract : The patent describes several small Butler matrices interconnected in a manner to replace a large Butler matrix employed in a beam forming and scanning network for a circular antenna array. This system of Butler submatrices (a set of low order Butler matrices simulating a single higher order Butler matrix) permits a reduction in the size of an existing feed system without any sacrifice in the 360 degrees beam steering capability. Also this system produces only a minimal loss in beamwidth. A major difference between this system and the systems of the prior art is the number of modes available.
Descriptors : *Antenna arrays, *Patents, Circular antennas, Antenna feeds, Electronic scanners, Matrices(Circuits)
Subject Categories : Electrical and Electronic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE