Accession Number : AD0774883

Title :   C-Band Cylindrical Array.

Descriptive Note : Final rept. 17 Jul 73-31 Jan 74,

Corporate Author : MARTIN MARIETTA AEROSPACE DENVER COLO DENVER DIV

Personal Author(s) : Bottoms,D. ; Hargis,A. ; Kirchhoff,E. ; Lynes,D.

Report Date : JAN 1974

Pagination or Media Count : 98

Abstract : The report details the design and fabrication of a C-band (6.4-8.9 GHz) cylindrical array with 360 degree azimuth coverage and an elevation beam squinted out of the azimuth plane. The array was designed using computer program calculations to determine such parameters as allowable element spacing, allowable squint angle (without grating lobes) and element positional tolerance. The element phase and amplitude excitation errors which were acceptable were also determined by the computer program. The array arrangement sleected was eight rows of eight elements staggered and stacked in a cylindrical configuration. The element type selected was a 'fat dipole' over a cup reflector which exhibited a 42% bandwidth. The feed network was a series of microcircuit power dividers arranged with one input and 64 outputs which exhibited an octave bandwidth. (Modified author abstract)

Descriptors :   *Phased arrays, C band, Cylindrical bodies, Antenna arrays, Antenna radiation patterns, Power dividers, Antenna feeds

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE