Accession Number:

AD0745577

Title:

1.8:1 Bandwidth UHF 3 X 3 Array of Crossed Open-Sleeve Dipoles

Descriptive Note:

Rept. for Jul-Nov 1971

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA SYSTEMS ENGINEERING OPERATIONS

Personal Author(s):

Report Date:

1972-06-01

Pagination or Media Count:

54.0

Abstract:

A circularly polarized nine-element 3 x 3 planar array antenna system has been evaluated for use on a synchronous satellite. The array elements are mounted on a 104-in. square reflector, and the basic radiating element is a crossed open-sleeve dipole with good VSWR and pattern characteristics over a 1.81 frequency band 225 to 400 MHz. The electrical performance of the antenna was measured using a half-scale model. It is shown that the antenna can provide an EOE gain gain in the direction of the edge-of- the-earth of greater than 14 dB from 225 to 250 MHz and greater than 11 dB from 250 to 400 MHz, based on the results of the half-scale model measurements. The measured axial ratio is less than 1.6 dB throughout the entire operating frequency band.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE