Accession Number : AD0780047

Title :   ARSR-2 Radar Dual Feedhorn Antenna Modification.

Descriptive Note : Final rept. Jun 69-Aug 72,

Corporate Author : RAYTHEON CO WAYLAND MASS EQUIPMENT DIV

Personal Author(s) : Rawlinson,P. E.

Report Date : DEC 1973

Pagination or Media Count : 122

Abstract : The intent of these efforts was to determine the feasibility of a dual feedhorn configuration employed with the ARSR-2 antenna reflector. The feedhorn geometry was modified by adding a separate receive only feedhorn and polarizer to produce separate antenna two-way coverage patterns for the close-in and long-range capabilities of the radar system. The close-in coverage was obtained by transmission on the normal (low) beam and reception on the second (high or tilted-up) beam. The long range coverage was obtained by both transmission and reception on the normal beam. The effort was divided into three parts: (1) analysis of the problems associated with placing a second feedhorn in the focal region of the reflector and with generating good circular polarization characteristics for both beam patterns; (2) design and fabrication of the necessary antenna feed network hardware; and (3) performance of experimental measurements. (Modified author abstract)

Descriptors :   *Radar antennas, Horn antennas, Antenna feeds, Modification, Search radar, Radar clutter, Air traffic control systems, Antenna radiation patterns

Subject Categories : Electrical and Electronic Equipment
      Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE