Accession Number:

AD0773184

Title:

Nanosecond Pulse Antenna Narhorn.

Descriptive Note:

Final rept. 15 Dec 1969-1 Jul 1973

Corporate Author:

GENERAL ELECTRIC CO SYRACUSE NY HEAVY MILITARY ELECTRONIC SYSTEMS

Report Date:

1973-10-01

Pagination or Media Count:

138.0

Abstract:

The report discusses the design and fabrication of a folded cone type antenna for the Nanosecond Radar Laboratory of the Rome Air Development Command. The radiofrequency performance was determined by computation and model measurement. Gain is over 39 dB with beamwidths about 1.5 degrees in the E-plane and 1.9 degrees in the H-plane. The first E-plane sidelobes with the government furnished horn input transition may be about -12 dB. With a low mode- conversion transition, the first E-plane sidelobes would be -16 dB or better, and the first H-plane sidelobes -20 dB or better. The shielded nature of the antenna provides distant sidelobes mostly below the isotropic gain level. The mechanical construction is of aluminum sheet on an aluminum support structure. The elevation drive is geared and the azimuth drive is accomplished through wheels in an unusual tripod structure. The antenna presents an aerodynamically unbalanced load. The control system follows binary command signals or manual motion controls.

Subject Categories:

  • Electrical and Electronic Equipment
  • Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE