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Proceedings Paper

Pulsed power management and design philosophy in the T-1028A/FPS-85 radar transmitter
Author(s): Montgomery D. Grimes; J. Mark Major; Thomas J. Warnagiris
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Paper Abstract

The T-1028A/FPS-85 transmitter is part of the AN/FPS-85 phased-array radar system located at Eglin Air Force Base, Florida. The radar features an electronically steerable beam at a peak radiated power of about 32 MW generated by a 72 X 72 matrix of separate T- 1028A/FPS-85 transmitter elements that are individually rated for a maximum peak power output of 10 kW. The output stage RF amplifier is a cavity design that uses the YU-176 planar triode tube. The signals to modulate the tube cathode are developed within the transmitter. This departs from the original transmitter design philosophy in which all 5184 transmitter units were modulated by single-signal sources that originated from centralized equipment locations and were then fed to the transmitter elements by an extensive network of cables and feed boxes. Recent improvements in technology have made small and inexpensive switching components available which allow for individual pulsed power and modulator circuits. The proposed retrofit of the radar site with the redesigned transmitters will result in the obsolescence of the existing modulator equipment.

Paper Details

Date Published: 1 June 1994
PDF: 5 pages
Proc. SPIE 2119, Intense Beams and Applications: Lasers, Ions, and Microwaves, (1 June 1994); doi: 10.1117/12.172710
Show Author Affiliations
Montgomery D. Grimes, Southwest Research Institute (United States)
J. Mark Major, Southwest Research Institute (United States)
Thomas J. Warnagiris, Southwest Research Institute (United States)

Published in SPIE Proceedings Vol. 2119:
Intense Beams and Applications: Lasers, Ions, and Microwaves
William E. McDermott, Editor(s)

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