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Proceedings Paper

T-1028A/FPS-85 radar transmitter design
Author(s): Montgomery D. Grimes; J. Mark Major; Thomas J. Warnagiris
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Paper Abstract

The AN/FPS-85 radar is a large, fixed-position, phased-array radar located at Eglin Air Force Base, Florida. The radar has a peak radiated power of about 32 MW generated by a 72 X 72 matrix of separate transmitter elements that are individually rated for a maximum peak power output of 10 kW. All current amplifier and mixer functions on the existing transmitters are performed by tube devices. Southwest Research Institute is currently under contract by the U.S. Air Force to redesign the transmitter units and supply three operational prototypes. The design goals of the program are to extend the performance envelope by increasing pulse width and duty cycle capabilities, and to increase the reliability of the transmitter by using solid-state components where practical. The transmitter prototype redesign is in an advanced state and has involved the design of pulsed-power modulator circuits, energy storage networks, and custom solid-state and tube cavity amplifiers. An industry search for suitable manufacturers of custom RF amplifier modules has resulted in the conclusion that an all-solid-state design is technically viable; however, the expense of the all-solid-state approach has made a combined solid-state/tube design economically attractive.

Paper Details

Date Published: 1 June 1994
PDF: 7 pages
Proc. SPIE 2119, Intense Beams and Applications: Lasers, Ions, and Microwaves, (1 June 1994); doi: 10.1117/12.172711
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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