Pulsed power management and design philosophy in the T-1028A/FPS-85 radar transmitter

Montgomery D. Grimes; J. Mark Major; Thomas J. Warnagiris

doi:10.1117/12.172710

1 June 1994 Pulsed power management and design philosophy in the T-1028A/FPS-85 radar transmitter

Montgomery D. Grimes, J. Mark Major, Thomas J. Warnagiris

Proceedings Volume 2119, Intense Beams and Applications: Lasers, Ions, and Microwaves; (1994) https://doi.org/10.1117/12.172710
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

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.

Citation Download Citation

Montgomery D. Grimes, J. Mark Major, and Thomas J. Warnagiris "Pulsed power management and design philosophy in the T-1028A/FPS-85 radar transmitter", Proc. SPIE 2119, Intense Beams and Applications: Lasers, Ions, and Microwaves, (1 June 1994); https://doi.org/10.1117/12.172710

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