Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Patent
1995-04-28
1998-08-11
Mullins, James B.
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
330 51, 330124D, 330149, 330295, H03F 368
Patent
active
057932530
ABSTRACT:
A power amplifier includes a plurality of signal amplifying stages. An amplitude compensator positioned prior to the ultimate signal amplifying stage equalizes the signal amplitudes in the frequency band of interest to provide a substantially flat frequency response. Fail-soft operation is established by providing switchably redundant amplifiers. When an operating amplifier is detected as failing, automatic switching is performed to replace the failing unit with an identical unit to maintain amplifier operation. High-power amplification is accomplished by splitting a preamplified signal into a plurality of signals, amplifying the lower level signals so obtained, and then recombining the amplified signals.
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Skolnik, "Radar Handbook 2nd, Edition", Chapter 5, McGraw-Hill Book Company, New York, 1990.
Rivera, "An S-Band Solid-State Transmitter for Airport Surveillance Radars", Record of the IEEE National Radar Conference, 1993.
Hanczor Michael
Kumar Mahesh
Levine Seymour
Mullins James B.
Starr Mark T.
Unisys Corporation
Weinstein Stanton D.
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