High power solid state microwave transmitter

Amplifiers – With plural amplifier channels – Redundant amplifier circuits

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Details

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.

REFERENCES:
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patent: 5119042 (1992-06-01), Crampton et al.
patent: 5218322 (1993-06-01), Allison et al.
patent: 5287543 (1994-02-01), Wolkstein
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.

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