LINEAR MICROWAVE AMPLIFIER Russian patent published in 2012 - IPC H03F1/32 

FIELD: information technology.

SUBSTANCE: invention relates to computer engineering. The linear microwave amplifier is in form of a double-loop automatic control system and has two controlled attenuators, a power amplifier, two power dividers, a low-pass filter 6, two amplitude detectors, an adder, two reference voltage sources, two high-pass filters, two comparator links and a peak detector. The first loop of the automatic control system provides a low level of nonlinear distortions of the output signal, and the second loop of the automatic control system, due to use of the peak detector, maintains high accuracy of operation of the first loop of the automatic control system in a wide range of variation of the gain of the power amplifier and amplitude of the input signal. Integrating properties of the peak detector enable to ensure small nonlinear distortions during amplification of radio signals with different types of phase and amplitude modulation and shift keying.

EFFECT: reduced nonlinear distortions in a wide range of variation of gain of a power amplifier and amplitude of an input high-frequency signal.

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