FIELD: radio engineering, communication.
SUBSTANCE: method for linearisation of characteristics of a microwave amplifier using a signal at envelope curve signals to suppress nonlinear distortions consists in that, in a microwave amplifier based on a travelling-wave tube or a klystron, a low-frequency correction signal of the envelope curve from the output of a modulator or the output of a detector is fed to the focusing electrode or the first anode of the travelling-wave tube or a klystron, and in a transistor microwave amplifier, a low-frequency correction signal of the envelope curve from the output of a modulator or the output of a detector is fed to the input of the transistor through circuits which determine the operating point. Amplifier characteristics consistently vary under the action of the signal, which is the envelope curve of the modulated microwave signal at the input of the amplifier.
EFFECT: high linearity of amplifier characteristics while maintaining efficiency, output power and the operating frequency band.
3 cl, 4 dwg
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