FIELD: radio engineering.
SUBSTANCE: amplifier format distortion feedback (FB) consists of conversion deviation signal forming chain implemented using resistors (2,3) inserted between output and input of inverting amplifier (4), which has conversion slope control input (5). Received conversion deviation signal is multiplied by multiplier (1), whose signal adaptively defines amplifier (4) transfer characteristic slope. Such FB is adaptive non-linear, that is format distortion feedback (FDFB).
EFFECT: decreased format distortion, which occur because of amplifier voltage (current) transfer non-linearity characteristic ambiguity, and defined as product of signal frequency and its amplitude.
1 dwg
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