Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion

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Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00 > Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion

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H03F 2201/3203 the amplifier comprising means for back off control in order to reduce distortion
H03F 2201/3206 Multiple channels are combined and amplified by only one amplifier
H03F 2201/3209 the amplifier comprising means for compensating memory effects
H03F 2201/3212 Using a control circuit to adjust amplitude and phase of a signal in a signal path
H03F 2201/3215 To increase the output power or efficiency
H03F 2201/3218 the main amplifier or error amplifier being a feedforward amplifier
H03F 2201/3221 Predistortion by overamplifying in a feedforward stage the distortion signal to have a combined main signal and "negative" distortion to form the predistorted signal for a further stage. so that after amplification in the further stage only the amplified main signal remains
H03F 2201/3224 Predistortion being done for compensating memory effects
H03F 2201/3227 Adaptive predistortion based on amplitude, envelope or power level feedback from the output of the main amplifier
H03F 2201/3231 Adaptive predistortion using phase feedback from the output of the main amplifier
H03F 2201/3233 Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
H03F 2201/3236 A generated signal, e.g. a pulse or an inverted synchronous signal, being added to avoid certain conditions, e.g. clipping