TREA

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

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  • CPC
  • H03F2201/00
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Parent Industries

HELECTRICITY H03Electronic circuits H03FAMPLIFIERS

Current Industry

H03F2201/00Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00

Sub Industries

H03F2201/32Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion H03F2201/3203the amplifier comprising means for back off control in order to reduce distortion H03F2201/3206Multiple channels are combined and amplified by only one amplifier H03F2201/3209the amplifier comprising means for compensating memory effects H03F2201/3212Using a control circuit to adjust amplitude and phase of a signal in a signal path H03F2201/3215To increase the output power or efficiency H03F2201/3218the main amplifier or error amplifier being a feedforward amplifier H03F2201/3221Predistortion 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 H03F2201/3224Predistortion being done for compensating memory effects H03F2201/3227Adaptive predistortion based on amplitude, envelope or power level feedback from the output of the main amplifier H03F2201/3231Adaptive predistortion using phase feedback from the output of the main amplifier H03F2201/3233Adaptive predistortion using lookup table H03F2201/3236A generated signal
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