H03F2201/32 - CPC Classification

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

• H03F2201/3203 » the amplifier comprising means for back off control in order to reduce distortion 17
• H03F2201/3206 » Multiple channels are combined and amplified by only one amplifier 32
• H03F2201/3209 » the amplifier comprising means for compensating memory effects 77
• H03F2201/3212 » Using a control circuit to adjust amplitude and phase of a signal in a signal path 116
• H03F2201/3215 » To increase the output power or efficiency 202
• H03F2201/3218 » the main amplifier or error amplifier being a feedforward amplifier 7
• H03F2201/3221 » 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 10
• H03F2201/3224 » Predistortion being done for compensating memory effects 181
• H03F2201/3227 » Adaptive predistortion based on amplitude, envelope or power level feedback from the output of the main amplifier 97
• H03F2201/3231 » Adaptive predistortion using phase feedback from the output of the main amplifier 20
• H03F2201/3233 » Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion 411
• H03F2201/3236 » A generated signal, e.g. a pulse or an inverted synchronous signal, being added to avoid certain conditions, e.g. clipping 23

Recent Application in this class: