Linear power amplifying device and method

An arrangement for linearizing an amplifier by a combination of two methods is described. In the first a predistorter 213 supplies harmonics to the main amplifier 214 in such a way as to counteract the distortion. In the second a feedforward arrangement subtracts in 219 a signal derived from the inp...

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Bibliographische Detailangaben
Hauptverfasser: CHUL-DONG KIM, JONG-TAE PARK, YOUNG KIM, SOONUL JEONG, SEUNG-WON CHUNG, YOUNG-KON LEE, HONG-KEE KIM, SEONG-HOON LEE, IK-SOO CHANG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An arrangement for linearizing an amplifier by a combination of two methods is described. In the first a predistorter 213 supplies harmonics to the main amplifier 214 in such a way as to counteract the distortion. In the second a feedforward arrangement subtracts in 219 a signal derived from the input of the main amplifier from a signal derived from the output to produce a distortion signal which is then subtracted from the main amplifier output to remove remaining distortion. The arrangement may be used in multi-carrier amplification.