POWER AMPLIFIER WITH LINEARIZATION

An amplifier, communication device and method of amplification are disclosed. An RF signal is amplified by a Doherty power amplifier (DPA). The DPA has a main amplifier with a Class-AB amplifier in parallel with a Class-C amplifier. When the RF signal power is smaller than 6 dB PBO, the Class-AB amp...

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Bibliographische Detailangaben
Hauptverfasser: CHANG, LiChung Tony, PELLERANO, Stefano, PARK, JongSeok, YU, Chuanzhao
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:An amplifier, communication device and method of amplification are disclosed. An RF signal is amplified by a Doherty power amplifier (DPA). The DPA has a main amplifier with a Class-AB amplifier in parallel with a Class-C amplifier. When the RF signal power is smaller than 6 dB PBO, the Class-AB amplifier provides the main amplifier amplification; when the RF signal is between 6 dB PBO and 0 dB PBO, both the Class-AB and Class-C amplifiers provide the main amplifier amplification.