Bias Switching Amplifier Design and Linearization

Bias Switching Amplifier Design and Linearization

This paper presents the design and linearization of high efficiency dual mode amplifier. A dual mode transmitter requires an amplifier which generates different output level for different applications. For WiBro, the output is 1 W at 2.3 GHz, and for wireless LAN, the output is less than 100 mW at 2...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Young Min Lee, Hyun Jin Jeon, Kyung Heon Koo
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Baseband
Dual band
Envelope detectors
Linearity
Power amplifiers
Predistortion
Radio frequency
Radiofrequency amplifiers
Transmitters
Wireless LAN
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Beschreibung
Zusammenfassung:This paper presents the design and linearization of high efficiency dual mode amplifier. A dual mode transmitter requires an amplifier which generates different output level for different applications. For WiBro, the output is 1 W at 2.3 GHz, and for wireless LAN, the output is less than 100 mW at 2.4 GHz, A bias switching amplifier is designed to get the higher efficiency at both applications With bias switching the amplifier shows the efficiency improvement of up to 25% point. This paper also shows the possibility of linearity improvement for the dual mode amplifier by using predistortion technique.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2007.4554721