A 5.25-GHz CMOS Cascode Class-AB Power Amplifier for 802.11a WLAN

A 5.25-GHz CMOS Cascode Class-AB Power Amplifier for 802.11a WLAN

In this paper, we investigate a 5.25-GHz highly integrated CMOS class-AB power amplifier for IEEE 802.11a WLAN. The proposed power amplifier is implemented with a two gain-stage structure which is followed by an off-chip output matching circuit. Moreover, a transistor-level compensation technique is...

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Bibliographische Detailangaben
Hauptverfasser: Tu, S.H.-L., Sky Chang-Hung Chen
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Circuits
CMOS process
Degradation
Diodes
Hot carriers
Linearity
MOSFETs
Parasitic capacitance
Power amplifiers
Wireless LAN
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Beschreibung
Zusammenfassung:In this paper, we investigate a 5.25-GHz highly integrated CMOS class-AB power amplifier for IEEE 802.11a WLAN. The proposed power amplifier is implemented with a two gain-stage structure which is followed by an off-chip output matching circuit. Moreover, a transistor-level compensation technique is employed to improve the linearity. The measured results indicate an over 20% power-added efficiency, an over 20dBm output power, and an 18.8-dBm output 1-dB compression point. All the specifications are based on 50-Ω input impedance at 2.4V supply voltage.
ISSN:2159-1660
DOI:10.1109/ICM.2007.4497651