Title :
A 5.25-GHz CMOS cascode class-AB power amplifier for 802.11a WLAN
Author :
Tu, Steve Hung-Lung ; Chen, Sky Chang-Hung
Author_Institution :
Dept. of Electron. Eng., Fu Jen Catholic Univ., Taipei
Abstract :
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 20 dBm output power, and an 18.8-dBm output 1-dB compression point. All the specifications are based on 50-Omega input impedance at 2.4 V supply voltage.
Keywords :
CMOS integrated circuits; power amplifiers; wireless LAN; CMOS cascode class-AB power amplifier; IEEE 802.11a WLAN; frequency 5.25 GHz; off-chip output matching circuit; resistance 50 ohm; transistor-level compensation; voltage 2.4 V; CMOS process; Circuits; Degradation; Diodes; Hot carriers; Linearity; MOSFETs; Parasitic capacitance; Power amplifiers; Wireless LAN;
Conference_Titel :
Microelectronics, 2007. ICM 2007. Internatonal Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4244-1846-6
Electronic_ISBN :
978-1-4244-1847-3
DOI :
10.1109/ICM.2007.4497651
