Title :
A 5.25-GHz CMOS Cascode Class-AB Power Amplifier for Wireless Communication
Author :
Tu, S.H.-L. ; Chen, S.C.-H.
Author_Institution :
Fu Jen Catholic Univ., Taipei
Abstract :
A 5.25-GHz highly integrated CMOS class-AB power amplifier for IEEE 802.11a WLAN is investigated in this paper. 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; cascade networks; compensation; microwave power amplifiers; wireless LAN; CMOS cascode class-AB power amplifier; IEEE 802.11a WLAN; frequency 5.25 GHz; off-chip output matching circuit; transistor-level compensation; two gain-stage structure; voltage 2.4 V; wireless communication; High power amplifiers; Impedance matching; Integrated circuit measurements; Linearity; Power amplifiers; Power generation; Power measurement; Voltage; Wireless LAN; Wireless communication;
Conference_Titel :
Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on
Conference_Location :
Tainan
Print_ISBN :
978-1-4244-0637-1
Electronic_ISBN :
978-1-4244-0637-1
DOI :
10.1109/EDSSC.2007.4450152
