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

fYear

2007

fDate

20-22 Dec. 2007

Firstpage

421

Lastpage

424

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/EDSSC.2007.4450152

Filename

4450152