A 2.4 GHz Fully Integrated Linear CMOS Power Amplifier With Discrete Power Control

Author

An, Kyu Hwan ; Lee, Dong Ho ; Lee, Ockgoo ; Kim, Hyungwook ; Han, Jeonghu ; Kim, Woonyun ; Lee, Chang-Ho ; Kim, Haksun ; Laskar, Joy

Author_Institution

Georgia Electron. Design Center, Georgia Inst. of Technol., Atlanta, GA, USA

Volume

19

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

479

Lastpage

481

Abstract

A fully integrated 2.4 GHz CMOS power amplifier (PA) in a standard 0.18 mum CMOS process is presented. Using a parallel-combining transformer (PCT) and gate bias adaptation, a discrete power control of the PA is achieved for enhancing the efficiency at power back-off. With a 3.3 V power supply, the PA has a peak drain efficiency of 33% at 31 dBm peak output power. By applying discrete power control, a reduction of 650 mA in current consumption can be achieved over the low output power range while satisfying the EVM requirements of WLAN 802.11g and WiMAX 802.16e signals.

Keywords

CMOS analogue integrated circuits; UHF power amplifiers; WiMax; low-power electronics; power control; power transformers; wireless LAN; WLAN; WiMAX; current 650 mA; discrete power control; efficiency 33 percent; frequency 2.4 GHz; fully-integrated linear CMOS power amplifier; gate bias adaptation; low-output power; parallel-combining transformer; power back-off; size 0.18 mum; voltage 3.3 V; Bias control; CMOS; discrete power control; power amplifier; power combining; transformer;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2009.2022141

Filename

5109474