A wideband linear CMOS power amplifier design for 2.3-GHz and 2.6-GHz m-WiMAX system

Author

Jin, Boshi ; Moon, Junghwan ; Kim, Bumman

Author_Institution

Electr. Eng. Dept., Pohang Univ. of Sci. & Technol., Pohang, South Korea

fYear

2010

fDate

8-11 May 2010

Firstpage

211

Lastpage

216

Abstract

In this work, a fully-integrated linear CMOS power amplifier (PA) is implemented in a 0.18-μm 1P6M RF CMOS process for 2.3-GHz and 2.6-GHz m-WiMAX system application. A wideband twisted figure-8-shaped transformer is utilized as both the power combining and matching, which is operated across 1 GHz bandwidth. The PA operates at Class AB mode and can deliver 29.1 dBm with a 26.5% PAE at 1-dB compression point and offer 22 dB gain. EVM is lower than 5% at 19 dBm average power under the 16 QAM m-WiMAX modulation signal test. Digital feedback pre-distortion (DFDPD) technique is employed to improve spectrum linearity by 7 dB at 19 dBm average power level.

Keywords

CMOS integrated circuits; WiMax; power amplifiers; 16 QAM m-WiMAX modulation signal test; 1P6M RF CMOS process; bandwidth 2.3 GHz; bandwidth 2.6 GHz; digital feedback predistortion; fully-integrated linear CMOS power amplifier; m-WiMAX system; power combining; power matching; wideband linear CMOS power amplifier design; wideband twisted figure-8-shaped transformer; Bandwidth; Broadband amplifiers; CMOS process; Gain; Power amplifiers; Quadrature amplitude modulation; Radio frequency; Radiofrequency amplifiers; Testing; Wideband; CMOS; DFDPD; m-WiMAX; power amplifier; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-5705-2

Type

conf

DOI

10.1109/ICMMT.2010.5524905

Filename

5524905