A High-Efficient CMOS RF Power Amplifier With Automatic Adaptive Bias Control

Author

Chen, Yi-Jan Emery ; Liu, Chih-Yun ; Luo, Tang-Nian ; Heo, Deukhyoun

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

Volume

16

Issue

11

fYear

2006

Firstpage

615

Lastpage

617

Abstract

A 2.4-GHz Doherty power amplifier (PA) is developed in 0.18-mum CMOS technology. An automatic adaptive bias control circuit is integrated with the auxiliary PA to improve the overall performance of the PA. Operated at 3V, the P_{1 dB} and associated power-added-efficiency (PAE) of the PA are 21dBm and 33%, respectively. At the output power 6-dB backoff from P_{1 dB}, the PAE remains 21%. The limited PAE degradation at backoff power levels makes the PA suitable for the applications with high peak-to-average power ratio

Keywords

CMOS analogue integrated circuits; UHF integrated circuits; UHF power amplifiers; 0.18 micron; 2.4 GHz; 3 V; CMOS technology; Doherty power amplifier; RF power amplifier; automatic adaptive bias control circuit; Adaptive control; Automatic control; CMOS technology; High power amplifiers; Integrated circuit technology; Power amplifiers; Power generation; Programmable control; Radio frequency; Radiofrequency amplifiers; Adaptive bias; CMOS; Doherty power amplifier (PA); orthorgonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAPR);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2006.884909

Filename

1717521