Tournament-Shaped Magnetically Coupled Power-Combiner Architecture for RF CMOS Power Amplifier

Author

Park, Changkun ; Lee, Dong Ho ; Han, Jeonghu ; Hong, Songcheol

Author_Institution

Korea Adv. Inst. of Sci. & Technol., Daejeon

Volume

55

Issue

10

fYear

2007

Firstpage

2034

Lastpage

2042

Abstract

A tournament-shaped magnetically coupled power-combiner architecture for a fully integrated RF CMOS power amplifier is proposed. Various 1 : 1 transmission line transformers are used to design the power combiner. To demonstrate the new architecture, a 1.81-GHz CMOS power amplifier using the tournament-shaped power combiner was implemented with a 0.18-mum RF CMOS process. All of the matching components, including the input and output transformer, were fully integrated. The amplifier achieved a drain efficiency of 38% at the maximum output power of 31.7 dBm.

Keywords

CMOS analogue integrated circuits; power amplifiers; power combiners; radiofrequency amplifiers; RF CMOS power amplifier; tournament-shaped magnetically coupled power-combiner; transformers; Circuits; Couplings; Differential amplifiers; Distributed amplifiers; Power amplifiers; Power combiners; Power transmission lines; Radio frequency; Radiofrequency amplifiers; Transformers; CMOS; differential; impedance transformation; load impedance; power amplifier; power combiner; transformer; transmission line;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2007.905482

Filename

4339622