A compact tuneable output network for high efficient chireix outphasing power amplifier design

Author

Liu, Rui ; Schreurs, Dominique ; De Raedt, Walter ; Mertens, Robert

Author_Institution

Div. ESAT-TELEMIC, K.U. Leuven, Leuven, Belgium

fYear

2010

fDate

26-27 April 2010

Firstpage

67

Lastpage

70

Abstract

This paper reviews up-to-date Chireix outphasing power amplifier configurations and proposes a compact adaptive power combining network. It yields a lower loss and compact size over conventional architectures. Multilevel drive modulation is introduced to further improve the efficiency at low power level. The proposed concept was verified by standard CMOS 0.18 μm with a 1.8 V power supply at 5.2 GHz. The simulation results show that the PA exhibits a 17.4 dBm maximum output power, together with 30% PAE at 7 dB power back-off region. Compared with the conventional class-AB PA, the PAE improvement is 12% and 14% at 7 dB and 3 dB power back-off regions, respectively.

Keywords

CMOS integrated circuits; modulation; power amplifiers; CMOS; compact adaptive power combining network; compact tuneable output network; frequency 5.2 GHz; high efficient Chireix outphasing power amplifier design; multilevel drive modulation; size 0.18 mum; voltage 1.8 V; High power amplifiers; Linearity; Peak to average power ratio; Power amplifiers; Power combiners; Power generation; Radio frequency; Radiofrequency amplifiers; Signal generators; Tunable circuits and devices; Chireix amplifier; LINC; RF power amplifier; adaptive matching; integration; outphasing; power combining;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Nonlinear Microwave and Millimeter-Wave Circuits (INMMIC), 2010 Workshop on

Conference_Location

Goteborg

Print_ISBN

978-1-4244-7410-3

Electronic_ISBN

978-1-4244-7412-7

Type

conf

DOI

10.1109/INMMIC.2010.5480135

Filename

5480135