A fully integrated linear CMOS power amplifier with high output power and dynamic range for WiMAX application

Author

Belabad, A.R. ; Masoumi, Nasser ; Ashtiani, S.J. ; Sehatbakhsh, N.

Author_Institution

Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran

fYear

2013

fDate

26-28 March 2013

Firstpage

30

Lastpage

34

Abstract

A fully integrated 2.4 GHz power amplifier with high output power in a standard 0.18 μm CMOS process for WiMAX application is presented. For increasing linearity and efficiency, a parallel cascade class A&B power amplifier is used. A new interleaved PCT power combiner is proposed for increasing output power that combines output current of two similar power amplifiers. The proposed power amplifier with 3.3 V power supply provides maximum output power of 32.5 dBm and power added efficiency of 37.9% at 2.4 GHz operating frequency. The proposed power amplifier exhibits high output power of 32.2 dBm at 1dB compression point. The simulation results for proposed PA with modulated OFDM signal show that -31 dB error vector magnitude at the average power of 25 dBm can be achieved.

Keywords

CMOS analogue integrated circuits; UHF power amplifiers; WiMax; power combiners; transformers; PA; WiMAX application; compression point; dynamic range; efficiency 37.9 percent; error vector magnitude; frequency 2.4 GHz; fully integrated linear CMOS power amplifier; high output power; interleaved PCT power combiner; modulated OFDM signal; parallel cascade class A power amplifier; parallel cascade class B power amplifier; parallel-combining transformers; size 0.18 mum; voltage 3.3 V; CMOS integrated circuits; Decision support systems; Diffusion tensor imaging; Nanoscale devices; Power amplifiers; Solid state circuits; WiMAX; CMOS; Parallel Class A&B PA; Power Amplifier (PA); Transformer; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Design & Technology of Integrated Systems in Nanoscale Era (DTIS), 2013 8th International Conference on

Conference_Location

Abu Dhabi

Print_ISBN

978-1-4673-6039-5

Electronic_ISBN

978-1-4673-6038-8

Type

conf

DOI

10.1109/DTIS.2013.6527773

Filename

6527773