DocumentCode
2820809
Title
A 2.4 GHz fully integrated Doherty power amplifier using series combining transformer
Author
Kaymaksüt, Ercan ; Reynaert, Patrick
Author_Institution
ESAT-MICAS, Katholieke Univ. Leuven, Leuven, Belgium
fYear
2010
fDate
14-16 Sept. 2010
Firstpage
302
Lastpage
305
Abstract
A 2.4 GHz fully integrated Doherty power amplifier is fabricated in standard 90nm CMOS technology. The power amplifier employs a series combining transformer to eliminate bulky λ/4 transmission lines. An efficiency enhancement at power back-off is measured. The two-stage Doherty PA has 16.6 dB small-signal gain and produces 20.5 dBm saturated output power with a drain efficiency of 30.9% (PAE 26.7%) by using 2 V supply voltage. The PA is tested with 54 Mbps WLAN 802.11g signal and the PA meets the stringent EVM and spectral mask requirements at 12.9 dBm average output power with a drain efficiency of 14.1% (PAE 11.5%).
Keywords
CMOS integrated circuits; power amplifiers; transformers; CMOS technology; Doherty PA; Doherty power amplifier; EVM; WLAN 802.11g; frequency 2.4 GHz; gain 16.6 dB; size 90 nm; spectral mask; transformer; transmission lines; voltage 2 V; Circuit faults; Driver circuits; Gain; Impedance; Power amplifiers; Power generation; Transistors;
fLanguage
English
Publisher
ieee
Conference_Titel
ESSCIRC, 2010 Proceedings of the
Conference_Location
Seville
ISSN
1930-8833
Print_ISBN
978-1-4244-6662-7
Type
conf
DOI
10.1109/ESSCIRC.2010.5619704
Filename
5619704
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