A 1.9-GHz, 1-W CMOS class-E power amplifier for wireless communications

Authors
Tsai, KC Gray, PR
Citation
Kc. Tsai et Pr. Gray, A 1.9-GHz, 1-W CMOS class-E power amplifier for wireless communications, IEEE J SOLI, 34(7), 1999, pp. 962-970
Citations number
23
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE JOURNAL OF SOLID-STATE CIRCUITS
ISSN journal
00189200 → ACNP
Volume
34
Issue
7
Year of publication
1999
Pages
962 - 970
Database
ISI
SICI code
0018-9200(199907)34:7<962:A11CCP>2.0.ZU;2-#
Abstract
This paper presents a 1-W, class-E power amplifier that is implemented in a 0.35-mu m CMOS technology and suitable for operations up to 2 GHz, The con cept of mode locking is used in the design, in which the amplifier acts as an oscillator whose output is forced to run at the input frequency. A compa ct off-chip microstrip balun is also proposed for output differential-to-si ngle-ended conversion. At 2-V supply and at 1.98 GHz, the power amplifier a chieves 48% power-added efficiency (41% combined with the balun).