Title :
A 1.7-GHz 31dBm differential CMOS Class-E Power Amplifier with 58% PAE
Author :
Brama, R. ; Larcher, L. ; Mazzanti, A. ; Svelto, F.
Author_Institution :
Univ. di Modena e Reggio Emilia, Modena
Abstract :
This paper shows that CMOS Class-E PAs are capable of high Power-Added Efficiency (PAE), even when delivering large output powers at Radio Frequency (RF). In particular, a cascode device is used to obtain high efficiency while assuring reliable operation. A differential solution has been adopted to maximize 2nd harmonic suppression and minimize potential on-chip interference. Prototypes realized in 0.13 mum CMOS technology using thick oxide devices show the following performances: 31 dBm maximum output power at 1.7 GHz with 67% drain efficiency and 58% PAE, -51 dBc and -39.5 dBc suppression for 2nd and 3rd harmonics, respectively.
Keywords :
CMOS integrated circuits; UHF amplifiers; differential amplifiers; harmonics suppression; power amplifiers; 2nd harmonic suppression; CMOS technology; cascode device; differential CMOS class-E power amplifier; frequency 1.7 GHz; potential on-chip interference; power-added efficiency; radio frequency; thick oxide devices; CMOS technology; Differential amplifiers; Harmonics suppression; Interference suppression; Power amplifiers; Power generation; Power system harmonics; Prototypes; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405792
