Title :
A fully digital PWM-based 1 to 3 GHz multistandard transmitter in 40-nm CMOS
Author :
Nuyts, Pieter A. J. ; Reynaert, Patrick ; Dehaene, Wim
Author_Institution :
Dept. of Electr. Eng. (ESAT-MICAS), KU Leuven, Leuven, Belgium
Abstract :
A fully digital 1 to 3 GHz multimode transmitter is presented which contains two RF modulators: One uses baseband (BB) PWM, while the other uses RF PWM. RF PWM produces less harmonics, while BB PWM has a higher dynamic range (DR) and consumes less power. The BB PWM system satisfies the WLAN EVM limit over the whole frequency range. The RF PWM system achieves sufficient EVM for standards such as EDGE and WCDMA. Both systems support the use of multiple PAs to extend the DR using multilevel PWM.
Keywords :
CMOS analogue integrated circuits; microwave amplifiers; modulators; power amplifiers; pulse width modulation; transmitters; BB PWM system; CMOS; EDGE; RF PWM; RF modulator; WCDMA; WLAN EVM; baseband PWM; frequency 1 GHz to 3 GHz; full digital PWM-based multistandard transmitter; multilevel PWM; power amplifiers; power consumption; size 40 nm; Delay lines; Delays; Phase modulation; Pulse width modulation; Radio frequency; Wireless LAN; CMOS integrated circuits; OFDM; PWM; RF signals; delay lines; digital integrated circuits;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2013 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6059-3
DOI :
10.1109/RFIC.2013.6569620
