Title :
A SAW-less CMOS TX for EGPRS and WCDMA
Author :
Hausmann, Kurt ; Ganger, Jeff ; Kirschenmann, Mark ; Norris, George B. ; Shepherd, Wayne ; Bhan, Vivek ; Schwartz, Daniel B.
Author_Institution :
Fujitsu Microelectron. of America, Tempe, AZ, USA
Abstract :
A 90 nm CMOS TX path architected for operation without inter-stage SAW filters is shown. The SAW elimination strategy is purely low noise design but the architecture still achieves DG.09 weighted TX current drain of 50 mA from the battery. The combination of a passive interleaved switching mixer plus digital gain control allows 2% EVM at 2 dbm and 4.2% at -78 dbm.
Keywords :
code division multiple access; packet radio networks; surface acoustic wave filters; CMOS TX path; EGPRS; SAW elimination strategy; SAW filters; WCDMA; current 50 mA; digital gain control; passive interleaved switching mixer; size 90 nm; surface acoustic wave filters; Clocks; Feeds; Filters; Gain control; Impedance matching; Multiaccess communication; Pulse generation; Radio frequency; Surface acoustic waves; Voltage; CMOS Integrated Circuit; Code division multi-access; Mobile Communication; Surface acoustic wave filters; Transceiver; Transmitters;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6240-7
DOI :
10.1109/RFIC.2010.5477357
