A SAW-less CMOS TX for EGPRS and WCDMA

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 plu...

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Bibliographic Details
Main Authors: Hausmann, Kurt, Ganger, Jeff, Kirschenmann, Mark, Norris, George B, Shepherd, Wayne, Bhan, Vivek, Schwartz, Daniel B
Format: Conference Proceeding
Language:English
Subjects:
Clocks
CMOS Integrated Circuit
Code division multi-access
Feeds
Filters
Gain control
Impedance matching
Mobile Communication
Multiaccess communication
Pulse generation
Radio frequency
Surface acoustic wave filters
Surface acoustic waves
Transceiver
Transmitters
Voltage
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Summary: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.
ISSN:1529-2517
2375-0995
DOI:10.1109/RFIC.2010.5477357