Title :
A progammable baseband anti-alias filter for a passive-mixer-based, SAW-less, multi-band, multi-mode WEDGE transmitter
Author :
Souza, Sandeep D. ; Chang, Frank ; Pamarti, Sudhakar ; Agarwal, Bipul ; Zarei, Hossein ; Sowlati, Tirdad ; Berenguer, Roc
Author_Institution :
UCLA, Los Angeles, CA, USA
Abstract :
A programmable baseband anti-alias filter (AAF) for a passive-mixer-based, 1.8V, SAW-less, multi-band, multi-mode WEDGE (WCDMA/HSUPA/EGPRS) cellular transmitter (TX) is described. This paper presents an AAF which results in ultra-low, -170dBc/Hz, receive-band noise, and enables the first single-mixer-based, multi-mode, SAW-less TX. By providing the noise and linearity performance only on-demand from system requirements, the presented AAF enables power savings of 14mW, or 34% of the total 41mW TX power. The AAF has been fabricated as part of a single-chip 0.13μm CMOS transceiver.
Keywords :
cellular radio; passive networks; radio transceivers; SAW-less WEDGE cellular transmitter; linearity performance; multiband WEDGE cellular transmitter; multimode WEDGE cellular transmitter; on-demand; passive-mixer-based WEDGE cellular transmitter; power 14 mW; power 41 mW; progammable baseband anti-alias filter; single-chip CMOS transceiver; size 0.13 mum; Current measurement; GSM; Linearity; Mixers; Multiaccess communication; Noise; Spread spectrum communication;
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
DOI :
10.1109/ISCAS.2011.5937599
