A progammable baseband anti-alias filter for a passive-mixer-based, SAW-less, multi-band, multi-mode WEDGE transmitter

Sandeep D'Souza,Mau-Chung Frank Chang,Sudhakar Pamarti,Bipul Agarwal,Hossein Zarei,Tirdad Sowlati,Roc Berenguer

Circuits and Systems（2011）

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摘要

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.

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关键词

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

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