Title :
A SAW-less multiband WEDGE receiver
Author :
Gaborieau, Olivier ; Mattisson, Sven ; Klemmer, Nikolaus ; Fahs, Bassem ; Braz, Fabio T. ; Gudmundsson, Richard ; Mattsson, Thomas ; Lascaux, Carine ; Trichereau, Christophe ; Suter, Wen ; Westesson, Eric ; Nydahl, Andreas
Author_Institution :
ST-NXP Wireless, Caen, France
Abstract :
With an ever-increasing number of frequency bands supported by cellular transceivers (TRX), front-end (FE) complexity increases due to a large number of external SAW filters. The challenge of removing inter-stage filters from multiband 3G receivers (RX) resides in the additional noise contribution due to limited transmitter (TX) leakage rejection at the RX input, intermodulation (IM) products and cross-compression due to TX leakage and strong out-of- band blockers. Increased downconverter dynamic range is thus required for a SAW-less RX path. In addition, avoiding SNR degradation from reciprocal mixing imposes additional constraints on LO phase noise. The presented transceiver integrates all RX and TX functions required to support a tri-band WCDMA/HSPA (bands l-VI, VIII, IX) and quad- band GSM/GPRS/EDGE application in a single chip.
Keywords :
3G mobile communication; cellular radio; intermodulation; phase noise; radio receivers; transceivers; LO phase noise; RX functions; SAW-less multiband WEDGE receiver; SNR degradation; TX functions; cellular transceivers; downconverter dynamic range; front-end complexity; intermodulation products; multiband 3G receivers; quad- band GSM/GPRS/EDGE application; transmitter leakage; tri-band WCDMA/HSPA application; Degradation; Dynamic range; Frequency; Iron; Multiaccess communication; Phase noise; SAW filters; Signal to noise ratio; Transceivers; Transmitters;
Conference_Titel :
Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-3458-9
DOI :
10.1109/ISSCC.2009.4977334
