Title :
A WCDMA, GSM/GPRS/EDGE receiver front end without interstage SAW filter
Author :
Yanduru, Naveen K. ; Griffith, Danielle ; Bhagavatheeswaran, Shanthi ; Chen, Chien-Chung ; Dulger, Fikret ; Fang, Sher-Jiun ; Ho, Yo-Chuol ; Low, Kah Mun
Author_Institution :
Texas Instrum., Dallas, TX
Abstract :
A dual mode RF receiver for DCS band in 90 nm CMOS is presented. The receiver uses direct conversion for WCDMA mode and uses 100 kHz low IF for GSM/GPRS/EDGE (GGE) mode. The receiver does not use an interstage SAW filter between LNA and mixer. The mixer stage is followed by a variable gain amplifier. Two times LO clock is provided from external source and a divide by two is used to generate quadrature clocks. The receiver has a NF of 2.9 dB and meets all the out of band and in band linearity requirements for both WCDMA and GGE modes
Keywords :
cellular radio; code division multiple access; low noise amplifiers; mixers (circuits); packet radio networks; radio receivers; 100 kHz; 2.9 dB; 90 nm; DCS band; GSM/GPRS/EDGE receiver front end; LO clock; WCDMA mode; WCDMA receiver front end; direct conversion; dual mode RF receiver; intersgate SAW filter; low noise amplifier; mixer stage; quadrature clocks; variable gain amplifier; wideband code division multiple access; Clocks; Distributed control; GSM; Gain; Ground penetrating radar; Linearity; Multiaccess communication; Noise measurement; Radio frequency; SAW filters;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651078
