Thursday, June 21, 2007
IEEE Circuits and Systems, Dallas Chapter:   Seminar
 
https://ewh.ieee.org/soc/cas/dallas/ 
 

Title : Highly integrated, re-configurable RF Receivers with an example of a WCDMA, GSM/GPRS/EDGE receiver front-end without inter-stage

SAW filter in 90nm CMOS

Presenter :  Naveen Yanduru, MGTS, Texas Instruments Inc, Dallas, TX

Date : Thursday June 21, 2007. 6:30pm, Refreshments - Pizza & Drinks ; 7:00pm, Program

Location : Dallas Texins Activities Center, Conf Room 1 (North end of  Texas Instruments expressway site, 13900 N Central Expw.; site  entrance on north-bound access road, between Midpark Rd. & Spring Valley Rd.)

Abstract:

Multiple RF bands, modulation schemes, duplex mechanisms and signal bandwidths needed for the various standards for the mobile terminal, call for a highly reconfigurable RF receiver. Designing a “multi-mode” RF receiver for a given RF band with highly reconfigurable performance is thus important. FDD based standards such as WCDMA demand high linearity and normally require a SAW filter between LNA and mixer. TDD based standards like EDGE do not have the same challenges. A WCDMA/EDGE receiver without inter-stage SAW filter in 90nm CMOS is used as an example in illustrating the architecture, circuit and system considerations for such a receiver. However, to achieve a true Software Defined Radio receiver, the RF pre-select filter forms a bottleneck in terms of achieving a “multi-band” receiver. A few of the possible architectures for a multi-band receiver and their limitations are presented.

Brief Biography

Naveen Yanduru serves as Receiver Design Manager and a Member Group Technical Staff at Texas Instruments, Inc. While at TI he has led several RF receiver design teams and projects for various cellular standards including GSM, WCDMA, TDSCDMA and GPS. Most recently, he served as an architect and led the design of a dual mode UMTS (WCDMA, EDGE) receiver in 90nm CMOS that did not require an external inter-stage filter.

His research interests include multi-mode, multi-band receiver front-ends in deep submicron CMOS, quantifying the effect of AM blockers on RF receiver performance and design of on-chip RF filters. He has more than 10 years of experience in RF IC design, published over 15 papers in professional journals and international conferences, and holds 6 patents and patent applications. He has given invited talks and workshop tutorials at IEEE conferences including RFIC Symposium. He is a currently Distinguished Lecturer of IEEE-CAS for the term 2007-2008.