Abstract

Various RF bands, standards, modulation schemes, duplex mechanisms, and signal bandwidths needed for the mobile terminal call for a highly adaptable and reconfigurable RF receiver. The biggest bottleneck in achieving this goal lies with the RF preselect filter at the antenna, which is band specific and creates a bottleneck in being able to share the hardware. Solving this multiband programmability is the biggest challenge in achieving a RF receiver for software-defined radio. A few of the possible architectures and their limitations are presented. However, designing a multimode RF receiver for a given RF band with highly reconfigurable performance is an achievable goal. A WCDMA/EDGE receiver without interstage SAW filter in 90 nm digital CMOS is used as an example in illustrating the architecture, circuit, and system considerations for such a receiver.

Biography

Naveen Yanduru is currently a Design Manager at Texas Instruments Inc., and a Member Grade Technical Staff. While at Texas Instruments, he has led design teams in the design of various RF receivers including GSM/EDGE, WCDMA, TDSCDMA, GPS and multi-mode receivers. He is currently involved in the design of DRP/^/TM/ / chips, which are highly integrated ICs in deep sub-micron CMOS processes for mobile phones.

Notes

This lecture is cosponsored with and hosted by the IEEE SCV Circuits and Systems Society.  The meeting is held on Monday 19 May 2008, ten days after the normally scheduled MTT SCV lecture.