Channel Selection at RF Video
A holy grail in RF design has been to perform channel selection at RF, i.e., remove strong interferers and even out-of-channel noise at the receiver input rather than in the baseband. Such an approach is attractive for it obviates the need for SAW filters and greatly relaxes the linearity requirements of the receiver chain, ultimately leading to a lower power consumption and a more compact design. This research demonstrates a universal CMOS receiver employing RF channel selection and meeting the exacting demands of GSM and WCDMA. Drawing upon commutated networks, we introduce the concept of the "Miller bandpass filter" and several of its variants so as to create a receiver that achieves a narrow channel bandwidth and can withstand large blockers. Realized in 65-nm technology, the prototype provides a programmable bandwidth from 350 kHz to 20 MHz and draws 20 mW.The noise figure is 2.9 dB in the absence of blockers and 5 dB with a 0-dBm blocker at 20-MHz offset.
Instructor
Behzad Razavi
Behzad Razavi is Professor of Electrical Engineering at UCLA, where he conducts research on analog and RF integrated circuits. An IEEE Fellow, Prof. Razavi has served as an IEEE Distinguished Lecturer and has published more than 180 papers and seven books. He has received eight IEEE best paper awards and four teaching awards, and his books have been published in seven languages. He received the 2012 IEEE Pederson Award in Solid-State Circuits and was recognized as one of the top ten authors in the 50-year history of the IEEE International Solid-State Circuits Conference. He is a member of the National Academy of Engineering and the recipient of the 2017 IEEE CAS John Choma Education Award.
Publication Year: 2018