CMOS RF Circuits for Wireless Applications
- PDF / 343,678 Bytes
- 2 Pages / 600.03 x 792 pts Page_size
- 50 Downloads / 254 Views
Editorial CMOS RF Circuits for Wireless Applications Kris Iniewski,1 Mourad El-Gamal,2 and Robert Bogdan Staszewski3 1 Department
of Electrical & Computer Engineering, University of Alberta, ECERF Building, Edmonton, AB, Canada T6G 2V4 of Electrical & Computer Engineering, McGill University, McConnell Engineering Building, Room 633, 3480 University Street, Montreal, PQ, Canada H3A-2A7 3 Digital RF Processor Group, Texas Instruments, Dallas, TX 75243, USA 2 Department
Received 20 June 2006; Accepted 20 June 2006 Copyright © 2006 Kris Iniewski et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Advanced concepts for wireless communications present a vision of technology that is embedded in our surroundings and practically invisible, but present whenever required. From established radio techniques like GSM, 802.11, or Bluetooth to more emerging like ultra-wideband (UWB) or smart dust moats, a common denominator for future progress is the underlying CMOS technology. Although the use of deepsubmicron CMOS processes allows for an unprecedented degree of scaling in digital circuitry, it complicates implementation and the integration of traditional RF circuits. The explosive growth of standard cellular radios and radically different new wireless applications makes it imperative to find architectural and circuit solutions to these design problems. This special EURASIP issue contains carefully selected 12 papers that represent state-of-the-art CMOS designs for wireless applications. The first group of three papers from University of California at Berkeley, Philips Research, and the University of Alberta discusses various system aspects in the context of CMOS implementation. Cabric et al. propose novel radio architectures that might be used at 60 GHz and for cognitive radios. Leenaerts presents one of the first CMOS circuit implementations of the ultra-wideband (UWB) technology. Howard et al. delineate conditions under which error control coding (ECC) is efficient from an energy point of view in wireless sensor networks (WSNs). While it is true that heterogeneous circuits and architectures originally developed for their native technologies cannot be effectively integrated “as is” into highly scaled CMOS processes, one might ask the question whether those functions can be ported into more CMOS-friendly architectures to reap all the benefits of the digital design and flow. It is not predestined that RF wireless frequency synthesizers be always charge-pump-based PLLs with VCOs, RF transmit upconverters be I/Q modulators, receivers use only Gilbert cell
or passive continuous-time mixers. Performance of modern CMOS transistors is nowadays good enough for multi-GHz RF applications. The following four papers from Texas Instruments, Carleton University, and Silicon Labs describe the RF CMOS circuit design challenges. Ho et al. present a key component of RF direct proce
Data Loading...
