Solid State Circuits Society

June 16, 2005

Our speaker was  Sudhir Aggarwal (Philips Semiconductor), and the topic of his presentation was ” Design Challenges for a UWB Radio“

Abstract

Ultra wide band (UWB) is an emerging wireless technology for very high rate data communication. Currently, wireless networking solution are limited to data rate of several tens of Mb/s. UWB holds the promise of providing data rate of as high as 1Gb/s. With these data rates, one can envision a world without cables at the back of PCs or TVs. With the approval of FCC, several new frequency bands have been allocated for UWB applications. Out of these, the band around 3 to10GHz is being exploited mostly as current IC technologies are more suited for implementation in this frequency range. For implementation of a UWB radio, two major approaches are under deliberation in IEEE standardization committee. An industrial consortium known as Multi-Band OFDM Alliance (MBOA) has proposed one of these approaches. The MBOA approach reduces the radio complexity though it requires solution to many challenging implementation issues. In this lecture, after a brief introduction to UWB, a few target applications of UWB will be presented. A comparison of the relative strengths of the two approaches for implementing the UWB physical (PHY)layer will be mentioned. Design challenges for implementing a UWB radio will be discussed. A design implementation of a UWB radio receiver based on MBOA approach will be shown. Results obtained from a test-chip of the UWB receiver fabricated using a 70GHz ft SiGe technology will be presented.

Biography

Sudhir Aggarwal (S’84, M’89, SM’03) received B.S. degree in Electronics & Communication Engineering with top rank. While working at the Indian Institute of Technology (IIT), Delhi, he obtained his Ph.D. degree in Electrical Engineering in 1988. From 1981 to 1989, he served at the Center for Applied Research in Electronics, IIT Delhi, working on various industrial and defense sponsored projects in the area of MOS analog ICs for signal processing applications. From 1991 to 1995, he was with ST Microelectronics (France and India) where he developed statistical circuit/device models and optimization tools for analog circuits in BiCMOS technology. Since 1995, he is working at Philips Semiconductors, San Jose, currently, as a Senior Principal Engineer. At Philips, he has designed and developed transceiver circuits for CDMA and WLAN applications. His current interest includes RF ICs for wireless communication, in particular, for UWB and multi-mode systems. He is the author or coauthor of 15 papers.

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