Download Phase Noise Reduction Techniques for RF CMOS Voltage

Department of Electronic Engineering
IEEE AP/MTT HK
Joint Chapter
Seminar
Phase Noise Reduction Techniques for RF CMOS Voltage
Controlled Oscillator Design
by
Dr K K Michael Cheng
Department of Electronic Engineering
Chinese University of Hong Kong
Abstract
In wireless communication systems, the phase noise of VCO is a prime concern to ensure
little interference with nearby channels. Low phase noise also implies the use of high Q
resonators such as off-chip inductors or bond-wires, which is impractical for low-cost highly
integrated RF transceiver design. An effective way to reduce phase noise is enlarging the
oscillation amplitude, thus making the signal much larger than the noise. However, for some
applications, the maximum voltage swing is limited by the low supply voltage and power
consumption requirement. Recently, much research effort has been devoted to the reduction
of phase noise in CMOS oscillator design. In this presentation, the design and implementation
of fully integrated 1.5 GHz VCO circuits using 0.6μm digital CMOS technology will be
described. Various new circuit techniques for phase-noise reduction will also be addressed.
Biography
Michael obtained both his B.Sc. degree (1987) and Ph.D. degree (1993) in electronic
engineering from King’s College, University of London, UK. From 1990 to 1992, he was
Research Assistant at King’s, researching in the area of hybrid circuit and MMIC design.
From 1993 to 1995, he worked as Post-Doctoral Research Associate on the design and
analysis of coplanar structures for microwave/millimeter-wave applications. In 1996, he
joined the department of electronic engineering at the Chinese University of Hong Kong as
Assistant Professor. Michael is the author/co-author of over 30 journal papers and more than
20 international conference papers. He is also a contributing author of two books: “MMIC
Design” and “RFIC & MMIC design and technology”, published by the IEE in 1995 and
2001, respectively. His current research interests include MMIC/RFIC design, linearization
techniques for microwave circuits, and application of LTCC technology.
Date: December 18, 2002 (Wednesday)
Time: 3:00 pm – 4:00 pm
Venue: G6302, EE Conference Room (Please take lift no 7 to 6 floor)
City University of Hong Kong
ALL ARE WELCOME
Language: English
Enquiry: Dr K W Leung, Department of Electronic Engineering, CityU
Tel: 2788 9382 Fax: 2788 7791 Email: [email protected]