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Public Seminar - Low Phase Noise Oscillators, All Optical Switching and Optical Fibre Sensing

Abstract

The main theme of this talk will describe the theoretical developments in the design of ultra low noise oscillators. It will be shown that significant insight and highly accurate modelling can be obtained using a simple linear theory. Rules for optimum design will then be described. Oscillators using LC, crystal, SAW, transmission line and dielectric resonators have been developed and are shown to offer performance usually with 1dB of the theoretical predictions. A number of design examples will be presented. Some of these oscillators now offer the best performance available in the world and are operating in industry. Most recently the author has presented a course on low noise oscillators including a lab class at the IEEE International Microwave Symposium (IMS2009) in Boston USA and again in a month at IMS 2010. The delegates are provided with a battery powered lab kit and a Java Runtime software package. This was the first time that a morning theory class and afternoon lab had been run at this conference. As this highlights the complete design process it will be briefly covered in this seminar. To end the talk, the author will briefly present some earlier work on all optical self routing switching and optical fibre sensors as he has re-started research work in this area.

Speaker Biographical Sketch

Jeremy K.A. Everard obtained his PhD from the University of Cambridge in 1983. He worked in industry for six years at the GEC Marconi Research Laboratories, M/A-Com and Philips Research Laboratories on Radio and Microwave circuit design. At Philips he ran the Radio Transmitter Project Group. He then taught RF and Microwave Circuit design, Opto-electronics and Electromagnetism at King's College London for nine years while leading the Physical Electronics Research Group. He became University of London Reader in Electronics at King's College London in 1990 and Professor of Electronics at the University of York in September 1993. In 2007, he was awarded the BAE Systems/Royal Academy of Engineering Research Chair in Low Phase Noise Signal Generation. In the RF/Microwave area his research interests include: The theory and design of low noise oscillators using Inductor Capacitor (LC), Surface Acoustic Wave (SAW), Crystal, Dielectric, Transmission line, Coaxial ceramic and Helical resonators; Flicker noise measurement and reduction in amplifiers and oscillators; High efficiency broadband amplifiers; High Q printed filters with low radiation loss, Broadband negative group delay circuits. His research interests in Opto-electronics include: All optical self-routing switches which route data-modulated laser beams according to the destination address encoded within the data signal; Ultra-fast 3-wave opto-electronic detectors; Mixers and Distributed fibre optic sensors. He has published papers on: oscillators, amplifiers, resonators and filters; all optical switching, optical components, optical fibre sensors and mm-wave optoelectronic devices and most recently a book on 'Fundamentals of RF Circuit Design with Low Noise Oscillators (Wiley).

Date: 29 April 2010 (Thursday)
Time: 3:00pm – 4:00pm
Venue: B6605, 6/F, Academic Bldg, City University of Hong Kong,
83 Tat Chee Avenue, Kowloon Tong, Kowloon,
Hong Kong.
Language: English

For seat reservation, please fax the Registration Form to (852)-2788 7579 on / before 29 April 2010.