Coupled Resonator Microwave Filters: A Heretic's Journey
Abstract
The talk covers my journey into the theory and design of coupled resonator filters highlighting some of the 'crazy' ideas my collaborators and I put forward. Concepts such as non-resonating nodes, frequency dependent coupling, and coupling through higher/lower modes, seem to have finally gained acceptance in the filter community. The idea that a filter can be represented by more than one coupling matrix, with the transversal form being the most general form, was especially ridiculed, and still viewed with 'suspicion'. Arguments will be presented to demonstrate the important role that this concept could play in furthering our understanding of the physics of filtering including power transfer within a filter and group delay as well as designing 'better' microwave filters. Opportunities and challenges in emerging fields such as quantum computing will be briefly discussed.
Biography of the speaker
Professor Smain Amari received his MS degree in Electrical Engineering and PhD degree in physics from Washington University in St.Louis in 1989 and 1994, respectively. His research covered quantum field theory and quantum many particle systems, applied mathematics and numerical techniques, and electromagnetic and microwave engineering. He was professor of electrical and computer engineering at the Royal Military College of Canada (Retired). More recently he has focussed on issues related to quantum mechanics and quantum computing at Oxford University (UK).