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Many names, many advantages – Are resonant cavity antennas the killer planar space-saving approach to get 15-25 dBi gain?
May 19, 2017 @ 6:00 pm - 8:00 pm
Co-sponsored by: AP01/MTT17 & ED/CAS
This presentation will take the audience through historical achievements of RCA technology, giving emphasis to breakthroughs in the last 10 years. Special attention is given to methods that led to aforementioned bandwidth enhancement and area reduction, dramatic improvement of gain-bandwidth product and unprecedented gain-bandwidth product per unit area demonstrated by RCAs, both theoretically and experimentally. Several choices of superstructures are discussed. These superstructures include all dielectric superstrates with axial permittivity gradients and transverse permittivity gradients and printed superstructures also known as PSSs or metasurfaces. Due to ultra-compactness of modern designs and edge radiation becoming a significant player in the principle of operation, different optimisation methods and strategies have been developed to replace previous unit-cell based methods, which were only suitable for previous larger RCAs. In particular, optimisation of RCAs using automated optimisation methods, including evolutionary algorithms such as Genetic algorithms and Particle Swarm algorithms as well as statistical optimisation algorithms, is described, illustrating the improvements that have been achieved from such optimisations by the speaker’s team and others. Near-filed phase transformation with metasurface-like phase correction structures (PCS) to enhance near-field phase uniformity, and hence far-field directivity, of conventional larger RCAs is presented, highlighting physical reasons for the phase non-uniformity. Both printed (metasurface-type) PCSs and all-dielectric PCSs are included in this discussion. The presentation will conclude with yet unresolved issues, which could be addressed in future research.
Speaker(s): Dr. Karu Esselle,
Event Time:6:00 AM to 8:00 PM
6:00:6:30 PM – Refreshments and Networking
6:30PM-7:30 PM: Talk by Professor Karu Esselle, Macquarie University, Sydney, Australlia
Seminar in ECE 202 All Welcome: There is no fee/charge for attending IEEE technical semiar. You don’t have to be an IEEE Member to attend. Refreshment is free for all attendess. Please invite your friends and colleagues to take advantages of this Invited Distinguished Lecture.
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