Abstract:
As wireless communication systems continue to evolve, the demand for microwave components that are smaller, more efficient, and capable of delivering superior performance has never been greater. This keynote introduces a transformative design philosophy for resonator-based microwave devices, such as filters and antennas, that challenges the long-standing assumption of interconnected resonators. Traditionally, these devices are modeled as chains of coupled resonators, where inter-resonator coupling defines the overall response. In contrast, our approach reinterprets resonant modes as orthogonal eigenmodes that couple exclusively in parallel to external ports.
This paradigm shift offers unprecedented flexibility in shaping frequency responses, enabling designers to achieve compact, cost-effective solutions without compromising performance. By leveraging this concept, we unlock new opportunities for enhanced transmission zero control, improved isolation, and superior ratios of quality factor to volume. Through several innovative implementations, including ultra-compact cavity filters, high-isolation duplexers, and multi-mode antennas, we demonstrate how this approach can dramatically reduce size and cost while expanding functionality. These advancements pave the way for the next generation of wireless technology, where performance and miniaturization coexist without trade-offs.
Biography:
IEEE Fellow, Professor and Leader of Electromagnetic Innovations (ƐMAGIN) at The University of Queensland (UQ), Australia. Previously, Prof Abbosh was the Head of the School of ITEE-UQ, which includes five Departments (Electrical Engineering, Biomedical Engineering, Software Engineering, Data Science & Human Centred Computing). He also served as Director of Research and Director of Research Training at UQ. Moreover, Prof Abbosh was the Director of the Medical Electromagnetic Imaging (MEI) Cooperative Research Centre. He is the chief inventor of more than 20 patents licensed to the medical industry. His patents form the core IP of two Australian companies. Prof Abbosh has authored over 600 papers and won many awards, including the IEEE King Prize twice (2016 & 2019), for his excellence in fundamental, applied, and translational research. UQ Excellence in HDR Supervision (2016) & Entrepreneurship Award (2018), and many best paper awards in premier international conferences.
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