Active Integrated Antennas: Fundamentals and Applications
Next generation wireless terminals and devices will include large amounts of antennas serving various proposes and standards. This will pose new size and volume constraints on such antennas and their accompanying radio-frequency front-ends (RF-FE). In addition, at higher frequency bands (i.e. millimeter waves), beam-forming (or beam-switching) will be required to provide reliable communication links and avoid constant blockage from nearby obstacles. Traditionally, antennas are designed and optimized to be interfaced to their RF-FE via a 50Ω input impedance. Circuit and antenna designers were always asked to satisfy this requirement to have a good matching over the band of interest. This scheme does not always provide the best overall system performance. Active antennas can provide better gain, bandwidth and efficiencies if properly designed.
This talk will start with the historical developments of active integrated antennas, their features, importance, applications and design procedures supported with examples from literature. Basic definitions and design aspects will be highlighted for the design of active integrated antennas. Then, it will highlight a new co-design methodology that my group has come up with to co-design active and passive parts simultaneously without the requirement of 50 ohm. This method has been proven very efficient as compared to other conventional methods and relaxes the separate requirements of 50 ohm matching. Examples of this co-design method will be given for narrow-band, wide-band and ultra-wide band-based active integrated antenna designs.
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Dr. Sharawi
Dr. Mohammed Sharawi
Next generation wireless terminals and devices will include large amounts of antennas serving various proposes and standards. This will pose new size and volume constraints on such antennas and their accompanying radio-frequency front-ends (RF-FE). In addition, at higher frequency bands (i.e. millimeter waves), beam-forming (or beam-switching) will be required to provide reliable communication links and avoid constant blockage from nearby obstacles. Traditionally, antennas are designed and optimized to be interfaced to their RF-FE via a 50Ω input impedance. Circuit and antenna designers were always asked to satisfy this requirement to have a good matching over the band of interest. This scheme does not always provide the best overall system performance. Active antennas can provide better gain, bandwidth and efficiencies if properly designed.
This talk will start with the historical developments of active integrated antennas, their features, importance, applications and design procedures supported with examples from literature. Basic definitions and design aspects will be highlighted for the design of active integrated antennas. Then, it will highlight a new co-design methodology that my group has come up with to co-design active and passive parts simultaneously without the requirement of 50 ohm. This method has been proven very efficient as compared to other conventional methods and relaxes the separate requirements of 50 ohm matching. Examples of this co-design method will be given for narrow-band, wide-band and ultra-wide band-based active integrated antenna designs.
Biography:
Prof. Mohammad S. Sharawi is a Principal/Lead engineer with Blue Origin, USA, working on cutting edge communication systems for space applications, and an affiliate professor of Electrical and Computer Engineering at the University of Washington, USA. He was a tenured Professor of Electrical Engineering at Polytechnique Montréal, Montréal, Québec, Canada, between 2019-2023. Prof. Sharawi was with King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia, between 2009-2018. He founded and directed the Integrated Multi-Application Antenna Group (IMAAG) and the Antennas and Microwave Structure Design Laboratory (AMSDL). He was a visiting Professor at the University of Calgary, Canada, and Oakland University, USA, in 2013, 2014 and 2023.
Prof. Sharawi’s areas of research include Multiband Printed Multiple-Input-Multiple-Output (MIMO) Antenna systems, Reconfigurable and Active integrated Antennas, Applied Electromagnetics, Millimeter-wave MIMO antennas and Integrated 4G/5G antennas for various applications, Dielectric Antennas, and on package antennas. He has more than 420 papers published in refereed journals and international conferences, 11 book chapters, and three books entitled “Printed MIMO Antenna Engineering,” 2014, “Design and Applications of Active Integrated Antennas,” 2018, and “MIMO Antenna Systems for 5G and Beyond”, 2024. Prof. Sharawi has 28 issued/granted and 8 pending patents in the United States Patent Office (USPO). He is serving/served as Area and Associate Editor for IEEE AWPL, IEEE OJAP, MOTL, IET-MAP and Frontiers. He served on the Technical and organizational program committees of several international conferences (EuCAP, APS, IMWS-5G, APCAP, iWAT). Prof. Sharawi is a member of the IEEE Member benefits committee, and the person managing the APS Student travel grant. He served as the EuRAAP delegate for north America. He is a Fellow-IEEE and Fellow-IET. He was serving as the IEEE Seattle AP/MTT/ED joint chapter Co-Chair in 2024.