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Dr.Thomas Marzetta- Wireless Power Transfer: Principles and Prospects | NSF


May 13th, 2021, 11am-12:30pm
May 13, 2021 11:00 AM
 to 
May 13, 2021 12:30 PM
Virtual Meeting
Talk Abstract: The promise of wireless power transfer is exciting: cable-free operating rooms, battery-less drones, and factories populated by untethered robots. In short, a technological revolution. Some of the fundamental principles of wireless power have been fully elucidated: any system of transmitting/receive antennas is quantitatively described by an impedance matrix, the activity of matching the load impedance to the radiation impedance of the receive antenna is inconsistent with maximizing transfer efficiency, and efficiency-maximizing antenna currents are solutions to a generalized eigenvector/eigenvalue problem. But it is safe to say that our understanding of wireless power is very much incomplete, and there is considerable scope for breakthrough research, for which possible directions include metamaterials, superconductivity, new forms of MIMO, and super-directivity. U.S. industry and universities are not doing enough bold, fundamental research to make this happen. Funding agencies could improve the impact of universities through a redirection of research metrics to embrace risk and emphasize potential impact. Lack of working knowledge of electromagnetic theory is a serious obstacle to the contribution of many communications and signal processing researchers. To remedy this, I have developed a new graduate course at NYU, "A Linear System Approach to Wave Propagation", which replaces the traditional physicist's treatment of Maxwell's equations, based on potentials and the method of separation of variables, with a frequency/wavenumber Fourier transform solution better suited for engineering problems.

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