Visiting Lecture: Novel Method and Device for RF Energy Transmission and Reception/Harvesting

Wednesday, October 11, 2017

Lecturer: PhD Gamini Piyadasa, University of Manitoba, Canada, Department of Electrical and Computer Engineering

Time: 13:00-15:00

Venue: Lecture Hall TS101

Organizer: IEEE FI COM/IT  Chapter


Title of the Talk: Novel Method and Device for RF Energy Transmission and Reception/Harvesting



Energy propagation in free space is described by two main theories: electromagnetic and quantum theory. For instance, in the shielding of radio waves, energy is considered to be propagated in the form of electromagnetic waves. Based on the electromagnetic theory, electric and magnetic fields inside a conducting enclosure, commonly known as Faraday shield, caused by external electromagnetic radiation, should be zero and no current should be produced in conductors placed inside the enclosure. In this study, we observed a current induced in a conductor placed inside an enclosure made from thick solid copper sheets, due to an external electromagnetic source.

We have observed this phenomenon in multiple configurations with consistent results. These results led us to investigate and attempt to gain more insight into the phenomenon of energy propagation in free space. We embarked on this study to obtain a better understanding of the electromagnetic theory, which led to a novel approach to investigate the generation of currents inside a conducting enclosure. We proposed a new model called spin-energy theory to overcome the drawbacks of the existing electromagnetic theory. The proposed spin energy model is able to explain the presence of electromagnetic fields and induction of current in a conductor inside the completely closed conducting enclosure. This model was also be used to better explain the propagation and interaction of energy with matter in free space, including Young's double slit experiment which provided the basis for the wave theory of light comprehensively.

The applications from the Spin Energy model can also lead to novel and more effective designs of many applications, such as photovoltaic cell used as a solar energy harvesting, energy storage, electromagnetic shielding, stealth technology, etc. Currently, we have developed and patented a symmetrical radio transmitter & a receiver based on the Spin Energy model. In contrast to existing systems, power reduction due to impedance mismatch can be greatly reduced. Therefore, increase of radiation efficiency by a factor greater than 50 percent is demonstrated in this new invention.




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Event location

University of Oulu, Tietotalo, Lecture Hall TS 101

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Last updated: 4.10.2017