Abstract
The development of wireless energy transfer technologies occurs in several directions, each of which is characterized by its own set of driving forces and factors motivating the development. These factors are different and must be explicitly taken into account in our analysis, because in the dynamically changing world of knowhow and high-tech innovative projects, there is a clear tendency to reduce the time distance between a technical idea and its commercially in demand implementation. The paper provides an analysis of existing approaches in wireless transmission of electrical energy (WPT). The choice of one of the promising directions in wireless energy transmission technologies is justified – energy transmission via microwave radio signals. The main problems in this area are formulated and the possibility of supplying energy to remote autonomous devices using low-power high-frequency signals is considered. The results of the analysis are aimed at developing working prototypes of wireless power transmission devices. The current level of development of the production of electronic components makes it possible to create devices with dimensions of several millimeters, while the dimensions of the final devices are determined by the dimensions of antennas and batteries.
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