A portable wireless device for recharging batteries of vehicles, phones, and another apparatus is offered and described in this paper. Application of novel antennas, formed by sections of coupled radial spirals with dimensions significantly less than the operating wavelength in free space, makes it possible effective transmission RF energy from one object to another without radiation into surrounding medium.
A portable wireless device for recharging batteries of vehicles is described in this paper. Application of novel, based on coupled radial spirals antennas with dimensions significantly less than the operating wavelength in free space, makes it possible effective pumping of RF energy without radiation into surrounding medium.
In this paper we report on results of research of wireless power transfer (WPT) for mobile and wearable devices that are part of the IoT and Cyber Physical Systems. The results of analytical and numerical modelsof antenna array are presented. The antenna array consists of nine planar half-wave vibrators arranged in a 3x3 square formation.The modeling performed in MATLAB provided evidence that directional antenna arrays and lower frequency band (LPD 433) are preferable for more effective collection of electromagnetic energy.