Converting multiple propagating wave energy to wireless energy transfer to charge low powered cellular devices flat-battery on an emergency situation where charging point is unavailable

the current trend of wireless communication and wireless automation controls in emerging modern/smart buildings and smart cities are excessively dense and forecasted to be continued denser as long as the need for wireless communication and controls system are increasing. This is because of the use of wireless communication and controls significantly economical efficient. Wireless devices individually transmit electromagnetic energy to the space to transfer energy either from indoor or outdoor. According the strength of the signals the transferring energy attenuation depends on the distance and on the geometrical design of the propagation medium. It is known that higher frequencies transmit higher energy at short distance. Hence, nowadays multiple wireless individual devices transmit energy from one location. These transmitted energies while propagating in space depending on the nature of location, their wave’s characteristics can be constructive and combined to form to higher energy which can be used to charge low powered devices such as cellular devices during emergency situation where charging point is not unavailable. Thus, this research paper is demonstrating re-using of wireless energy by developing a receiver circuit which detects multiple bands and combined them to useable single strength DC energy.