In today's era, mobile phones have become a basic part of our day to day lives and their phone side to excessive use of mobile phones leads to early drainage of mobile phones batteries which have been a great issue. The mobile talk time and battery stand by varies in every mobile phone and it depends upon its battery manufacturer. This proposes mid to facilitate the recharging of mobile batteries easily to the extent that the phone battery will get recharge wireless via cellular communication. This means that whenever the user is on call, the phone will charge automatically. This technology is an application of RF energy harvesting. Since the availability of RF energy in our surroundings is abundant. In earlier times too, it was a belief that wireless charging replaces wires and cables like how Bluetooth and Wi-Fi have modernized personal communication. The prevailing methods of wireless charging highly depend upon the concept of inductive and resonance coupling using the electromagnetic field that transfers energy from the transmitter to the receiver. The main focus of this proposed solution is to design a system that recharges the mobile phone batteries via cellular communication and independent of their battery manufacturer and type of cables and wires used for a particular USB port. This entire process is done by the employment of microwaves and RF energy harvesting in an eco-friendly way. The microwave signal is transmitted from the high power microwave generator Magnetor which acts as a transmitter with the help of a slotted waveguide antenna and transmits the power along with the message signal at a frequency up to 2.45GHz. With this advancement, there is some minimal addition to the hardware design of the mobile handset. It includes the addition of a Rectenna which is a mesh network of rectifying diode, rectifying filter, and sensor circuitry. Further, the advantages, limitations and drawbacks and future improvements associated with wireless charging of mobile phones are discussed in this paper.
Advanced Power Transfer, Inductive Coupling, Electromagnetic Field, RF Energy Harvesting, Rectenna, Sensor Circuitry
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