Wireless Power Transfer Using Metamaterial Bonded Microstrip Antenna for Smart Grid WSN

Wireless Power Transfer (WPT) system is a suitable alternative for power transmission where conventional wired power transfer faces geographical challenges. In a long range wireless power transmission system, power is transmitted through microwaves. A highly directive antenna is required for an effective transmission through this system. This paper talk about a circularly polarized microstrip rectangular patch antenna incorporated with a metamaterial slab. Use of microstrip antennas will considerably reduce the size of WPT system in comparison to other microwave antenna. In this paper the modeling and analysis of the wireless power transmission system is done on 2.45 GHz frequency and using GaAs Schottky barrier diode for the rectification of microwave power to DC power at the receiver end. Antenna assigned with metamaterial proposed in paper will enhance the amount of transferred power to wireless sensors network with less radiation loss.