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Wireless charging of mobile phones by using microwaves

Aug 19, 2014

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Engineering

Wireless charging of mobile phones by using microwaves by Aveen meena

  • Submitted to: Submitted by: Er.Deepesh Namdev Name: Aveen Meena HOD cum Asso. Prof. Roll no.:10EGKEC011 (E&C, EE Department) DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGG. Gurukul Institute of Engineering & Technology, Kota
  • Contents INTRODUCTION PRINCIPLE OF OPERATION TRANSMITTER RECEIVER IMPLEMENTAION ADVANTAGES DISADVANTAGES CONCLUSION
  • Introduction The mobile can be charged at any time, anywhere automatically as you talk in your mobile phone! This technology would eliminate the need for physically plugging in an Mobile phone. The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted wave guide antenna at a frequency is 2.45 GHz
  • Principle of Operation & Block Diagram Transmitting station with the microwave transmitter sensor Rectenna RF cable circulator waveguide Slotted waveguide Antenna mobile signal The microwave signal is transmitted along with message signal using slotted wave guide antenna. The sensor search for the mobile signal , in addition it has a RECTENNA. Rectenna receives the transmitted power and converts the microwave power to DC power.
  • TRANSMITTER The MAGNETRON is a self-contained microwave oscillator. Efficiency of this high power oscillator lies between 50% and 80%. Electron beam Energy Microwave Energy Cross Field Device
  • Slotted waveguide antenna It is used as ideal power transmitter (because of its high aperture efficiency >95%) . It has high power handling capacity . It has 64 slots of power uniformly through free space to the rectenna.
  • Reciever Rectenna:- Microwave Energy DC Energy
  • The microwave signal is transmitted along with message signal using slotted wave guide antenna. The sensor search for the mobile signal , in addition it has a RECTENNA. It comprises of a dipoles and Schottky barrier diodes Usually its elements are arranged in the mesh pattern. Rectenna
  • Implementation Recently NOKIA has launched this wireless charging technology in its new recent mobile model NOKIA LUMIA 1020. Energy efficient chargers of all size and shape to match our phone. They are all quiet compactable , which means we can use any chargers as we like.
  • Advantages The need of different types of chargers by different manufacturers is totally eliminated Lower risk of ELECTRICAL SHOCK or shorting. Convenience. Wireless energy transfers can potentially recharge the mobile phones without chords.
  • Disadvantages Wireless transmission of the energy causes some drastic effects to human body, because of its radiation Process is of high cost.
  • FUTURE SCOPE In future RECTENNA is used to produce large-scale power from microwaves beam . This technology is also applicable for electronic gadgets which work on batteries and thus saves electricity. Currently researches are going on, to implement this technology for laptops.
  • Conclusion Thus this paper successfully demonstrates a method of using the power of microwave to charge mobile phones without use of wired chargers.