Wireless charging of mobile phones using microwaves

6,508 views

Published on

0 Comments
7 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
6,508
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
867
Comments
0
Likes
7
Embeds 0
No embeds

No notes for slide

Wireless charging of mobile phones using microwaves

  1. 1. Mobile Phone Charging Using Microwaves BY m.NAVEEN KUMAR M.Tech_vlsi 13241d5710 griet 1
  2. 2. Contents • • • • • • • Introduction Transmitter design Receiver design Advantages Disadvantages Conclusion References
  3. 3. Introduction The electromagnetic spectrum:  What is EM spectrum?  How EM spectrum is produced?  Example… Microwave region:  What is Microwave region?  Why we go for Microwave communication?  Selection of frequency…
  4. 4. The electromagnetic spectrum  What is EM spectrum?
  5. 5. The electromagnetic spectrum  How EM spectrum is produced?
  6. 6. The electromagnetic spectrum  Example
  7. 7. What is Microwave region Wavelength : 1 mm-30 cm
  8. 8. Why we go for Microwave communication?  Microwaves are good for transmitting information from one place to another ( because it penetrate haze , light rain , snow , clouds etc…).
  9. 9. Selection of frequency  The frequency selection is another important aspect in transmission. Here we have selected the license free 2.45 GHz(Industrial, Scientific and Medical) ISM band for this purpose.
  10. 10. Block diagram Slotted waveguide Antenna mobile signal circulator Transmitting station with the microwave transmitter sensor RF cable Rectenna waveguide
  11. 11. Magnetron
  12. 12. Slotted waveguide antenna
  13. 13. sensor circuit VOUT = fIN VCC Zener regulated frequency to voltage converter Rx Cx
  14. 14. Rectenna block diagram
  15. 15. rectenna
  16. 16. Rectenna array
  17. 17. Advantages Only one microwave transmitter can serve to all the service providers in that area. The need of different types of chargers by different manufacturers is totally eliminated. Mobile get charged as we make call even during long journey.
  18. 18. Disadvantages Wireless transmission of the energy causes some drastic effects to human body, because of its radiation Practical possibilities are not yet applicable as there is no much advancement in this field. Process is of high cost
  19. 19. Conclusion Thus this paper successfully demonstrates a method of using the power of microwave to charge mobile phones without use of wired chargers.
  20. 20. References Theodore.S.Rappaport , “Wireless Communications Principles and Practice”. Tae-Whan yoo and Kai Chang, "Theoretical and Experimental Development of 10 and 35GHz rectennas" IEEE Transaction on microwave Theory and Techniques, vol. 40.NO.6.June.1992. 'Microwave and RF circuits: analysis,synthesis, and design', Artech House, Norwood, MA,1993.
  21. 21. 21

×