1. BY,
P.SAI KAMAL,
ECE 3RD YR,10BA1A0443

2. History
Father of wireless mesh research projects
MIT media labs in 1997

3. Electro magnetic spectrum

4. World’s Most CoMMon frequenCy
Bands

5. Parts
Transmitter
RF cable
Slotted wave guide
antenna
Sensor
Receiver (Rectenna)

6. TRANSMITTER OUTER DESIGN
High power
microwave oscillator
Special kind of
vacuum tube
Efficiency 50 to 80
%

7. TRANSMITTER INNER DESIGN
Uses CROSSED-
ELECTRON &
MAGNETIC fields

8. RF cable
Designed to work
at RF (multi
megahertz range)
High data rate
wireless transceivers

9. Slotted waveguide antenna
Microwave radar
applications
Direct emission
through slots

10. Sensor
Microwave sensors
Raises beep alarm
in silent mode

11. Rectenna
Invented by William c
. Brown in 1964
Dipole antenna with
RF diode

12. Schottky barrier diode

13. Principle of operation

14. LM 2907 (F to V converter)

15. Advantages
Separate chargers elimination
Charges “anywhere anytime”
within the location of waves

16. Disadvantages
Keeping in pocket – “Central
nervous system”
Effect on “children”

17. Present applications
WIRELESS HOME

18. NOKIA Lumia 920
IM
NEWLY
BORN

19. Present applications
MOJO

20. Present applications
MOPAR

21. Other modes
Samsung E1107 Crest Solar powered mobile phone

22. Inductive charging

23. Inductive charging

24. Future Proposal

25. Conclusion
Novel method of using “power of microwaves”
Can carry in case of “devoid facilities”

26. QUERIES