BY, P.SAI KAMAL, ECE 3 RD YR,10BA1A0443 WIRELESS CHARGING USING MICROWAVES
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BY,P.SAI KAMAL,ECE 3RD YR,10BA1A0443
WIRELESS
CHARGING
USING
MICROWAVES
HistoryFather of wireless mesh research projects
MIT media labs in 1997
Electro magnetic spectrum
World’s Most Common Frequency Bands
Parts Transmitter
RF cable
Slotted wave guide antenna
Sensor
Receiver (Rectenna)
TRANSMITTER OUTER DESIGN
High power microwave oscillator
Special kind of vacuum tube
Efficiency 50 to 80 %
TRANSMITTER INNER DESIGN
Uses CROSSED-ELECTRON & MAGNETIC fields
RF cableDesigned to work at RF (multi megahertz range)
High data rate wireless transceivers
Slotted waveguide antennaMicrowave radar applications
Direct emission through slots
SensorMicrowave sensors
Raises beep alarm in silent mode
RectennaInvented by William c . Brown in 1964
Dipole antenna with RF diode
Schottky barrier diode
Principle of operation
LM 2907 (F to V converter)
Advantages
Separate chargers elimination
Charges “anywhere anytime” within the location of waves
Disadvantages
Keeping in pocket – “Central nervous system”
Effect on “children”
Present applicationsWIRELESS HOME
NOKIA Lumia 920
IM NEWLY BORN
Present applications
MOJO100
0
Rs
Present applications
MOPAR
Other modesSamsung E1107 Crest Solar powered mobile phone
Future Proposal
Conclusion
Novel method of using “power of microwaves”
Can carry in case of “devoid facilities”
QUERIES
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