Wireless charging of mobile phones by using microwaves
Post on 19-Aug-2014
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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
A Presentation Seminar
On Wireless Charging Of Mobile Phones Using Microwaves
Contents INTRODUCTIONPRINCIPLE OF OPERATIONTRANSMITTERRECEIVER IMPLEMENTAIONADVANTAGESDISADVANTAGESCONCLUSION
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
Wireless Charging Of Mobile Phones Using Microwaves
Principle of Operation & Block Diagram
Transmitting station with the microwave
transmitter
sensor
Rectenna
RF cable
circulator
waveguide
Slotted waveguideAntenna
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
EnergyDC 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 eliminatedLower 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.
Any Queries..??
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