The main objective of this current proposal is to make the recharging of the mobile phones independent of their manufacturer and battery make. In this paper a new proposal has been made so as to make the recharging of the mobile phones is done automatically as you talk in your 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

1. A Seminar on
“WIRELESS CHARGING OF MOBILE
PHONES”
Submitted by:
ShahrukhJaved

2. CONTENTS
ABSTRACT
INTRODUCTION
THE MICROWAVE REGION
TRANSMITTER DESIGN
RECEIVER DESIGN
PROCESS OF RECTIFICATION
SENSOR CIRCUITRY
CONCLUSION
REFERENCES

3. ABSTRACT
The main objective of this current proposal is to make the recharging of the mobile phones independent of
their manufacturer and battery make.
In this paper a new proposal has been made so as to make the recharging of the mobile phones is done
automatically as you talk in your 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

4. MICROWAVE REGION
Here we have selected the license free 2.45 GHz ISM band for our purpose

5. TRANSMITTER DESIGN
• Magnetron is a high power microwave oscillator
and it is used in microwave oven and radar
transmitter.
• Magnetron is capable to deliver more power than
reflex klystron or gunn diode
• This magnet is setup to affect the path of travel of
electrons that are in transit from cathode to the
anode plate.

6. RECIEVER DESIGN

7. RECTENNA
A rectifying antenna called a rectenna
receives the transmitted power and converts
the microwave power to direct current (DC)
power.
This demonstration rectenna consists of 6
rows of dipoles antennas where 8 dipoles
belong to each row. Each row is connected to
a rectifying circuit which consists of low pass
filters and a rectifier.

8. THE PROCESS OF RECTIFICATION
Microwave energy transmitted from space to earth apparently have
the potential to provide clean electrical power on a very large scale.
The aim of the study to make a low cost power rectifier for low & high
power levels at a frequency of 2.45GHz.
The schottky diode microwave rectifying circuit has the efficiency is
greater than 90%.

9. ADVANTAGES
Use of separate chargers is eliminated.
Electricity is saved.
The phone can be charged anywhere anytime.
Wireless energy transfer can potentially recharge the mobile
phones without chords.
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.

10. APPLICATIONS

11. CONCLUSION
Finally this paper successfully demonstrates a novel
method of using the power of the microwave to charge the
mobile phones without the use of wired chargers.
Thus this method provides great advantage to the mobile
phone users to carry their phones anywhere even if the
place is devoid of facilities for charging.

12. Questions

13. THANK YOU ALL