Wireless charging

WIRELESS CHARGING OF MOBILEPHONES USING MICROWAVES

NEED OF W.C.LIGHT & MICROWAVESTHE MICROWAVE REGION TRANSMITTER DESIGN RECEIVER DESIGN RECTENNA PROCESS OF RECTIFICATION SENSOR ADVANTAGES DISADVANTAGES CONCLUSION REFERENCES

CONTENTS

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.

NEED OF WIRELESS CHARGING

Wire+Less

What Is Wireless Charging…?

How It Is Done……?

Using Micro Waves

Because These Can Penetrate Haze Rain and Snow Clouds Smoke

Why Microwaves…???

Frequency Selection…!

S Band Of Spectrum (ISM)

Photons

Wavelength Of Light

EM waves

LIGHT &Microwaves

THE ELECTROMAGNETIC SPECTRUM

THE MICROWAVE REGION Here we have selected the license free 2.45 GHz ISM band

for our purpose

Transmitter And Receiver

TRANSMITTER

The MAGNETRON is a self-contained microwave oscillator that operates differently from the linear-beam tubes, such as the TWT and the klystron.

Electron beam Energy

Microwave Energy

Cross Field Device

Magnetron

Impedance Matching

Transmission

 THE SLOTTED WAVEGUIDE ANTENNA

Rectenna:-

Receiver

Microwave Energy

DC Energy

RECTENNA

Schottky Barrier Diode Low Pass Filter

Small Voltage Drop

Higher Switching Speed

Low Noise Index

Why Schottky Diode….???

SENSOR

F V

Detection of Message Signal Triggering The Rectenna GSM Frequency In INDIA (900MHz Or 1800MHz)

A Schottky barrier diode is formed by connecting a metal with a semiconductor.  

The semiconductor material of metal generally is chosen from different metals such as molybdenum, chromium, platinum and tungsten.

This diode does not has minority carriers, its speed is much faster, so its reverse recovery time(Trr) is very short and shorter than 10 ns.

Schottky Diode

The need of different types of chargers by different manufacturers is totally eliminated

Lower risk of ELECTRICAL SHOCK or shorting.ConvenienceWireless energy transfer can potentially recharge the

mobile phones without chords

Advantages

The transmitter and receiver also should be very powerful devices as the distance increases.

Slower Charging.Wireless transmission of the energy causes some drastic

effects to human body, because of its radiation.More costly.  Practical possibilities are not yet applicable as there is no

much advancement in this field.

Disadvantages

Thus 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.

A novel use of the rectenna and a sensor in a mobile phone could provide a new dimension in the revelation of mobile phone.

CONCLUSION