WIRLESS CHARGINGOF

MOBILE PHONES I.V.S SIRISHA(III CSE)

S.DURGA SIRISHA(III CSE)

OVERVIEW:ABSTRACT

INTRODUCTION

METHODS OF CHARGING

WORKING OF WIRELES CHARGING

BLOCK DIAGRAM

NEED OF WIRELESS CHARGING

APPLICATIONS

ADVANTAGES

CONCLUSION

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.

INTRODUCTION

Smartphone are changing the way we live. With each new model, we

are used to getting more processor speed, new features, and entire new

ways of using them. Despite increased capabilities, battery life simply

hasn’t kept up.

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.

There are three types of wireless charging :-

• Resonance Charging

• Inductive Charging

• Radio Charging

Methods of Wireless Charging

Resonance Charging :Two copper coils are used one attached to transmitter & another to

receiver.

Both coils are tuned to same electromagnetic frequency.

These coils when placed close to one It uses phenomenon of

“RESONANCE”, that causes an object to get energy when certain

frequency is applied.

Inductive Charging :

This method works on the principle of

“ELECTROMAGNETIC INDUCTION” where the charger device will

create an E.M field with alternating polarity using a coil of insulated

copper wire & a similar coil will be placed inside the mobile device

which will convert E.M field back to electric current there by charging

the battery.

Radio charging:

•This method is on the basis that Radio Waves are widely in use to transmit and receive cellular telephone, television, radio and Wi-Fi.

• A Radio wave once transmitted, propagates in all directions until it reaches an antenna tuned to proper frequency to receive it.

•A transmitter plugged in to a socket, generates radio waves, when the receiver attached to the device is set to the same frequency as the transmitter, it will charge the device’s battery .

Wireless chargers emit an alternating current via a transmitter coil, which then induces a voltage in the receiver coil found in the device.

Qi wireless charging pads are capable of charging Smartphone, tablets, Bluetooth headsets, cameras and portable power packs.

How does wireless charging work?

WORKING OF WIRELESS CHARGING SYSTEM

It works on the principle of Electromagnetic Induction.

Induction chargers typically use an induction coil to create an alternating

electromagnetic field from within a charging base station, and a second

induction coil in the portable device takes power from the electromagnetic

field and converts it back into electrical current to charge the battery.

Block Diagram of Wireless charging System

APPLICATIONS

To make the recharging of the mobile phones independent of

their manufacturer and battery make.

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.

NEED OF WIRELESS CHARGING

Use of separate chargers is eliminated.

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.

ADVANTAGES

CONCLUSION  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.

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.