WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVE

BYPRIYANKA V1ST SEM ,E & C , MtechPONDICHERRY UNIVERSITY

INTRODUCTION MICROWAVE REGION BLOCK DIAGRAM TRANSMITTER DESIGN RECEIVER DESIGN IMPLEMENTATION ADVANTAGES DISADVANTAGES FUTURE SCOPE CONCLUSION

WIRELESS CHARGING

• Mobile phones becoming basic part of life • Recharging of mobile phones is a big problem • Objective—to recharge any mobile phone independent of manufacturer and battery make • Achieved by recharging battery while talking using microwaves

INTRODUCTION

MICROWAVE REGION

• Microwaves are good for transmitting information from one place to another• It is because microwave energy can penetrate rain and snow, clouds, and smoke

BLOCK DIAGRAM

TRANSMITTER DESIGN

• It is a self-contained microwave oscillator that operates different from linear oscillator.

• Cross field and magnetic field are used to produce high-power output

SLOTTED 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

RECEIVER DESIGN

• The basic addition to the mobile phone is going to be the rectenna and sensor

• Rectenna = Rectifier + Antenna. • A rectifying antenna called a rectenna receives the

transmitted power and converts the microwave power to direct current (DC) power.

SENSOR

• LM2907-a simple F to V converter used as it operates specified range .

• To trigger the rectenna circuit to ON and the mobile begins to charge using the microwave power automatically.

• This is required, as the phone has to be charged as long as the user is talking.

IMPLEMENTATION

• NOKIA,SAMSUNG,APPLE has launched this wireless charging technology in its new recent mobile model .

• Energy efficient charges of all size and shape to match our phone.

• There are all quiet compactable, which means we can use any charges are like.

ADVANTAGES

• One can carry their mobile phones any place to a remote villages.

• The use of wired charges are eliminated. • Electricity can be saved. • The more you talk more you get charged.

DISADVANTAGES

• Wireless transmission of the energy causes some effects to human body, because of its radiation.

• Network traffic may cause problems in charging.

• Charging depends on network coverage. • Process is 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 works on batteries and thus save electricity.

• Currently researches are going on, to implement this technology for laptops.

CONCLUSION

• A novel use of RECTENNA and a SANSOR in mobile phone could provide a new dimension in the revelation of mobile phones.

• Thus a great advantage is to carry their mobile phones to any place is devoid of facilities for charging.

REFERENCE

• www.slideshare.com• www.wikipedia.org • www.seminarsonly.com • Theodore .S.Rappaport, “Wireless

communications principles and practice”.