WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES

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By: pratikmhatre79 (66 month(s) ago)

can u plz mail me dis contens as i m also working on rectenna pratikmatre@gmail.com

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PowerPoint Presentation:

WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES Presented by AISHWARYA C EC-8A ROLL NO 6 Under the guidance of Mr.AJI GEORGE Asst.Prof.ECE DEPT

CONTENTS:

CONTENTS WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 2

INTRODUCTION :

INTRODUCTION A new proposal has made recharging of the mobile phones is done automatically as you talk in your mobile phone ! The recharging of the mobile phones is independent of their manufacturer and battery make . 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 3 3/11/2014

OBJECTIVE:

OBJECTIVE The main objective of this current proposal is to make the recharging of Mobile phones independent of their manufacturer and battery. A rectenna & a filter is added to the ordinary mobiles during manufacturing time…. Thus the more you talk, the more is your mobile phone charged!!!!!!! This is new isn’t?!! WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 4

ELECTROMAGNETIC SPECTRUM:

ELECTROMAGNETIC SPECTRUM WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 5

MICROWAVE REGION :

MICROWAVE REGION Microwave wavelength range approximately from 1mm (thickness of pencil lead) to 30cm (about 12 inches). The microwave region in electromagnetic spectrum ranges from 0.3cm to 300cm. Microwave region give the information about the temperature of the object that emitted microwaves. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 6

WHY WIRELESS CHARGING USING MICROWAVES ?????:

WHY WIRELESS CHARGING USING MICROWAVES ????? Microwaves are good for transmitting information from one place to another ( because it penetrate haze , light rain , snow , clouds etc…). It has shorter wavelength than remote sensing. Microwave radiation are considered harmless except for people with pace makers . WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 7

FREQUENCY SELECTION:

FREQUENCY SELECTION The frequency selection is another important aspect in transmission. Here we have selected the license free 2.45 GHz( Industrial, Scientific and Medical ) ISM band for this purpose. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 8

PowerPoint Presentation:

WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 9

BLOCK DIAGRAM:

BLOCK DIAGRAM WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 10

PRINCIPLE OF OPERATION :

PRINCIPLE OF OPERATION 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. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 11

TRANSMITTER DESIGN :

TRANSMITTER DESIGN The MAGNETRON is a self-contained microwave oscillator that operates differently from the linear-beam tubes, such as the TWT and the klystron. Cross field and magnetic field are used to produce high-power output. ELECTRON BEAM ENERGY MICROWAVE ENERGY WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 12

SLOTTED WAVEGUIDE ANTENNA:

SLOTTED WAVEGUIDE ANTENNA It is used as ideal power transmitter (because of its high aperture efficiency >95%) . High impedance matching It has 64 slots of power uniformly through free space to the rectenna. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 13

RECEIVER DESIGN :

RECEIVER DESIGN The basic addition to a mobile phone is to be rectenna. Its elements are usually arranged in a mesh pattern . A simple rectenna is constructed by using a schottky diode . WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 14 Microwave Energy DC Energy

SCHOTTKY DIODE :

SCHOTTKY DIODE Scottky Diode • A Schottky barrier diode is formed byconnecting a metal with a semiconductor. • The semiconductor material of metalgenerally is chosen from different metals suchas molybdenum, chromium, platinum andtungsten. • This diode does not has minority carriers, itsspeed is much faster, so its reverse recoverytime(Trr) is very short and shorter than 10 ns.                                                                                                                                                                                                           • A Schottky barrier diode is formed by connecting a metal with a semiconductor . •The semiconductor material 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 WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 15

RECTENNA :

RECTENNA Its nothing but the combination of rectifier and antenna .. Antenna is to receive the microwave signal and it just feed the signal to rectifier . Rectifier is to convert the microwave energy to electricity. 3/11/2014 16 WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES

SENSOR :

SENSOR The operating frequency of the mobile phone is 900MHz or 1800MHz for communication . LM2907-a simple F to V converter used as it operates between this 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. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 17

IMPLEMENTATIONS:

IMPLEMENTATIONS 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 the phone. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 18

ADVANTAGES:

ADVANTAGES One can carry their mobile phones any place even to a remote village. The use of wired chargers are eliminated. The phone can be charged at any place and any time. Electricity can be saved. The more you talk the more you get charged. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 19

DISADVANTAGES:

DISADVANTAGES Radiation problem may occur . Network traffic may cause problem in charging. Rate of charging is of minute range . Charging depends on network coverage. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 20

FUTURE SCOPE:

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. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 21

CONCLUSION:

CONCLUSION A novel use of RECTENNA and a SENSOR in mobile phone could provide a new dimension in the revolution of mobile phones. Thus a great advantage is to carry their mobile phones to any place is devoid of facilities for charging. WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 22

REFERENCE:

REFERENCE [1] Piyush Kumar, “Wireless Charging Of Mobile Phones Using Microwaves”, International Journal of Engineering Science and Innovative Technology (IJESIT) Volume 2, Issue 5, pg: 215-218, ISSN: 2319-5967 , September 2013. [2] Dimple , Divyanshi Singh, “Wireless Charging Of Mobile Phones Using Microwaves”, International Journal Of Electrical & Electronics Engineers(IJEEE), Vol. No.1, Issue No. 1, pg: 38-45, January-June, 2013 [3] www.nokialumia.com [4] www.wikipedia.org WIRELESS CHARGING OF MOBILE PHONES USING MICROWAVES 3/11/2014 23

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