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wireless charging of mobilephones using microwaves

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wireless charging of mobilephones using microwaves

  1. 1. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 1
  2. 2. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 2
  3. 3. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 3  WHAT IS SPECTRUM:-A band of colours produced by separating into parts with different wavelength.  The spectrum which contains electric field and magnetic field having rectangle to each other is know as electromagnetic spectrum.  The frequency range from 2GHz to 300GHz which is allowed to transmit in is called microwave spectrum.
  4. 4. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 4  Microwave means the frequency which travels a large distance in a µms.  Microwaves are good for transmitting information from one place to another because microwave energy can penetrate haze, light rain and snow, clouds, and smokes.  The wave length of this can be measure in centimeters.  Microwave means the frequency which travels a large distance in a µms.  Microwaves are good for transmitting information from one place to another because microwave energy can penetrate haze, light rain and snow, clouds, and smokes.  The wave length of this can be measure in centimeters.
  5. 5. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 5
  6. 6. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 6  In the output side we use a important device that is MAGNETRON which is gives high power output which is required in communication.  There is a cavities in the input side which is controls the output frequency.  A circulator is a another part of the transmitter side which helps to transmit the microwave from transmitter side to receiver side.  In the output side we use a important device that is MAGNETRON which is gives high power output which is required in communication.  There is a cavities in the input side which is controls the output frequency.  A circulator is a another part of the transmitter side which helps to transmit the microwave from transmitter side to receiver side.
  7. 7. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 7  In the receiver side we used two important device. One is rectenna and other is a simple sensor circuit.  The rectenna is used to convert the microwave energy into DC electricity.  A simple rectenna can be constructed from a Schottky diode placed between antenna dipoles.  The diode rectifies the current induced in the antenna by the microwaves.  In the receiver side we used two important device. One is rectenna and other is a simple sensor circuit.  The rectenna is used to convert the microwave energy into DC electricity.  A simple rectenna can be constructed from a Schottky diode placed between antenna dipoles.  The diode rectifies the current induced in the antenna by the microwaves.
  8. 8. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 8 THE WHOLE SETUP LOOKS LIKE THIS:-
  9. 9. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 9  The study is done that use of bridge is better than a single Schottky diode.  But this purpose is achieved low cost microwave rectifier with single Schottky diode for low and high power level has a good performance.  Here the input impedance is matching with the frequency 2.45GHz and increase the sensitive at low level of power.  The study is done that use of bridge is better than a single Schottky diode.  But this purpose is achieved low cost microwave rectifier with single Schottky diode for low and high power level has a good performance.  Here the input impedance is matching with the frequency 2.45GHz and increase the sensitive at low level of power.
  10. 10. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 10  It is a simple circuit, which detects if the mobile phone receives any message signal.  The sensor circuit is required as the phone has to be charged as long as the user is talking.  Here a simple powerful F to V converter LM2907 is used to serve our purpose, which is act as a switch for triggering rectenna circuit to ON.  Thus the mobile phone beings to charge using the microwave power.  It is a simple circuit, which detects if the mobile phone receives any message signal.  The sensor circuit is required as the phone has to be charged as long as the user is talking.  Here a simple powerful F to V converter LM2907 is used to serve our purpose, which is act as a switch for triggering rectenna circuit to ON.  Thus the mobile phone beings to charge using the microwave power.
  11. 11. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 11 1.The general block diagram of LM2907 is given bellow...
  12. 12. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 12  This paper successfully demonstrates a novel method of using power the microwave to charge the mobile phones without the use of wired chargers.  The use of rectenna and a sensor in a mobile phone could provide a new dimension in the revelation of mobile phone.  This paper successfully demonstrates a novel method of using power the microwave to charge the mobile phones without the use of wired chargers.  The use of rectenna and a sensor in a mobile phone could provide a new dimension in the revelation of mobile phone.
  13. 13. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 13  http://www. Seminar projects. COM Thread/wireless -charging-of-mobile-phone-using microwave? page-3# iXzz2jdAvagH6  http://www. Seminar projects. COM Thread/wireless -charging-of-mobile-phone-using microwave? page-3# iXzz2jdAvagH6
  14. 14. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 14 COLLECTED & DESIGNED by SAMARENDRA TRIPATHY
  15. 15. UCPENGINEERINGSCHOOL,BERHAMPUR-10 Department of Electronics and Tele Communication Engineering Roll No : 3046 15COLLECTED & DESIGNED By SAMARENDRA TRIPATHY

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