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i
ABSTRACT
Mobile phones becoming a basic part of life, the recharging of mobile phone batteries
have always been a proble...
ii
CONTENTS
Title Page no.
Abstract i
Table of contents ii
List of figures iii
List of tables iv
1. Introduction 1
2. Elec...
iii
LIST OF FIGURES
Fig. no. Title name Page no.
2.1 Electromagnetic spectrum 3
2.2 Microwave Region 4
3.1 Power Transmiss...
iv
LIST OF TABLES
Table no. Title name Page no.
2.1 Frequency Ranges 5
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3 abstract report

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3 abstract report

  1. 1. i ABSTRACT Mobile phones becoming a basic part of life, the recharging of mobile phone batteries have always been a problem. The mobile phones vary in their talk time and battery standby according to their manufacture and batteries. All these phones irrespective of their manufacturer and batteries have to be put to recharge after the battery has drained out. The main objective of this current proposal to make their charging 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. This done by using microwaves. The microwave signal is transmitted from the transmitter along with the message signal using special kind of antennas called slotted waveguide antenna at a frequency is 2.45GHZ. There are minimal additions, which have to be made in the mobile handsets, which are the addition of a sensor, a rectenna and a filter. With the above setup, the need for separate chargers for mobile phones is eliminated and makes charging universal. Thus the more you talk, the more is your mobile phone charge. With this proposal the manufacturers would be able to remove the talk time and battery standby from their phone specifications.
  2. 2. ii CONTENTS Title Page no. Abstract i Table of contents ii List of figures iii List of tables iv 1. Introduction 1 2. Electromagnetic Spectrum 2 2.1 Microwave Region 3 2.2 Frequency Selection 4 3. Wireless Power Transmission 5 3.1 Microwave Generator 6 3.2 Transmitting Antenna 6 4. Block Diagram 7 5. System Design 7 6. Transmitter Design 7 6.1 Magnetron and its Working 8 6.2 Slotted Waveguide Antenna 9 7. Receiver Design 9 7.1 Rectifying Antenna 10 7.2 Schottky Barrier Diode 11 8. Sensor Circuitry 12 9. Future Scope 13 10. Advantages 13 11. Disadvantages 13 12. Conclusion 14 13. References 15
  3. 3. iii LIST OF FIGURES Fig. no. Title name Page no. 2.1 Electromagnetic spectrum 3 2.2 Microwave Region 4 3.1 Power Transmission System Block Diagram 6 6.1 Magnetron 8 6.2 Resonant cavity magnetron oscillator 8 6.3 Slotted Waveguide Antenna 7 6.4 Waveguide 9 7.1 Rectenna 10 7.2 Rectenna circuitry 11 6.1 Sensor (LM2907) 12
  4. 4. iv LIST OF TABLES Table no. Title name Page no. 2.1 Frequency Ranges 5

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