WIRELESS CHARGING OF MOBLIE PHONES USING MICROWAVES PRESENTED BY SARA FATIMA SHAGUFTA ECE-B,160313735048 1 ST YEAR DECCAN COLLEGE OF ENGINEERING AND TECHNOLOGY
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
WIRELESS CHARGING OF MOBLIE PHONES USING MICROWAVES
PRESENTED BY SARA FATIMA SHAGUFTA ECE-B,160313735048 1ST YEARDECCAN COLLEGE OF ENGINEERING AND TECHNOLOGY
CONTENTSINTRODUCTIONOBJECTIVEPRINCIPLE OF OPERATIONTRANSMITTERRECEIVERIMPLEMENTAIONADVANTAGESDISADVANTAGESFUTURE SCOPE
INTRODUCTION Mobile phones are now a basic part of
life.
Recharging of mobile phones is a big problem.
Objective—to recharge any mobile phone independent of manufacturer made battery. We are going to add just a rectenna & a filter to the ordinary mobiles during manufacturing time…
Achieved by recharging battery while talking using microwaves .
Thus the more you talk, the more is your mobile phone charged!!!!!!!
WHAT’S HAPPENING?? Microwave signal is transmitted from
transmitter along with message signal using slotted waveguide antenna at frequency 2.45 GHz
Charging made universal
THE MICROWAVE REGION
FREQUENCY SELECTION Select license free 2.45 GHz
Industrial, Scientific and Medical (ISM) radio bands
ISM bands are reserved internationally for non-commercial use of RF electromagnetic fields for industrial, scientific and medical purpose
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…).
has shorter wavelength than remote sensing.
PRINCIPAL OF OPERATION BLOCK DIAGRAM
TRANSMITTER SECTION IT CONSIST OF TWO
PARTS MAGNETOR ,SLOTTED
WAVEGUIDE ANTENNA Magnetron is a vacuum
tube oscillator that generates high-power electromagnetic signals in the microwave frequency range.
Magnetron is used to produce high-power output required in radar and communication equipment
SLOTTED WAVEGUIDE ANTENNA It is an Omni-
directional antenna Slotted antenna arrays
used with waveguides are popular antenna in navigation, radar and other high-frequency systems
Has high efficiency and gain of 13dB
RECEIVERS SECTION Basic additions to mobile phone Sensor,rectenna Simple yet powerful F to V
converter is LM2907 is used as sensor.
On the reception of the microwave signal ,the sensor circuitry directs rectenna circuit to ON
Rectenna circuit converts microwave energy to dc output
Mobile phone begins to charge using the microwave power as long as the user talks over cell phone.
What is Rectenna ?
Rectenna = Rectifier + Antenna.
ADVANTAGES Charging mobiles wirelessly
Saving time for charging
Wastage of power is less
The phone can be charged at any place and any time.
One can carry their mobile phones any place even to a
remote village.
Get charged as we make call during long journey
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 our phone.
They are all quiet compatable , which means we can use any chargers we like
DISADVANTAGES Radiation problems may
occur
Network traffic may cause problems in charging
Charging depends on network coverage
Rate of charging may be of minute range
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.
Related Documents
