SUBHANKAR GHOSH (16900313109) SUBHAJIT CHOWDHURY (16900313107) Under the Guidance of PROF. SANJIB MITRA Department Of Electronics and Communication Engineering ACADEMY OF TECHNOLOGY 07/05/22 1 AOT-ECE
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SUBHANKAR GHOSH (16900313109)
SUBHAJIT CHOWDHURY (16900313107)Under the Guidance of
PROF. SANJIB MITRA
Department Of Electronics and Communication Engineering ACADEMY OF TECHNOLOGY
05/01/23 1AOT-ECE
Outline
IntroductionHistoryMicrowave Power TransmissionRectennaApplicationsAdvantage & DisadvantageSafety ConcernConclusion
05/01/23 2AOT-ECE
INTRODUCTIONNikola Tesla work in the early 20th century
Transfer of energy from a source to a receiver done by Physical connection.
Transfer of power over the microwave band is known as MPT
Wire- less device, capable of being remotely powered
Rectenna is used to receive the power
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Nikola TeslaInnovations:
Alternating current
Wardenclyffe
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How the power gets to Earth
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MicrowavesBeam Frequency
Retro directive beam control capability
Power level is well below international safety standard
Is extensively used for point-to-point telecommunications
Easily focused into narrower beams than radio waves05/01/23 6AOT-ECE
Microwave vs. Laser Transmission
MicrowaveMore developed
High efficiency
Not dangerous
Cause interference
LaserRecently developed
Low efficiency
Dangerous
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Block Diagram Of MPT
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This is the AC power
supply
AC Power Outlet
Power Conversion
This converts the AC power to a microwave power signal
Microwave Transmitter
This transmits the microwave
power signal
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RectennaPower Conversion
PowerRegulator
Remote Device
This converts the microwave power
signal to DC power signal
This regulates DC voltage
level
Remote Device uses this DC power the same way it uses a
battery
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From the Satellite
Microwave transmitter
Received at a “rectenna”
Laser can also be used.
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Rectenna (Rectifier + Antenna)
Microwaves efficiency
More Space
Beam falling on the rectenna
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Rectenna SpecificationsBandwidth of rectenna
Rectenna impedance matching
Rectenna testing
Rectenna Efficiency
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Rectenna Design
Wire mesh reflector
Magic carpet
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ApplicationsElectronic portable devices
Electric Vehicles
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Applications contd..Aerial Vehicles and Solar Power Satellites(SPS
2000)
Satellite solar-power model
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Rectenna DevelopmentProject is Developed
in Japan
low cost model
8 Countries
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Advantages Eliminates cables uses
Mobile uses
Less Cost
Broader connectivity
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DisadvantagesFactors as weather and physical objects Longer distances
Rectenna Issues-a. Sizeb. Locationc. Health Issues
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Safety Concern
Human exposure
Magnetic beam must be concentrated on the antenna
the charging of the EV 05/01/23 22AOT-ECE
Conclusion
“You don’t need cables, pipes, or copper wires to receive power. We can send it to you like a cell phone call – where you want it, when you want it, in real time. We can expect with certainty that in next few years wonders will be brought by its applications if all the conditions are favorable”.
-- Dr. Neville of NASA
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