This document discusses microwave power transmission (MPT) and rectennas. It provides an introduction to Nikola Tesla's early work transmitting power wirelessly in the 20th century. The document outlines the history of MPT and describes how microwaves can be transmitted from a source and received by a rectenna to power remote devices without wires. It discusses applications of the technology for powering vehicles, drones and satellites and the advantages of eliminating cables, as well as safety concerns over human exposure to microwave beams.

1. SUBHANKARGHOSH(16900313109)
SUBHAJIT CHOWDHURY
(16900313107)
Under the Guidance of
PROF. SANJIB MITRA
Department Of Electronics and Communication Engineering
ACADEMY OF TECHNOLOGY
10/07/16 1AOT-ECE

2. Outline
Introduction
History
Microwave Power Transmission
Rectenna
Applications
Advantage & Disadvantage
Safety Concern
Conclusion
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3. INTRODUCTION
Nikola 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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4. Nikola Tesla
Innovations:
Alternating current
Wardenclyffe
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5. How the power gets to Earth
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6. Microwaves
Beam 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 waves
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7. Microwave vs. Laser Transmission
Microwave
More developed
High efficiency
Not dangerous
Cause interference
Laser
Recently developed
Low efficiency
Dangerous
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8. Block Diagram Of MPT
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9. 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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10. Rectenna
Power
Conversion
Power
Regulator
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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11. From the Satellite
Microwave transmitter
Received at a “rectenna”
Laser can also be used.
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12. Rectenna (Rectifier + Antenna)
Microwaves efficiency
More Space
Beam falling on the rectenna
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13. 10/07/16 13AOT-ECE

14. Rectenna Specifications
Bandwidth of rectenna
Rectenna impedance matching
Rectenna testing
Rectenna Efficiency
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15. Rectenna Design
Wire mesh
reflector
Magic carpet
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17. Applications
Electronic portable devices
Electric Vehicles
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18. Applications contd..
Aerial Vehicles and Solar Power Satellites(SPS 2000)
Satellite solar-power
model
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19. Rectenna Development
Project is Developed in
Japan
low cost model
8 Countries
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20. Advantages
Eliminates cables uses
Mobile uses
Less Cost
Broader connectivity
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21. Disadvantages
Factors as weather and physical objects
Longer distances
Rectenna Issues-
a. Size
b. Location
c. Health Issues
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22. Safety Concern
Human exposure
Magnetic beam must be concentrated on the antenna
the charging of the EV
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23. 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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24. 10/07/16 24AOT-ECE