Microwave Power Transmission And Reception
Current Design of Rectenna.
Advantage of Using Microwaves For Wireless
System Losses Of Wired Electricity
Advantages Of Wireless Electricity
Disadvantages Of Wireless Electricity
Issues And Conclusions.
•Wireless Electrical Transmission as the name shows
is the Transmission of Electrical Energy without
wires to any place on Earth. Even to the most remote
•The Electrical energy is first converted into
Microwaves then beamed to a Geosynchronous
satellite and Beamed back on Earth where needed
and converted back to electrical energy. Where it can
be used to power Electrical Equipments.
An electric current flowing through a conductor, such as a
wire, carries electrical energy. When an electric current passes
through a circuit there is an electric field in the dielectric
surrounding the conductor; magnetic field lines around the
conductor and lines of electric force radially about the
Current circuit, if the current is continuous, the fields are
constant; there is a condition of stress in the space surrounding
the conductor, which represents stored electric and magnetic
energy, just as a compressed spring or a moving mass represents
stored energy a direct
Nikola Tesla (1856-1943) The Father of Wireless
Tesla's many inventions include
(1890) and the Tesla coil
(1891), a transformer with
important applications in the
field of radio communications
Wireless transmission of power and energy
demonstration during his 1891 lecture on high
frequency and potential.
Tesla's Wardenclyffe plant on Long Island in 1904. From
this facility, Tesla hoped to demonstrate wireless
transmission of electrical energy across the Atlantic
• Alternating Current.
• Wireless Power Transmission Experiments at
In 1899 Nikola Tesla was able to
light lamps over 25 miles away without using wires. Also
the high frequency current of tesla coil, could light lamps
filled with gas (like Neon).
1940s to Present
• World war II developed ability to convert energy to
microwave using magnetron but no method to convert
microwave back to electricity.
• In 1964 William. C Brown demonstrated a Rectenna
which would convert Microwaves Power to Electricity.
Wireless Electricity Transmission And
Reception Using Microwaves
Microwave Power Transmission And Reception
Microwaves generated using the Magnetron from the base station
can be received at any location on Earth with the help of
Geosynchronous Receiving and Transmitting Satellites.
Advantages of Low Orbit And Geosynchronous Satellites:
* These satellites will use microwaves to beam power to the
receiving station and mobile power receiving devices.
* Since The low Orbit Microwave Beam Would spread less, the
ground based Rectenna could be smaller.
Recent Developments Suggest that power could be sent to
Earth using Laser also.
The power can be received at Rectenna which will be located on
Earth, Comprising a mesh of dipoles and diodes for absorbing
microwave energy from a transmitter and converting it back into
electrical power. 95% of the Microwave Beam will fall on the
Location of Rectenna : The Rectenna should be located near
• 5000 Mw Receiving Station (Rectenna).
This station is about a Mile and Half long.
• The Rectenna Would be Visually Transparent so that it
would not interfere with Plant life.
Advantages of Using Microwaves for
Wireless Electricity Transmission
High Efficiency Up to 85% .
Power Level is Well Below International safety standard.
Beam is far below the lethal levels of concentrations even
for a prolonged exposure.
Frequency is up to 2.45 GHz of the Micro Beam.
Retro-directive Beam Control capability.
No Air Or water Pollution is Created.
During Generation power can be Beamed to the location
Where it is needed.
We don’t have to invest in a large Electrical Grid.
If Microwave Beams Carrying power could be beamed
uniformly over the earth they could power cell phones, but
the antenna length should be 25-30 cm square.
System Losses Of Wired Electricity Transmission
Electricity Grid 32.7 GJ
We lose, on average, 80% of the
energy we extract when using it for
Advantages Of Wireless Electricity Transmission
• Power Loss is very less as compared to Wired
There is no need of Transmission Lines.
Health and Environmental Experiments claim
that Wireless Electricity Transmission Using
Microwaves and laser is safe.
Disadvantages of wireless Electricity
• The Size of Rectenna will be Massive.
• Would Require a Network of hundreds of
• The Cost of this Prototype Project Will Be
$74 Billion approx.
• Interference with other Electronic Devices
will be there.
• Who will Fund?
NASA: Funding The research, in charge of space flight
for the United States Of America.
NASA: Would be launching the satellites and doing
• More Reliable Than Ground Based Solar Power
• More Reliable Than Wired Electricity Transmission.
• In Order To Have Wireless Electricity Transmission To
Become a Reality, Following Things Have To Happen:
#Cheaper Launch Prices.
#Involvement Of The Private Sector.