Abstract:In the present paper the various technologies available so far for wireless transmission of electricity and theneed for a Wireless System of Energy Transmission is being discussed to find its possibility in actual practices, theiradvantages, disadvantages and economical consideration. Thispaper is mainly concentrated on :(i) The most popular conceptknown as Tesla Theory,(ii) The microwave power transmission(MPT) called Solar power satellite, and(iii) The highly efficientfibre lasers for wireless power transmission.Many concepts, research papers, patents are available on wireless transmission of electricity but the commercial technologies are yet to be materialized. The paper also discussesthe possible ways to get useful and practical results out of all research carried out so far elsewhere.Microwave ovenmagnetron with electronics to control the output power. The output microwave power ranges from 50 W to 200 W at 2.45 GHz. A coaxial cable connects the output of the microwave source to a coax-to-waveguide adapter. This adapter is connected to a waveguide ferrite circulator which protects the microwave source from reflected power. The circulator is connected to a tuning waveguide section to match the waveguide impedance to the antenna input impedance. The slotted waveguide antenna consists of 8 waveguide sections with 8 slots on each section. These 64 slots radiate the power uniformly through free space to the rectenna. The slotted waveguide antenna is ideal for power transmission because of its high aperture efficiency Key words – Wireless transmission, Tesla theory, Microwave power transmission, Fiber lasers, Collaborative research.

1. PRESENTED BY : ABHISHEK JAISWAL
B-TECH ECE
PRIST UNIVERSITY
EMAIL ID : abhishekjaiswal590@gmail.com

2.  Wireless electrical transmission as the
name shows is the transmission of
electrical energy without wires to any
place on the earth .

4.  NICOLA TESLA invented radio and shown
us he is indeed “ THE FATHER OF
WIRELESS “.
 In 1964 WILLIAM C. BROWN demonstrated
a rectenna which could convert microwave
power to electricity .

5. INDUCTIVE COUPLING
• Very short distance transmission.
RESONANT INDUCTIVE
COUPLING
• Moderate distance transmission.
MICROWAVE ELECTRICITY
TRANSMISSION
• Long distance transmission.

6.  Here transfer of energy takes place by
electromagnetic coupling through a
process called mutual induction .
 Thismethod works only when receiver is
in close proximity to the transmitter .
 APPLICATIONS :-Wi-power technology .
 Electric toothbrush.
 Electromagnetic card reader.

7.  RIC function on the concept that if you
make two resonant objects of same
resonant frequency tends to exchange
energy efficiently , while interacting with
extraneous off resonant objects .
 Transmission range for this method is
nearly 5-10 meters .

8.  Microwavetransmission refers to the
technology of transmitting information or
power by the use of microwaves waves .

9.  MICROWAVE GENERATOR
 TRANSMITTER ANTENNA
 RECTENNA

11.  MERITS :
 High efficiency
 Low cost
 high transmission integrity
 less power loss
 areas where needs of electric and
no method of delivering

12.  DEMERITS :- Economic impact the concept
looks costly initially .
 BIOLOGICAL IMPACT :- Calculating the
circulating relative power , it was found
that the frequency is small and such a
frequency is very biological compatible .

13.  Generating power by placing satellites
with giant solar array in geo synchronous
earth orbit and transmitting the power as
microwaves to the earth known as solar
power satellites (SPS) .
 Moving targets such as fuel free
airplanes, fuel free electric vehicles ,
moving robots and fuel free rockets .

14. A SPS (solar power station/satellite ) is a
gigantic satellite design as an electric
power plant and transmits the electricity
via microwave to a receiving site on the
earth by using phased array antennas .
FEATURES OF SPS
 Pollution free power plant .
 Power at any time of the day and
night.
 Power regardless of the weather .

15.  The transmission of power without wires
is not a theory or a mere possibility , it
is now reality.
 The electrical energy can be economically
transmitted without wires to any
terrestrial distance .
 Wireless transmission of electricity have
tremendous merits like high transmission
integrity and low loss .