It is the PPT for Engineering Students,",PLASMA ANTENNA."

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Plasma Antenna
Aijaz Ahmad
433/11
ECE 7th Sem.
NIT SRINAGAR

2. Contents:
 What is plasma?
 Plasma antenna
 Working of plasma antenna
 Classification of plasma antenna
 Characteristics/features
 Advantages
 Limitations
 Applications
 Development progress
 Conclusion
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3. WHAT IS PLASMA?
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 Plasma is similar to gas in which certain portion of particles are ionized.
 Plasma is formed when that much of energy is applied to gas at which its particles
ionize.
 Plasma is,therefore, considered as fourth state of matter.
 Because of ionized particles/carriers ,plasma is conductive.

4. Traditional Antenna:
 An antenna is a device used for the purpose of reception as well
as transmission of electromagnetic waves.
 Physically, an antenna is a collection of one or more conductors
called as its elements.
 It is sized to emit radiations at one or more selected
frequencies.
 Shape and size of conventional
antenna depends upon the area
of application
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5. Plasma Antenna
Plasma antennas are radio frequency antennas that employ
plasma as the guiding medium for electro-magnetic
radiations.
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 When the Gas is ionized to a
plasma state then it becomes
conductive, allowing radio
frequency (RF) signals to be
transmitted or received.

6. CLASSIFICATION OF PLASMA ANTENNAS
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PLASMA ANTENNA
GAS PLASMA
ANTENNA
SOLID STATE PLASMA
ANTENNA [ PSiAn ]
Nature of plasma
A gas is ionized to create
a plasma
Plasma is formed due to
cloud of electrons
Frequency range only upto 90GHz 1-300GHz
Size Large Compact

7. How Does Gas Plasma Antenna Works?
 When supply is given, gas gets ionized to
plasma.
 Plasma is energized.
 Behaves as a conductor.
 Generation of localized plasma.
 Plasma acts as a mirror.
 Reflects the beam.
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Generation of Signals from Plasma Column.

9. Working of PSiAn Antenna:
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 Employs thousands of diodes on a
silicon chip.
 Produces electron clouds when
charged.
 These act as mirrors and reflect
beam.
 Uses beam forming technology.
 Used for high frequencies.
 Smaller in size.
 Cheaper compared to gas plasma
antennas.

10. Traditional antenna vs Plasma antenna:
 Traditional antennas are bulkier and of large size as
compared to plasma antennas.
 Traditional antennas work at lower frequencies whereas
plasma antennas at higher.
 Traditional antennas have ringing effect whereas plasma
antennas don’t have.
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11. Features:
 Higher power.
 Higher efficiency.
 Enhanced bandwith.
 Perfect reflector.
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12. ADVANTAGES
 Lighter than conventional antennas.
Compact and so portable.
 Maintenance-free.
Invisible to radar.
Dynamically reconfigurable.
Capable of transmitting signals at fast speed.
Energized and de-energized in seconds.
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13. LIMITATIONS
 Higher power consumption.
 Plasma volumes must be stable and repeatable.
 High frequency signals do not penetrate the walls.
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14. Applications:
Military sector .
Electronic warfare.
Submarines/ships.
Wireless internet.
Radio and TV broadcasting.
Defense, Space and Homeland Security.
Space wave communication.
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15. DEVELOPMENT PROGRESS
 Growing need for speed of communication n/w
along with data handling capacity are the major
forces helping to explore new ways of transmission
and reception.
 It is expected that if PSiAn can be used for trans-
mission purpose the data transmission rate would
go upto 7 Gbps--------Wi-Gig.
 Car anti-collision radar system.
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16. Conclusion…..
 Plasma antenna works similar as traditional antenna
does with plasma replacing the metal conductor of
traditional antenna.
Because of plasma as conducting material,it offers
some advantages over normal antenna.
Invisible to radar and can release short pulses of
signals,
It can pave way towards faster wireless internet.
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17. References;
 M. Moisan and Z. J. Zakrzewski, “Plasma sources based on the propagation of
electromagnetic surface waves,”
 http://electronicsforu.com/electronicsforu/circuitarchives.plasma
antenna/view_article.asp.
 Theodore Anderson, 2011. Plasma Antennas. Artech House Papers from
Conference Proceedings.
 Alex Anderson, E. P. Pradeep, Experimental and theoretical results with
plasma antennas," IEEE Transactions on Plasma Science,
 http://www.ukessays.com/essays/information-technology/advantages-of-the-
plasma-antenna-information-technology-essay.php.
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18. THANK YOU
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