Yeshwantrao Chavan College of Engineering Department of Electronics & Telecommunication Engineering

Plasma Antenna

Presented By Name of Student:- SAHIL KEDAR

Roll No.:- B-169Section:- B

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 2

INDEX

1.Introduction to Plasma2.Features3.Working Principle Of Plasma Antenna4.Advantages of Plasma Antenna5.Disadvantages of Plasma Antenna6.Applications of Plasma Antenna7.Future Scope of Plasma Antenna8.Conclusion of Plasma Antenna 9.References

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 3

Introduction to Plasma

It is a gas in which certain portion of particles are ionized.It responds strongly to electromagnetic fields.

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.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 4

Plasma Antennas

Plasma Antennas is a type of radio antenna currently under development.Plasma is used instead of metal for conduction.They can be used for both transmission and reception.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 5

FeaturesAbility to focus a single beam.

Communicate signals in very short pulse.

Configurable for frequency, bandwidth, gain, length of plasma column and radius of glass tube.

Transmit and receive for same apertures if the frequencies are widely separated.

Gas ionizing process can manipulate resistance and when deionised, the gas has infinite resistance and doesn’t interact with RF radiation.

After sending pulse , it can be deionised.

It can operate up to 90 GHz.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 6

Electric and Magnetic Field produced by the Antenna

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Working Principle Of Plasma AntennaA plasma antenna generates localized concentrations of plasma to form a plasma mirror which deflects an RF beam launched from a central feed located at the focus of the mirror.

An ionized region, or solid state plasma, can be generated in silicon using electronically controlled devices (plasma diodes) that are positioned between closely spaced metalized surfaces which constrain the beam.

The plasma can be freely moved by switching groups of plasma diodes on and off that follow the desired geometry of the reflector.

The resulting pattern forms a rosette of overlapping reflectors only one of which is active at any time.

This enables the beam to be steered quickly without the need for mechanical motion. When supply is given to the tube, the gas inside it gets ionized to plasma. When plasma is highly energized, it behaves as a conductor.

Antenna generates a localized concentration of plasma to form a plasma mirror that deflects RF beam launched from a central feed located at focus of the mirror.

When plasma jet enters into the spiral field, signals are emitted. The spiral is localized concentration of plasma. These spirals behave as plasma mirrors which help in transmission of RF signals.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 8

Working Principle Of Plasma Antenna

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 9

Advantages of Plasma Antenna

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.

Plasma posses a high level of conductivity.

A plasma antenna is much less susceptible to electrical damage and can often be repaired much faster if some event does occur to temporary interfere with its function.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 10

Disadvantages of Plasma Antenna

Higher power consumption.

Plasma volumes must be stable and repeatable.

High frequency signals do not penetrate the walls.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 11

Applications of Plasma AntennaElectronic warfare.Submarines/ships.Wireless internet.Radio and TV broadcasting.Defense, Space and Homeland Security.Space wave communication.Military applications for its stealth, weight and easily reconfiguration.Unmanned air vehicle sensor antennas.Detection and tracking of ballistic missiles.Telemetry. Broad-band communications. Ground penetrating radar.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 12

Future Scope of Plasma Antenna

Growing need for speed of communication along with data handling capacity are the major forces helping to explore new ways of transmission and reception.

It is expected that if Plasma Antenna can be used for trans- mission purpose the data transmission rate would go up to 7 Gbps Wi-Gigabit router.

Car anti-collision radar system.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 13

Conclusion of Plasma Antenna

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.

It is more advantageous more than other antenna due to ionized gas.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 14

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-ante

nna-information-technology-essay.php.

May 3, 2023 Department of Electronics & Telecommunication Engineering, YCCE, Nagpur 15

Plasma Antenna

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