PLASMA ANTENNA

Presented by:Mukesh Kumar Poonia

ROLL NO: 11ECTEC035 BRANCH: ECE

B.Tech IVth Year VIIIth Sem.

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OUTLINE OF THE PRESENTATION

INTRODUCTION PLASMA CLASSIFICATION OF PLASMA PLASMA FREQUENCY PLASMA ANTENNA TECHNOLOGY WORKING PRINCIPLE OF PLASMA

ANTENNA PsiAN APPLICATIONS ADVANTAGES CONCLUSION REFERENCES

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INTRODUCTION

• Plasma Antenna is a special type of antenna in which the metal conducting elements of a conventional antenna are replaced by a plasma.

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PLASMA

• This is the fourth state of matter similar to gas.

• It is identified by Sir William Crookes in 1879.

• Plasmas are conductive assemblies of charged and neutral particles.

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CLASSIFICATION OF PLASMA 5

PLASMA FREQUENCY6

the electron plasma frequency the ion plasma frequency

the plasma frequency:

as the electrons are so much lighter than ions

as the electrons are so much lighter than ions

PLASMA ANTENNA TECHNOLOGY

It use ionized gas as conducting material . The gas is ionized only for the time of

transmission or reception. The design allows for extremely short pulses,

important to many forms of digital communication and radars.

Operates up to 90 GHz

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IONIZED GAS PLASMA ANTENNA

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WORKING PRINCIPLE

When supply is given to the tube, the gas inside it gets ionized to plasma.

When plasma is highly energised, it behaves as a conductor.

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

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WORKING PRINICIPLE FIGURE 10

UNIQUE FEATURE OF PLASMA ANTENNA

One fundamental feature of a plasma antenna is that the gas ionizing process

A second fundamental feature is that after sending a pulse the plasma antenna can be de-ionized.

Selectable Multi beam

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PSiAn (Plasma Silicon Antenna)

• Plasma antenna up coming Technology is PSiAn Launched in 2010.

• Based on silicon integrated circuits technology.

• It contain number of diode on single silicon chip.

• Its product cost does not increase with frequency.

• Frequency range -1 to 300GHz.

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TRADITIONAL ANTENNA VS PLASMA ANTENNA

- Unlike simple directional antennas, Plasma Antennas’ selectable-beam avoiding the need for manual or mechanical alignment and realignment of fixed point-to-point communication links. 

- Plasma Antennas provide similar advantages to phased array antennas but at a fraction of the cost, together with much wider bandwidth of operation.

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APPLICATIONS

In highspeed digital communication and radar system.

In radio antenna.

Stealth for millitary application.

Used for transmission and modulation techniques(PM,AM,FM).

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ADVANTAGES

Higher Power Enhanced bandwidth Higher efficiency Lower noise Perfect reflector Low in weight Smaller in size Improved reliability

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CONCLUSION

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

Its action has many general with the dielectric antenna action.

It helps in pulse operation.

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REFERENCES17

www.wikipedia.org

www.seminaron.in

www.seminarelectronicstopic.com

www.techalone.com

www.authorstream.com

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