Plasma final

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 1/17

A SEMINAR PRESENTATION

ON

PLASMA ANTENNA

PRESENTED BY:Brijesh Kumar Mishra

0821216016

ETE Sec - E

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 2/17

INTRODUCTION

WHAT IS PLASMA ?

-An ordinary matter found by Sir William Crookes

a fourth state of matter, now known as plasma.

- Plasmas are conductive assemblies of charged andneutral particles.

- Plasmas carry electrical currents and generatemagnetic fields.

- Types of Plasma are:-

Warm PlasmaCold Plasma

-Cold Plasma is used for antenna applications.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 3/17

PLASMA ANTENNA

� A plasma antenna is a type of radio antenna currently indevelopment in which plasma is used instead of the metalelements of a traditional antenna. It can be used for bothtransmission and reception.

� Although plasma antennas have only become practical inrecent years, the idea is not new; a patent for an antennausing the concept was granted to J Hettinger in 1919.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 4/17

PLASMA ANTENNA TECHNOLOGY 

- Operates up to 90 GHz.

- It use ionized gas as counducting material .

- The gas is ionized only for the time of transmissionor reception.

-The design allows for extremely short pulses,important to many forms of digitalcommunication and radars.

-Predicted performance:-Beam Positions= 16Gain= 14dBSwitching speed= 2 micro sec

- Low weight and smaller in size

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 5/17

UNIQUE FEATURE OF PLASMA ANTENNA

� One fundamental distinguishingfeature of a plasma antenna isthat the gas ionizing process.

� A second fundamentaldistinguishing feature is that aftersending a pulse the plasma

antenna can be deionized.

� Selectable Multi beam.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 6/17

SelectaBeam

Key Features of Slectabeam:-

� Based on Beam forming tecnology.

� Avoid the need of alignment and realignment of fixed pointto point links.

� Same Benifites as that of Phased array antenna.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 7/17

ReflectaBeam

Key Features of Reflectabeam:-

� Operates upto Freqencies of 90Ghz

� Design to provide high speed selection� At High Fequencies Applications it also include

radar sensors and monitering systems

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 8/17

Advantages of Selectabeamand Reflectabeam

� High directional g ain:  concentrates RF power to

increase link budget, dramatically enhancing network

coverage and capacity.

� Low sidelobes reduce interference, enabling improved

frequency re-use and substantially higher utilization.

� Wide bandwidth supports simultaneous multi-band or

UWB operation from a single compact antenna.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 9/17

� High speed beam switching enables spatial time

division multiplexing to boost spectral efficiency

and throughput.

� Compact and lightweight form factor reduces site

and mast costs, simplifies installation and

minimizes environmental impact.

� Maintenance free - auto-aligning with no moving

parts and requires no calibration, minimizing total

cost.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 10/17

PSiAn

� Plasma antenna up coming Technology is PSiAn Launched in 2010

� Based on silicon integrated circuits technology

�

Its product cost does not increase with frequency� Frequncy range -1 to 300GHz

Advantag es:-

� Wide band Multimedia

� Wireless local networks� Medical etc

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 11/17

TRADITIONAL ANTENNA VS PLASMAANTENNA

-Unlike simple directional antennas, Plasma Antennas· selecta-beamavoiding the need for manual or mechanical alignment andrealignment of fixed point-to-point communication links.

-Plasma Antennas· selectable-beam antennas provide similar

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

VS

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 12/17

APPLICATIONS

� Network Equipment Providers and Systems Integ rators 

� Network Operators 

� Public Safety Networks

� Sensing 

� Defense, Space and Homeland Security.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 13/17

Microwave Communication

Plasma Antenna Provide:-

-Ease for realignment of long range directional antennas.

-Low Cost for the network owner.

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 14/17

WiFi-WiMAX Local Access Point

Plasma Antennas Provides:--Selectable multi-beam

-Directional beamforming at another frequency

-Powerful dual-band combination provides an efficient and compact¶single-antenna· solution for local WiFi

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 15/17

ADVANTAGES

-High gain

-Low interference

-Compact and lightweight

-Widebandwidth

-Maintenance free

-Perfect Reflector

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 16/17

SOURCES

� en.wikipedia.org

� www.google.com

�

www.plasmaantenna.com� www.livescience.com

8/7/2019 Plasma final

http://slidepdf.com/reader/full/plasma-final 17/17

Thank You