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By: DONSANJEEV (117 month(s) ago)

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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 and neutral particles. - Plasmas carry electrical currents and generate magnetic fields. - Types of Plasma are:- Warm Plasma Cold Plasma -Cold Plasma is used for antenna applications. 1


PLASMA ANTENNA TECHNOLOGY - Operates up to 90 GHz. - It use ionized gas as counducting 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. -Predicted performance:- Beam Positions= 16 Gain= 14dB Switching speed= 2 micro sec - Low weight and smaller in size 2


UNIQUE FEATURE OF PLASMA ANTENNA One fundamental distinguishing feature of a plasma antenna is that the gas ionizing process. A second fundamental distinguishing feature is that after sending a pulse the plasma antenna can be deionized. Selectable Multi beam. 3

SelectaBeam : 

SelectaBeam Key Features of Slectabeam:- Based on Beam forming tecnology. Avoid the need of alignment and realignment of fixed point to point links. Same Benifites as that of Phased array antenna. 4

ReflectaBeam : 

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

Advantages of Selectabeam and Reflectabeam : 

Advantages of Selectabeam and Reflectabeam High directional gain: 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.

Slide 7: 

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.

PSiAn : 

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 Advantages:- Wide band Multimedia Wireless local networks Medical etc


TRADITIONAL ANTENNA VS PLASMA ANTENNA -Unlike simple directional antennas, Plasma Antennas’ selecta-beam avoiding the need for manual or mechanical alignment and realignment 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 9


APPLICATIONS Network Equipment Providers and Systems Integrators Network Operators Public Safety Networks Sensing Defense, Space and Homeland Security. 10

Microwave Communication : 

Microwave Communication Plasma Antenna Provide:- -Ease for realignment of long range directional antennas. -Low Cost  for the network owner. 11

WiFi-WiMAX Local Access Point : 

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 12


ADVANTAGES -High gain -Low interference -Compact and lightweight -Widebandwidth -Maintenance free -Perfect Reflector 13

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