1. COLLEGE OF ENGINEERING, PERUMON
W E L C O M E
COLLEGE OF ENGINEERING, PERUMON

2. COLLEGE OF ENGINEERING, PERUMON
PLASMA
ANTENNA
TECHNOLOGY
COLLEGE OF ENGINEERING, PERUMON

3. COLLEGE OF ENGINEERING, PERUMON
S U B M I T T E D B Y
NEETHA PONNU
EC 7A
ROLL NO:39
COLLEGE OF ENGINEERING, PERUMON

4. COLLEGE OF ENGINEERING, PERUMON
C O N T E N T S
PLASMA PHYSICS
COMMON PLASMAS
UNIQUE FEATURES OF PLASMA ANTENNA
WORKING
STEALTH
PULSED PLASMA ANTENNA
ADVANTAGES
DISADVANTAGES
APPLICATIONS
CONCLUSION
COLLEGE OF ENGINEERING, PERUMON

5. COLLEGE OF ENGINEERING, PERUMON
P L A S M A P H Y S I C S
Fourth state of matter
Discovered by WILLIAM CROOKES
Partially ionized gas
Electrons free rather than being
bound to atoms
Electrically conductive.
So respond to EM field
Plasmas exist only when the gases
they are made of is very hot
COLLEGE OF ENGINEERING, PERUMON

6. COLLEGE OF ENGINEERING, PERUMON
ARTIFICIALLY PRODUCED PLASMAS
Those found in plasma displays
inside fluorescent lamps
Rocket exhaust
COLLEGE OF ENGINEERING, PERUMON

7. COLLEGE OF ENGINEERING, PERUMON
T E R R E S T R I A L P L A S M A S
Those found in:-
Lightning
Ionosphere
Elves
Jets
COLLEGE OF ENGINEERING, PERUMON

8. COLLEGE OF ENGINEERING, PERUMON
A S T R O P H Y S I C A L P L A S M A S
Plasmas found in the
Sun
Stars
Interplanetary space
Interstellar space
COLLEGE OF ENGINEERING, PERUMON

9. COLLEGE OF ENGINEERING, PERUMON

10. COLLEGE OF ENGINEERING, PERUMON
UNIQUE CHARACTERISTICS
Higher power
Enhanced bandwidth
Reconfiguration and multifunctionality
Lower noice
Perfect reflector
COLLEGE OF ENGINEERING, PERUMON

11. COLLEGE OF ENGINEERING, PERUMON
W O R K I N G
Plasma when dense, acts as a conductor
Antenna generates concentration of plasma to form plasma mirror
A central field is located at the focus of mirror which deflects RF beam
Ionized region produced by electronically controlled devices
COLLEGE OF ENGINEERING, PERUMON

12. COLLEGE OF ENGINEERING, PERUMON
W O R K I N G
Plasma moved by switching device on or off
Reflectors- they become active one at a time
Beams are steered without the need for mechanical motion
SI disc act as lens to form reflector system that enable RF energy to be collimated
When gas is not ionized element ceases to exist
COLLEGE OF ENGINEERING, PERUMON

13. COLLEGE OF ENGINEERING, PERUMON

14. COLLEGE OF ENGINEERING, PERUMON
S T E A L T H
New antenna made of plasma
Vanishes when u turn off
Important in battlefield
Impervious to signal jamming
COLLEGE OF ENGINEERING, PERUMON

15. COLLEGE OF ENGINEERING, PERUMON
P U L S E D P L A S M A A N T E N N A
A method and device of energizing a plasma antenna
using power from the discharge of an electro propulsion engine
comprises of a propellant and feed system, a capacitor charging power processing unit and an energy storage capacitor
COLLEGE OF ENGINEERING, PERUMON

16. COLLEGE OF ENGINEERING, PERUMON
energy is released over an electrode gap
resultant ablation products are ionized and accelerated by an electromagnetic force, thereby producing a pulse.
COLLEGE OF ENGINEERING, PERUMON

17. COLLEGE OF ENGINEERING, PERUMON
A D V A N T A G E S
Reconfiguration
Improved performance
Stealthiness
Good efficiency
Portable, reliable
COLLEGE OF ENGINEERING, PERUMON

18. COLLEGE OF ENGINEERING, PERUMON
D I S A D V A N T A G E S
complexity of antenna design
equipment for ionisation
noise
COLLEGE OF ENGINEERING, PERUMON

19. COLLEGE OF ENGINEERING, PERUMON
A P P L I C A T I O N S
STEERABLE WIRELESS LAN
MESH NETWORKS
DEFENSE APPLICATIONS
WiFi SECURITY
COLLEGE OF ENGINEERING, PERUMON

20. COLLEGE OF ENGINEERING, PERUMON
C O N C L U S I O N
the plasma antenna R&D project launched the technology
attracted the intrest from diverse areas
potential advantages for antenna design
revolutionised antenna tecnology
COLLEGE OF ENGINEERING, PERUMON

21. COLLEGE OF ENGINEERING, PERUMON
B I B L I O G R A P H Y
RADIO AND WAVE PROPOGATION-K.D.PRASAD
COLLEGE OF ENGINEERING, PERUMON

22. COLLEGE OF ENGINEERING, PERUMON
T H A N K Y O U
COLLEGE OF ENGINEERING, PERUMON

23. COLLEGE OF ENGINEERING, PERUMON
Q U E R I E S ? ? ?
COLLEGE OF ENGINEERING, PERUMON