this is latest type of antenna

1. SHRI DADAJI INSTITUTE OF
TECHNOLOGY AND SCIENCE
SEMINAR ON
PLASMA ANTENNA
SUBMITTED TO:
EC DEPARTMENT
SUBMITTED BY:
SHIVRANJAN GITE
EC 6th SEM

2. CONTENTS:-
 INTRODUCTION
 PLASMAANTENNA
 ANTENNA PRINCIPLE
 OPERATION OF PLASMA ANTENNA
 CHARACTERSTICS
 ADVANTAGES
 LIMITATIONS
 APPLICATIONS
 CONCLUSION
 REFERENCE

3. INTRODUCTION
 An antenna is an electrical device which converts electric currents
into radio waves at transmitter and inverse of this operation at
receiver
 A plasma antenna is a radio frequency (RF) antenna based on
plasma elements instead of metal conductors.

4. PLASMA ANTENNA
 It is a tube type structure
 In plasma antenna low Pressured Ionized Gasses are used
 It based on Conductivity of Ionized Gasses
 It Provide Electromagnetic Wave Radiation

5. AN EXAMPLE OF PLASMA ANTENNA

6. ANTENNA PRINCIPLE
 When voltage is applied to an antenna, electric field is
produced
 It causes current to flow in antenna
 Due to current flow, magnetic field is produced.
 These two fields are emitted from an antenna and propagate
through space over very long distance

7. OPERATION OF PLASMA ANTENNA
 In an ionized gas plasma antenna, a gas is ionized to create a
plasma.
 Plasma state act as a driven element to radiate radio waves, or
to receive them.
 Alternatively the plasma can be used as a reflector or a lens to
guide and focus radio waves from another source

8. • Solid-state antennas differ in that the plasma is created
from electrons generated by activating thousands of diodes on a
silicon chip.

9. CHARACTERISTICS
 Gas ionizing process can manipulate resistance and when
deionized, the gas has infinite resistance and doesn't interact
with RF radiation.
 Operates up to 90 GHz.
 It use ionized gas as conducting material.
 The gas is ionized only for the time of transmission or
reception.

10. ADVANTAGES
 Higher Efficiency
 Lower Noise
 Low in Weight
 Enhanced Bandwidth
 Higher Power

11. LIMITATIONS
• It can not be used in mobile environment
• Plasma antennas are expensive and hard to manufacture.
 Ionozer increases power consumption .

12. APPLICATIONS
 Military Applications
 Public Safety Networks
 Radar Systems
 High Frequency Applications

13. CONCLUSION
• Plasma antenna is requirment of morden day because it has
many advantages over traditional antenna as we discussed
today.
• This technology is not possible practically but in future it is
practically provided.
• It is more advantageous than other antenna due to ionized gas.

14. REFERENCE
 www.google.co.in
 www.wikipedia.org
 www.slideshare.com
 www.technopdf.com