29 %
71 %
Information about PLASMA ANTENNA

Published on November 18, 2010

Author: thesangram.2007


Slide 1: PLASMA ANTENNA Presented by:BIRAJA PRASANNA JENAREGD NO: 0701219141BRANCH: ELECTRONICS AND TELECOMMUNICATION Supervised by: Mrs. BISMITA DASH OUTLINE OF THE PRESENTATION : OUTLINE OF THE PRESENTATION INTRODUCTION PLASMA ANTENNA PLASMA ANTENNA TECHNOLOGY WORKING PRINCIPLE OF PLASMA ANTENNA PHYSICAL PROCESSES IN PLASMA ANTENNA CHARACTERSTICS APPLICATIONS ADVANTAGES CONCLUSION INTRODUCTION : INTRODUCTION Plasma Antenna is a special type of antenna in which the metal conducting elements of a conventional antenna are replaced by a plasma. PLASMA : PLASMA Fourth state of matter similar to gas. Sir William Crookes, an English Physicist identified it in 1879. According to Markland’s technology, plasmas are conductive assemblies of charged and neutral particles and fields that exhibit collective effects. ANTENNA : ANTENNA It is defined as an electrical conductor of a specific length that radiate radiowaves generated by a transmitter and collect that waves at the receiver. GENERATION OF ELECTRIC AND MAGNETIC FIELD : GENERATION OF ELECTRIC AND MAGNETIC FIELD When voltage applied to an antenna,electric field produced. Causes current to flow in antenna. Due to current flow,magnetic field produced. These two fields are emitted from an antenna and propagate through space over very long distances. PLASMA ANTENNA TECHNOLOGY : PLASMA ANTENNA TECHNOLOGY It employs an ionized gas enclosed in a tube as the conducting element of an antenna. When the gas is electrically charged or ionized to a plasma,it becomes conductive and allowing radio frequency signals to be transmitted or received. When gas is not ionized,the antenna element ceases to exit. IONIZED GAS PLASMA ANTENNA : IONIZED GAS PLASMA ANTENNA Slide 9: FIGURE OF ANTENNA FIGURE OF PLASMA TUBE ANTENNA : FIGURE OF PLASMA TUBE ANTENNA WORKING PRINCIPLE : WORKING PRINCIPLE When supply is given to the tube, the gas inside it gets ionised 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. WORKING PRINICIPLE FIGURE : WORKING PRINICIPLE FIGURE PHYSICAL PROCESSES : PHYSICAL PROCESSES A plasma jet has diameter ‘a’ is formed in the atmosphere and passes through a dielectric cylinder that has diameter ‘b’ and a conductive spiral is winded on the cylinder. FIGURE OF PLASMA ANTENNA DESIGN: OPERATION : OPERATION When plasma jet enters into the spiral field, signals are emitted. The spiral is a localised concentration of plasma. These spirals behave as plasma mirrors which helps in transmission of RF signals. CHARACTERSTICS : CHARACTERSTICS Gas ionizing process can manipulate resistance and when deionized,the gas has infinite resistance and doesnot interact with RF radiation. After sending pulse,it can be deionized and elliminates “ringing effect”. PLOT OF SPIRAL CURRENT : PLOT OF SPIRAL CURRENT APPLICATIONS : APPLICATIONS In highspeed digital communication and radar system. In radio antenna. Stealth for millitary application. Used for transmission and modulation techniques(PM,AM,FM). ADVANTAGES : ADVANTAGES Higher Power Enhanced bandwidth Higher efficiency Lower noise Perfect reflector Low in weight Smaller in size Improved reliability CONCLUSION : 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. REFERENCES : REFERENCES Slide 21: THANK YOU

Add a comment

Related presentations

Related pages

Plasma Antennas

The company developing plasma antennas to meet large demands in civil and defence markets. A plasma antenna generates localised concentrations of plasma to ...
Read more

Plasma antenna - Wikipedia, the free encyclopedia

A plasma antenna is a type of radio antenna currently in development in which plasma is used instead of the metal elements of a traditional antenna. A ...
Read more

Contact Us - Plasma Antennas

For more information on Plasma Antennas, our products and solutions, contact us at our corporate headquarters or complete the form below. We welcome all ...
Read more

Plasma Antenna Seminar Report - Scribd

Plasma Antenna Seminar Report - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. :-)
Read more plasma antenna

Product Description... paper thin antenna will complement today's slick LCD or plasma flat ...
Read more

Plasma Antennas: Survey of Techniques and the Current ...

NPS-CRC-03-001 MONTEREY, CALIFORNIA Plasma Antennas: Survey of Techniques and the Current State of the Art by D. C. Jenn September 29, 2003 Approved for ...
Read more

Plasma Antennas | Books | Artech House Book Store | Artech ...

Introduction. Plasma Physics for Plasma Antennas – Mathematical Models of Plasma Physics. Man-Made Plasmas and Some Applications. Basic Physics of ...
Read more

Plasma Antenna - YouTube

Dr. Theodore Anderson showing plasma antenna prototypes at the IEEE APS 2014 CONFERENCE in MEMPHIS, TN., USA To contact Dr Anderson call 518 409 ...
Read more

Plasma Antennas in Mobile Antenna Systems

Haleakala R&D, Inc. Dr. Ted Anderson; 518-409-1010; 1 Plasma Antennas in Mobile Antenna Systems Haleakala Research and Development,
Read more