16-04-2015, 04:15 PM
plz send me ppt and seminar report on plasma antenna .
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plasma antennas ppt download
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plz send me ppt and seminar report on plasma antenna .
09-03-2017, 04:09 PM
A plasma antenna is a type of radio antenna currently under development in which plasma is used instead of the metallic elements of a traditional antenna. A plasma antenna can be used for both transmission and reception. Although plasma antennas have only become practical in recent years, the idea is not new; A patent for an antenna using the concept was granted to J. Hettinger in 1919.
The first practical examples of the technology used discharge tubes to contain the plasma and are called plasma antennas of ionized gas. Ionized gas plasma antennas can be turned on and off and are good for stealth and resistance to electronic warfare and cyber attacks. Ionized gas plasma antennas can be nested in such a way that higher frequency plasma antennas are placed within lower frequency plasma antennas. Higher frequency ionized gas plasma antenna arrays can transmit and receive through lower frequency ionized gas plasma antenna arrays. This means that the ionized gas plasma antennas can be placed together and the ionized gas plasma array antennas can be stacked. Ionized gas plasma antennas can eliminate or reduce co-site interference. Intelligent plasma ionized gas antennas use plasma physics to shape and direct antenna beams without the need for phased arrays. Satellite signals can be directed and / or focused on reflection or refraction modes using plasma tube banks making single ionized gas satellite plasma antennas. The thermal noise of the ionized gas plasma antennas is lower than in the metal antennas corresponding to the higher frequencies. Solid state plasma antennas (also known as plasma silicon antennas) with directional directional functionality that can be fabricated using standard silicon chip manufacturing techniques are also in development. Plasma silicon antennas are candidates for use in WiGig (the anticipated Wi-Fi enhancement), and have other potential applications, for example, in reducing the cost of vehicle mounted radar systems against collision.
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