10-10-2012, 10:48 AM
plasma antenna
plasma antenna.doc (Size: 92 KB / Downloads: 62)
Abstract
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 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.
Early practical examples of the technology used discharge tubes to contain the plasma and are referred to as ionized gas plasma antennas is solid state plasma antennas (also known as plasma silicon antennas) with steerable directional functionality that can be manufactured using standard silicon chip fabrication technique are now also in development. Plasma silicon antennas are candidates for use in WiGIg (the planned enhancement toWi-Fi), and have other potential applications, for example in reducing the cost of vehicle-mounted radar collosion avoidance system
Operation
In an ionized gas plasma antenna, a gas is ionized to create a plasma. Unlike gases, plasmas have very high electrical conductivity so it is possible for radio frequency signal signals to travel through them so that they act as a driven element (such as a dipole antenna) 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.
Solid-state antennas differ in that the plasma is created from electrons generated by activating thousands of diodes on a silicon chip.
Plasma Antenna Technology
It employs ionized gas enclosed in a tube as the conducting element of an antenna. . This is a fundamental change from traditional antenna design that generally employs solid metal wires as the conducting element. The gas is ionized only for the time of transmission or reception.
How Does Plasma Antenna Work?
Plasma antenna - conducting element - ionized gas enclosed in a tube as a of an antenna.
When the Gas is ionized to a plasma state -then it becomes conductive, allowing radio frequency (RF) signals to be transmitted or receivedIn order for plasma to have significant effect on an electromagnetic wave, the electronic density must be increased by several orders of magnitude.When the gas is not ionized or a plasma antenna is turned off - it is transparent and allowing other adjacent antennas to transmit or receive without interference.
plasma antenna.doc (Size: 92 KB / Downloads: 62)
Abstract
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 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.
Early practical examples of the technology used discharge tubes to contain the plasma and are referred to as ionized gas plasma antennas is solid state plasma antennas (also known as plasma silicon antennas) with steerable directional functionality that can be manufactured using standard silicon chip fabrication technique are now also in development. Plasma silicon antennas are candidates for use in WiGIg (the planned enhancement toWi-Fi), and have other potential applications, for example in reducing the cost of vehicle-mounted radar collosion avoidance system
Operation
In an ionized gas plasma antenna, a gas is ionized to create a plasma. Unlike gases, plasmas have very high electrical conductivity so it is possible for radio frequency signal signals to travel through them so that they act as a driven element (such as a dipole antenna) 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.
Solid-state antennas differ in that the plasma is created from electrons generated by activating thousands of diodes on a silicon chip.
Plasma Antenna Technology
It employs ionized gas enclosed in a tube as the conducting element of an antenna. . This is a fundamental change from traditional antenna design that generally employs solid metal wires as the conducting element. The gas is ionized only for the time of transmission or reception.
How Does Plasma Antenna Work?
Plasma antenna - conducting element - ionized gas enclosed in a tube as a of an antenna.
When the Gas is ionized to a plasma state -then it becomes conductive, allowing radio frequency (RF) signals to be transmitted or receivedIn order for plasma to have significant effect on an electromagnetic wave, the electronic density must be increased by several orders of magnitude.When the gas is not ionized or a plasma antenna is turned off - it is transparent and allowing other adjacent antennas to transmit or receive without interference.