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.[1] A plasma antenna can be used for both transmission and reception.[2] Although plasma antennas have only become practical in recent years[when?], the idea is not new; a patent for an antenna using the concept was granted to J. Hettinger in 1919.[3]
Early practical examples of the technology used discharge tubes to contain the plasma and are referred to as ionized gas plasma antennas. 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 such that the higher frequency plasma antennas are placed inside 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 co-located and ionized gas plasma antenna arrays can be stacked. Ionized gas plasma antennas can eliminate or reduce co-site interference. Smart ionized gas plasma antennas use plasma physics to shape and steer the antenna beams without the need of phased arrays. Satellite signals can be steered or focused in the reflective or refractive modes using banks of plasma tubes making unique ionized gas satellite plasma antennas. The thermal noise of ionized gas plasma antennas is less than in the corresponding metal antennas at the higher frequencies.[1] Solid state plasma antennas (also known as plasma silicon antennas) with steerable directional functionality that can be manufactured using standard silicon chip fabrication techniques are now also in development.[4] Plasma silicon antennas are candidates for use in WiGig (the planned enhancement to Wi-Fi), and have other potential applications, for example in reducing the cost of vehicle-mounted radar collision avoidance systems.[4]
^ ab'Stealth' Antenna Made Of Gas, Impervious To Jamming science20.com, published 2007-11-12, accessed 2010-12-14
^Plasma Antenna Center for Remote Sensing, accessed 2010-12-14
^Aerial Conductor for Wireless Signaling and Other Purposes United States Patent 1309031, published 1919-07-08, accessed 2010-12-15
^ abWireless at the speed of plasma New Scientist, published 2010-12-13, accessed 2010-12-14
A plasmaantenna is a type of radio antenna currently in development in which plasma is used instead of the metal elements of a traditional antenna. A...
April 2006). "Experimental and theoretical results with plasmaantennas". IEEE Transactions on Plasma Science. 34 (2): 166–172. Bibcode:2006ITPS...34..166A...
thruster often generates the source plasma using radio frequency or microwave energy, using an external antenna. This fact, combined with the absence...
The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. It takes its name from...
pale in comparison. A simple application of plasma stealth is the use of plasma as an antenna: metal antenna masts often have large radar cross sections...
The antenna effect, more formally plasma induced gate oxide damage, is an effect that can potentially cause yield and reliability problems during the manufacture...
this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With...
distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave...
effect of plasma on re-entry vehicles. In 1980, he retired from AFRL and joined MIT Lincoln Laboratory where he worked on reflector antennas until his...
PWS/PRA Antenna: Length of antenna: 10 meters (10.936 yards) Number of antenna: 2 Angle between antenna: 90 degrees New Horizons (see plasma and high-energy...
Inductively coupled plasma atomic emission spectroscopy (ICP-AES), also referred to as inductively coupled plasma optical emission spectroscopy (ICP-OES)...
Plasma speakers or ionophones are a form of loudspeaker which varies air pressure via an electrical plasma instead of a solid diaphragm. The plasma arc...
in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver...
The Sloper Antenna is a slanted Dipole antenna. While horizontal dipoles required two large support masts, this antenna type only needs one large mast...
propulsion uses a helicon plasma source to produce a plasma beam. A helicon drive consists of a quartz tube wrapped in a radio antenna, into which a gas such...
spacecraft propulsion where an onboard magnetic field source interacts with a plasma wind (e.g., the solar wind) to form an artificial magnetosphere (similar...
and Bluetooth earphones. Antennas used include short whip antennas, rubber ducky antennas, sleeve dipoles, patch antennas, and increasingly the printed...
submillimetre wave instrument, J-MAG magnetometer, PEP particle and plasma package, RPWI radio and plasma wave investigation, 3GM radio science package, the PRIDE...
This is a list of plasma physics topics. Contents: Top 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Physics portal G.S. Miller, E.E. Salpeter...
a powerful radio wave transmitter with an array of antennas which is used for research of plasma turbulence, the ionosphere and upper atmosphere. These...
Metamaterial antennas are a class of antennas which use metamaterials to increase performance of miniaturized (electrically small) antenna systems. Their...
(DFR) antennas that were mounted on the frame of two of the solar panels. Since the aft side of the spacecraft faced the Sun, the solar plasma probe was...