circular polarized antenna

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• Circular polarization — The electric field vectors of a traveling circularly polarized electromagnetic wave. In electrodynamics, circular polarization[1] of an electromagnetic wave is a polarization in which the electric field of the passing wave does not change… …   Wikipedia

• Patch antenna — A patch antenna is a popular antenna type, which gains its name from the fact that it basically consists of a metal patch suspended over a ground plane. The assembly is usually contained in a plastic radome, which protects the structure from… …   Wikipedia

• Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …   Wikipedia

• Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia

• Omnidirectional antenna — The radiation pattern of a simple omnidirectional antenna, a vertical half wave dipole antenna. In this graph the antenna is at the center of the donut . Radial distance from the center represents the power radiated in that direction. The power… …   Wikipedia

• Chu-Harrington limit — The Chu Harrington limit or Chu limit sets a lower limit on the Q factor for a small radio antenna. The definition of a small antenna is one that can fit inside a sphere . For a small antenna the Q is proportional to the reciprocal of the volume… …   Wikipedia

• Orthomode transducer — Orthomode transducer, VSAT Ku band Outdoor unit, includes …   Wikipedia

• FLR-9 — The AN/FLR 9 is a type of very large circular Wullenweber antenna array, built at many locations during the cold war for HF/DF direction finding of high priority targets. The worldwide network, known collectively as Iron Horse , could locate on… …   Wikipedia

• List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… …   Wikipedia

• AN/SPS-55 — Infobox Radar name = AN/SPS 55 caption = AN/SPS 55 antenna on USS|Samuel B. Roberts|FFG 58 country = United States introdate = 1971 number = type = Surface search frequency = I band (9.05 to 10.0 GHz) range = greater than convert|50|nmi|km|1 [… …   Wikipedia