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Encyclopedia > Feed horn

In satellite dish and antenna design parlance, a feedhorn (or feed horn) is a horn antenna used to convey radio waves between the transceiver (transmitter and/or receiver) and the reflector. Special dish for up to 16 satellite positions (KU-band) Satellite dish antenna for C-Band A satellite dish is a type of parabolic antenna designed with the specific purpose of transmitting signals to and/or receiving from satellites. ... A yagi antenna Most simply, an antenna is an electronic component designed to send or receive radio waves. ... Design as a process can take many forms depending on the object being designed and the individual or individuals participating. ... Look up Idiom in Wiktionary, the free dictionary An idiom is an expression whose meaning is not compositional—that is, whose meaning does not follow from the meaning of the individual words of which it is composed. ... Horn may refer to: horn (anatomy), a hollow, pointed projection of the skin of various animals Horn, Austria horn (diacritic), a diacritic mark used to indicate that a normally rounded vowel such as o or u is to be pronounced unrounded horn (instrument) horn, a slang term for any wind... A horn antenna is used for the transmission and reception of microwave signals. ... Conveyancing - Wikipedia /**/ @import /skins-1. ... Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna. ... A transceiver is a device that has a transmitter and receiver which is combined into a one unit. ... Antenna tower of Crystal Palace transmitter, London A transmitter (sometimes abbreviated XMTR) is an electronic device which with the aid of an antenna propagates an electromagnetic signal such as radio, television, or other telecommunications. ... For the device which is a tuner (radio) and a amplifier and/or loudspeaker, see receiver (home stereo). ... A reflector can mean one of several things: a reflecting telescope a device or a part of an antenna that reflects radio waves a device that causes reflection, for example, a mirror or a retroreflector a 1981 album by Pablo Cruise In LAPACK the term reflector with the types block...


The feedhorn also selects the polarity of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions. This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise (also called left- and right-handed) if it is circular. Certain devices can also allow a feedhorn to accept both linear and circular, though these cause a slight insertion loss to all incoming signals. The polarity of an object is, in general, its physical alignment. ... Attenuation is the decrease of the amount, force, magnitude, or value of something. ... Signaling, or a signal, may mean: Look up signal in Wiktionary, the free dictionary Scientific concepts In information theory, a signal is a flow of information that can be represented as a mathematical function. ... In broadcasting an adjacent channel is an AM, FM, or TV channel that is next to another channel. ... In telecommunication, the term transponder (sometimes abbreviated to XPDR or TPDR) has the following meanings: An automatic device that receives, amplifies, and retransmits a signal on a different frequency. ... U.S. military MILSTAR communications satellite A communications satellite (sometimes abbreviated to comsat) is an artificial satellite stationed in space for the purposes of telecommunications. ... Horizontal is an orientation relating to, or in parallel with the horizon, and thus perpendicular to the vertical. ... An object is in a vertical position when it is aligned in an up-down direction, perpendicular to the horizon. ... The word linear comes from the Latin word linearis, which means created by lines. ... Clockwise can refer to: Clockwise and counterclockwise Clockwise (movie) This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... A circular may be: the adjective form of circle an advertisement which is circulated a Pastoral letter, Encyclic, or Papal bull that is circulated between churches a circular argument is a term for a type of logical fallacy where the very thing that is trying to be proved is assumed... In telecommunication, the term insertion loss has the following meanings: 1. ...


When used with a parabolic reflector or lens antenna, the phase center of the horn is usually placed at the focal point of the reflector, with the 3dB points of the horn's radiation pattern set to be at the edge of the reflector. On a satellite dish, the feedhorn is what is mounted at the end of a mast from the center of the dish, or on tripod legs mounted to the edge of the dish. A parabolic reflector (also known as a parabolic dish or a parabolic mirror) is a reflective device formed in the shape of a paraboloid of revolution. ... Categories: Stub ... A focal point may mean the same as focus. ... In telecommunication, the term radiation pattern has the following meanings: 1. ... A mast is a pole which holds a sail of a boat, see mast (sailing). ... A tripod refers to any three-legged structure. ...


If combined with the low-noise blockconverter (LNB), the feedhorn is part of an LNBF. A low-noise block converter (LNB, for low-noise block, or sometimes LNC, for low-noise converter) is used in communications satellite (usually broadcast satellite) reception. ... A low-noise block converter (LNB, for low-noise block, or sometimes LNC, for low-noise converter) is used in communications satellite (usually broadcast satellite) reception. ...


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  Results from FactBites:
 
QRR Series Custom Feed Horn Antennas (529 words)
These horn antennas can be designed and produced to satisfy virtually any application or equipment requirement and can be fully tested at QuinStar to determine their precise radiation patterns and gain.
Beamwidth of the majority of conical and scalar horns is in the range of 6 to 40 degrees while broad beam pyramidal and sectoral horns range from 25 to 90 degrees at half-power full width points (3 dB beamwidth).
The geometric design of the feed horns is carefully conducted to provide the best possible performance in a relatively compact size.
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