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- Parabolic_antenna abstract "A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. The main advantage of a parabolic antenna is that it has high directivity. It functions similarly to a searchlight or flashlight reflector to direct the radio waves in a narrow beam, or receive radio waves from one particular direction only. Parabolic antennas have some of the highest gains, that is, they can produce the narrowest beamwidths, of any antenna type. In order to achieve narrow beamwidths, the parabolic reflector must be much larger than the wavelength of the radio waves used, so parabolic antennas are used in the high frequency part of the radio spectrum, at UHF and microwave (SHF) frequencies, at which the wavelengths are small enough that conveniently-sized reflectors can be used.Parabolic antennas are used as high-gain antennas for point-to-point communications, in applications such as microwave relay links that carry telephone and television signals between nearby cities, wireless WAN/LAN links for data communications, satellite communications and spacecraft communication antennas. They are also used in radio telescopes. The other large use of parabolic antennas is for radar antennas, in which there is a need to transmit a narrow beam of radio waves to locate objects like ships, airplanes, and guided missiles. With the advent of home satellite television receivers, parabolic antennas have become a common feature of the landscapes of modern countries.".
- Parabolic_antenna thumbnail Erdfunkstelle_Raisting_2.jpg?width=300.
- Parabolic_antenna wikiPageExternalLink dish-with-biquad-feed.
- Parabolic_antenna wikiPageExternalLink www.dishpointer.com.
- Parabolic_antenna wikiPageExternalLink index.html.
- Parabolic_antenna wikiPageExternalLink parabolic_reflector.php.
- Parabolic_antenna wikiPageExternalLink www.sat-direction.com.
- Parabolic_antenna wikiPageExternalLink watch?v=785kRIZ7aeI.
- Parabolic_antenna wikiPageExternalLink parabolic_antenna.html.
- Parabolic_antenna wikiPageID "208264".
- Parabolic_antenna wikiPageRevisionID "606479882".
- Parabolic_antenna align "center".
- Parabolic_antenna caption ""Orange peel" antenna for air search radar, Finland.".
- Parabolic_antenna caption "A satellite television dish, an example of an offset fed dish.".
- Parabolic_antenna caption "ASR-9 Airport surveillance radar antenna.".
- Parabolic_antenna caption "Air traffic control radar antenna, near Hannover, Germany.".
- Parabolic_antenna caption "Cassegrain satellite communication antenna in Sweden.".
- Parabolic_antenna caption "Early cylindrical parabolic antenna, 1931, Nauen, Germany.".
- Parabolic_antenna caption "Offset Gregorian antenna used in the Allen Telescope Array, a radio telescope at the University of California at Berkeley, USA.".
- Parabolic_antenna caption "Shrouded microwave relay dishes on a communications tower in Australia.".
- Parabolic_antenna caption "Vertical "orange peel" antenna for military height finder radar, Germany.".
- Parabolic_antenna hasPhotoCollection Parabolic_antenna.
- Parabolic_antenna header "Dish parabolic antennas".
- Parabolic_antenna header "Shaped-beam parabolic antennas".
- Parabolic_antenna image "ASR-9 Radar Antenna.jpg".
- Parabolic_antenna image "ATA-gregorian.jpg".
- Parabolic_antenna image "Antenna 03.JPG".
- Parabolic_antenna image "Antenna_radar_L-band_TAR_Finland.JPG".
- Parabolic_antenna image "Bundesarchiv Bild 102-12453, Nauen, Richtungsweiser für Funkwellen.jpg".
- Parabolic_antenna image "Deister-radar.jpg".
- Parabolic_antenna image "Mps-16-1.jpg".
- Parabolic_antenna image "Parabolic antennas on a telecommunications tower on Willans Hill.jpg".
- Parabolic_antenna image "SuperDISH121.jpg".
- Parabolic_antenna width "101".
- Parabolic_antenna width "105".
- Parabolic_antenna width "108".
- Parabolic_antenna width "160".
- Parabolic_antenna width "168".
- Parabolic_antenna width "180".
- Parabolic_antenna width "84".
- Parabolic_antenna width "96".
- Parabolic_antenna subject Category:Radio_frequency_antenna_types.
- Parabolic_antenna subject Category:Satellite_broadcasting.
- Parabolic_antenna type Artifact100021939.
- Parabolic_antenna type Equipment103294048.
- Parabolic_antenna type Instrumentality103575240.
- Parabolic_antenna type Object100002684.
- Parabolic_antenna type PhysicalEntity100001930.
- Parabolic_antenna type Satellite104137444.
- Parabolic_antenna type Satellites.
- Parabolic_antenna type Whole100003553.
- Parabolic_antenna comment "A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. The main advantage of a parabolic antenna is that it has high directivity. It functions similarly to a searchlight or flashlight reflector to direct the radio waves in a narrow beam, or receive radio waves from one particular direction only.".
- Parabolic_antenna label "Antena paraboliczna".
- Parabolic_antenna label "Antena parabólica".
- Parabolic_antenna label "Antena parabólica".
- Parabolic_antenna label "Antenna parabolica".
- Parabolic_antenna label "Antenne parabolique".
- Parabolic_antenna label "Parabolantenne".
- Parabolic_antenna label "Parabolic antenna".
- Parabolic_antenna label "Schotelantenne".
- Parabolic_antenna label "Зеркальная антенна".
- Parabolic_antenna label "طبق أقمار صناعية".
- Parabolic_antenna label "パラボラアンテナ".
- Parabolic_antenna sameAs Parabolická_anténa.
- Parabolic_antenna sameAs Parabolantenne.
- Parabolic_antenna sameAs Antena_parabólica.
- Parabolic_antenna sameAs Antenne_parabolique.
- Parabolic_antenna sameAs Antena_parabola.
- Parabolic_antenna sameAs Antenna_parabolica.
- Parabolic_antenna sameAs パラボラアンテナ.
- Parabolic_antenna sameAs Schotelantenne.
- Parabolic_antenna sameAs Antena_paraboliczna.
- Parabolic_antenna sameAs Antena_parabólica.
- Parabolic_antenna sameAs m.01dk_v.
- Parabolic_antenna sameAs Q4928259.
- Parabolic_antenna sameAs Q4928259.
- Parabolic_antenna sameAs Parabolic_antenna.
- Parabolic_antenna wasDerivedFrom Parabolic_antenna?oldid=606479882.
- Parabolic_antenna depiction Erdfunkstelle_Raisting_2.jpg.
- Parabolic_antenna isPrimaryTopicOf Parabolic_antenna.