parabolic antenna

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parabolic antenna

[¦par·ə¦bäl·ik an′ten·ə]
(electromagnetism)
Antenna with a radiating element and a parabolic reflector that concentrates the radiated power into a beam.

parabolic antenna

A bowl-shaped antenna that reflects and focuses incoming radio waves into a narrow beam directed toward a receiver typically positioned above the center of the unit. Also called a "dish" or "mirror," parabolic antennas are used for satellite signals and planetary telescopes. The reflective mirror design can also emit energy such as in a flashlight or automobile headlight. See DBS.


Dish Antennas
Parabolic antennas are easily recognized by their bowl shape.
References in periodicals archive ?
But he said that substituting current 20-inch dish antennas with distributed aperture terminals could be part of a broader effort to modernize WIN-T in the coming years.
The Band IV is a rugged high-quality dish antenna covering the 4.4 - 5.0 GHz frequency range, designed for point-to-point radio relay communication.
Looking down, one sees thousands of satellite dish antennas installed on homes.
Users also can receive satellite television with the same dish antenna, although that requires receivers and subscriptions from DirecTV or Dish Networks.
Current subscribers of broadcasting satellite (BS)-based TV services can use their dish antennas to receive the new CS-based services because the new satellite is placed on a stationary orbit close to the orbit position of the BS.
Their access to the global community of science and knowledge is minimal but one third of them own a dish antenna and watch satellite channels.
Agencies can receive broadcasts if they have a C-Band dish antenna and a tuner or if they have access to facilities with satellite receiver equipment.
"The police will contact the real estate office which manages the building to remove the central dish antenna in a period not exceeding 15 days.
The Inmarsat-5 antennas are part of the company's flight-proven Gimbal Dish Antenna (GDA) systems, which enable beams to be steered to accommodate changing/increasing user demands.
One of the computer resets apparently coincided in timing with operation of the rover's high-gain dish antenna.
Designed for point-to-point backhaul links and point-to-multipoint customer premises installations, the 2' PD Series Antenna is a parabolic dish antenna for unlicensed band applications.