beamwidth

См. также в других словарях:

• Beamwidth — In telecommunication, the term beamwidth has the following meanings: 1. In the radio regime, of an antenna pattern, the angle between the half power ( 3 dB) points of the main lobe, when referenced to the peak effective radiated power of the main …   Wikipedia

• beamwidth — noun The width (or the angle) of a beam of radiation …   Wiktionary

• beamwidth — /ˈbimwɪdθ/ (say beemwidth) noun a measurement of the area in which a directional transmitting device is effective, commonly taken to be the angle formed by the transmitter and any two points equidistant from it, at which the power received is… …  

• beamwidth — ˈ ̷ ̷ ˌ ̷ ̷ noun : the angular diameter of the region adjoining an antenna through which the reception of the signal is best …   Useful english dictionary

• radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

• 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

• HRS antenna — HRS type antennas are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). Contents 1 History of HRS design 2 Nomenclature 3 A versatile antenna type …   Wikipedia

• Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

• Antenna gain — is defined as the ratio of the radiation intensity of an antenna in a given direction, to the intensity of the same antenna as it radiates in all directions (isotropically). Since the radiation intensity of an isotropically radiated power is… …   Wikipedia

• HRS type antennas — are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). History of HRS design HRS antennas were discovered during the 1920s, and as such were not originally intended for voice and music… …   Wikipedia

• Single Vegetative Obstruction Model — The ITU Single Vegetative Obstruction Model is a Radio propagation model that quantitatively approximates the attenuation due to the vegetation in the middle of a telecommunication link. Applicable to/under conditionsThe model is applicable to… …   Wikipedia