In a plane containing the direction of the maximum of a beam, the angle between the two directions in which the radiation intensity is one half the maximum value of the beam.
The angle in degrees over which a directive antenna will provide a gain within 3 dB of the value in the direction of maximum gain.
The angle or conical shape of the beam that the antenna projects. Since larger antennas have narrower beamwidths, they can pinpoint satellites in space or in dense traffic areas on the earth with more precision.
The width of "view" of an antenna (where the antenna in question is a receiving antenna). Beamwidth is measured in degrees between two points known as the half-power points either side of the point of maximum signal strength.
(BEAM WIDTH) - The angle between the directions, on either side of the axis, at which the intensity of the radio frequency field drops to one-half the value it has on the axis. [] Synonymous with half-power beam width. See also BEAM DIAMETER.
The angular coverage of an antenna beam. Earth station beams are usually specified at the half-power (or -3 dB) point. Satellite beams are based on the area to be covered.
A measure for the pointing accuracy of a satellite antenna, in degrees. Large antennas have smaller beamwidths, while smaller antennas have larger beamwidths.
A measure of the ability of an antenna to focus signal energy towards a particular direction in space (e.g. towards the satellite for a ground-based transmitting antenna), or to collect signal energy from a particular direction in space (e.g. from the satellite for a ground-based receiving antenna). The beamwidth is measured in a plane containing the direction of maximum signal strength. It is usually expressed as the angular separation between the two directions in which the signal strength is reduced to one-half of the maximum value (the -3 db half-power points).
The angle or conical shape of the beam the antenna projects. Large antennas have narrower beamwidths and can pinpoint satellites in space or dense traffic areas on the earth more precisely. Tighter beamwidths thus deliver higher levels of power and thus greater communications performance.
The angle of signal coverage provided by an antenna. Beamwidth typically decreases as antenna gain increases.
In an antenna, the angular sector in degrees of the radiated power pattern at the half-power (3dB) point.
The width of the sent beam, discounting sidelobes, measured in degrees.
The angular width of the main lobe of an antenna radiation pattern as measured between predetermined points on the lobe, usually the half-power (-3 dB) points. Large antennas have narrower beamwidths and can pinpoint satellites in space or dense traffic areas on the earth more precisely. Tighter beamwidths thus deliver higher levels of power and thus greater communications performance.
The angle or conical shape of the tranmission beam the antenna projects. Large antennas have narrower beamwidths and can pinpoint satellites in space or dense traffic areas in terrestrial situations more precisely. Tighter beamwidths thus deliver higher levels of power with increased performance characteristics and less chance of causing interference on adjacent satellites or terrestrial services.
An angular measure, in degrees (of a circle), used to describe the width of the RF energy radiated from an antenna. It is also a measure of the width of an antenna pattern.