“beamwidth”的概念、定义、翻译、参考文献-科学参考

beamwidth

Astronomy

A measure of the angular width of a radio telescope beam. Full-width at half-maximum (FWHM) or the half-power beamwidth (HPBW) is the width of the beam at a point where the power received from a point source is half its peak value. As a rule, the smaller the beamwidth, the better the resolution of the telescope.

Electronics and Electrical Engineering

A parameter used to specify the width of the maximum beam of an antenna. It is usually the half-power beamwidth, which is the angle between the two directions in which the radiation intensity is one-half the maximum value of the main beam, where the direction of the maximum and the half-power points are in the same plane. If it is used otherwise, such as the angle between the 10-decibel points, the specific points on the antenna pattern should be described.

单词	beamwidth
释义	beamwidth Astronomy A measure of the angular width of a radio telescope beam. Full-width at half-maximum (FWHM) or the half-power beamwidth (HPBW) is the width of the beam at a point where the power received from a point source is half its peak value. As a rule, the smaller the beamwidth, the better the resolution of the telescope. Electronics and Electrical Engineering A parameter used to specify the width of the maximum beam of an antenna. It is usually the half-power beamwidth, which is the angle between the two directions in which the radiation intensity is one-half the maximum value of the main beam, where the direction of the maximum and the half-power points are in the same plane. If it is used otherwise, such as the angle between the 10-decibel points, the specific points on the antenna pattern should be described.
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