Assertion: antenna's beam | /r/HasProperty | narrow
Facets:
Source sentences:
text: It produces a fan-shaped beam, which is narrow in the plane of the flared sides, but wide in the plane of the narrow sides.
text: This antenna produced a narrow "pencil" beam only 2.2° wide.
text: Conservation of energy dictates that high gain antennas must have narrow beams.
text: Reflector antennas are generally used to produce narrow beams for geostationary satellites and earth stations.