Assertion: antenna's beam | /r/CapableOf | limit the aperture efficiency
Facets:
value: to only 55–60%
type: OTHER
Source sentences:
text: A disadvantage of this type is that the feed and its supports block some of the beam, which limits the aperture efficiency to only 55–60%.
text: A disadvantage of this type is that the feed and its supports block some of the beam, which limits the aperture efficiency to only 55–60%.