Assertion: antenna's area | /r/HasProperty | proportional
Facets:
value: to the gain
type: PURPOSE
value: for a given frequency
type: OTHER
Source sentences:
text: The aperture of a Yagi is round and its area is proportional to the gain.
text: =\mathrm {Gain(dBi)} -2.15} For a given frequency, the antenna's effective area is proportional to the power gain.