Assertion: omnidirectional antenna | /r/HasProperty | a class of antenna
Facets:
value: with power
type: OTHER
value: in radio communication
type: OTHER
Source sentences:
text: In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.