Assertion: isotropic antenna | /r/ObjectUse | used as reference antennas
Facets:
value: for the antenna gain
type: PURPOSE
value: for field strength measurements
type: PURPOSE
value: often
type: TEMPORAL
value: for backup antennas on satellites
type: PURPOSE
value: for testing other antennas
type: PURPOSE
Source sentences:
text: Nearly isotropic antennas can be constructed using multiple small elements, and are used as reference antennas for testing other antennas and for field strength measurements, and for backup antennas on satellites which work without the satellite being oriented towards a communication station.
text: However, an isotropic antenna is often used as a reference antenna for the antenna gain.