Assertion: plasma antenna | /r/HasProperty | a type of radio antenna
Facets:
value: in development
type: TEMPORAL
Source sentences:
text: A plasma antenna is a type of radio antenna currently in development in which plasma is used instead of the metal elements of a traditional antenna.
text: A plasma antenna is a type of radio antenna in which the plasma is used as a development element instead of the metal elements that are used in traditional antenna.