| that part of a radio transmitting or receiving system which is designed to provide the required coupling between a transmitter or a receiver and the medium in which the radio wave propagates
NOTE 1 – In practice, the terminals of the antenna or the points to be considered as the interface between the antenna and the transmitter or receiver should be specified.
NOTE 2 – If a transmitter or receiver is connected to its antenna by a feed line, the antenna may be considered to be a transducer between the guided waves of the feed line and the radiated waves in space.
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