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Antenna (lat. antennae: sail yard) is an active or passive electromagnetic device, which in combination with some electronic devices transforms electromagnetic energy into spatial electromag... Read allAntenna (lat. antennae: sail yard) is an active or passive electromagnetic device, which in combination with some electronic devices transforms electromagnetic energy into spatial electromagnetic waves.Antenna (lat. antennae: sail yard) is an active or passive electromagnetic device, which in combination with some electronic devices transforms electromagnetic energy into spatial electromagnetic waves.