Summary: | For a microwave engineer, “An active antenna is an activemicrowave circuit in which the output or input port is free spaceinstead of a conventional 50 interface.” For an antenna designer,“Active antenna is an antenna that possesses built-in signal-andwave-processing capabilities such as mixing and amplification.” Insimple words an active integrated antenna can provide certaincircuit functions such as resonance, filtering, and duplexing, inaddition to its original role as a radiating element.
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