1. Synoptic diagram of an "active" antenna
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Depending on the systems that use it and the operating modes required, the active antenna can be a switched transmit/receive antenna, or a transmit or receive antenna only.
ExampleRadars sequence transmission and reception periods, and can therefore use a switched antenna.
In telecommunications systems, transmission and reception are often simultaneous, and are not compatible with a single active antenna: two separate antennas are required.
It may also be the case that only the transmit or receive function is required locally.
The explanations given in this article generally concern active transmit/receive switched antennas, but are directly applicable to antennas operating...
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Synoptic diagram of an "active" antenna
Operational benefits of active antennas
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