Okay, so I know that a single antenna can be designed to transmit/receive multiple frequencies. But can an antenna send/receive multiple signals at the same time? I don't mean send and receive at the same time, I mean receive or send multiple frequencies at the same time. Like if I wanted to send two signals, would I need two antennas? Or could I gang two properly designed radio circuits to the same antenna?
EDIT: Oh, I also don't mean mixing two different data signals so that fits into a single radio signal. I mean physically transmitting two different frequencies simultaneously with the same antenna.
EDIT: Oh, I also don't mean mixing two different data signals so that fits into a single radio signal. I mean physically transmitting two different frequencies simultaneously with the same antenna.
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