How is an upload signal processed by an inverting linear transponder?
The signal is detected and remodulated on the reverse sideband
The signal is passed through a nonlinear filter
The signal is reduced to I and Q components, and the Q component is filtered out
The signal is mixed with a local oscillator signal and the difference product is transmitted✓پاسخ درست
توضیح
A linear transponder does not detect or demodulate anything; it translates a block of spectrum by mixing it with a local oscillator, and an inverting transponder transmits the difference product, which is the spectrum-reversed version of the uplink. Detection and remodulation, nonlinear filtering, or discarding an I/Q component would all destroy the linearity that lets the transponder carry many simultaneous signals of any mode.