Oscilloscope and signal analysis method

An oscilloscope, comprising:

• a signal input circuit configured to receive M input signals, wherein M is an integer greater than or equal to 1, wherein at least one of the input signals is a signal comprising at least two carriers;
• a switching matrix circuit comprising M switching matrix inputs and K switching matrix outputs, wherein K is an integer greater than or equal to 2, wherein each of the M switching matrix inputs is associated with one of the M input signals, respectively, wherein the switching matrix circuit is configured to selectively forward at least one input signal from at least one of the switching matrix inputs to the switching matrix outputs and to forward the signal comprising the at least two carriers to at least two switching matrix outputs, thereby obtaining at least two copies or representatives of the signal comprising the at least two carriers;
• and
• a downconverter circuit connected to the switching matrix outputs, the downconverter circuit comprising a local oscillator and at least two downconverter sub-circuits, wherein the local oscillator is configured to generate a local oscillator signal,
• wherein a first one of the at least two downconverter sub-circuits is configured to down-convert a first signal component of the signal comprising the at least two carriers based on the local oscillator signal, wherein the first signal component comprises a first one of the least two carriers, and
• wherein a second one of the at least two downconverter sub-circuits is configured to down-convert a second signal component of the signal comprising the at least two carriers based on the local oscillator signal, wherein the second signal component comprises a second one of the least two carriers.