Method for characterizing delay of frequency translation devices

A method for characterizing delay of a frequency translation device versus frequency, comprising:

• applying a stimulus signal to a first port of the frequency translation device, while a second port of the frequency translation device is coupled to a delay element having a known delay and having a reflective termination, and while a drive signal is applied to a third port of the frequency translation device;
• obtaining a time domain reflection response to the stimulus signal;
• isolating a segment of the time domain reflection response corresponding to a return signal from the reflective termination;
• and
• performing an inverse frequency transform on the isolated segment of the time domain reflection response to provide delay characteristics of the frequency translation device versus frequency.

A method for characterizing delay of a frequency translation device versus frequency, comprising:

• applying a stimulus signal to a first port of the frequency translation device, while a second port of the frequency translation device is coupled to a delay element having a reflective termination, and while a drive signal is applied to a third port of the frequency translation device, the delay element having a known delay;
• obtaining a time domain reflection response to the stimulus signal;
• applying a gate to isolate a segment of the time domain reflection response corresponding to a return signal from the reflective termination;
• frequency transforming the time domain reflection response and inverse frequency transforming the gate;
• and
• convolving the frequency transform of the time domain reflection response with the inverse frequency transform of the gate to provide delay characteristics of the frequency translation device versus frequency.

A method for characterizing delay of a frequency translation device versus frequency, comprising:

• applying a stimulus signal to a first port of the frequency translation device, while a second port of the frequency translation device is coupled to a delay element having a reflective termination, and while a drive signal is applied to a third port of the frequency translation device;
• obtaining a frequency domain reflection response to the stimulus signal;
• designating a gate according to a delay of the delay element and an absolute delay of the frequency translation device;
• and
• convolving the frequency domain reflection response with an inverse frequency transform of the designated gate to provide delay characteristics of the frequency translation device versus frequency.