If you simulate circuits that include not only analog, but also digital or switching/PWM aspects, then you know that traditional “AC” or frequency-domain analysis cannot be used for these designs.

RF designers must often deduce the causes of a circuit's malfunction using indirect measurements of its behavior. RF-design issues are impacting digital and analog designs. Integration of RF circuitry ...

Modern oscilloscopes capture, view, measure, and analyze complex RF signals in the time, frequency, and modulation domains. Time-domain analysis, the original oscilloscope function, allows users to ...