Low- and High-Frequency Extrapolation of Band-Limited Frequency Responses to Extract Delay Causal Time Responses

Frequency responses, such as S parameters, can be utilized to analyze the time-domain characteristics of circuit components and systems using the hybrid time–frequency-domain approach [1]. However, most frequency responses have a limited frequency range and no low-frequency data due to the limitations of the bandwidth of instruments and the computational resource of simulators. Using these frequen...