A convolution-based black-box approach for incorporating linear circuit blocks described by frequency-domain data into a nonlinear transient time-domain simulator

A convolution-based black-box approach is used to include linear networks represented by frequency domain information in a SPICE nonlinear analysis, yielding a flexible transient time-domain simulator capable of simulating the kinds of frequency-dependent phenomena so important in MMICs (monolithic microwave integrated circuits) and modern high-speed digital circuits. The main novelties of this approach are the time-domain representation of the linear circuit and its implementation in a numerical-integration-based time-domain simulator such as SPICE. Simulated examples validate the technique by comparison with SPICE and with measurement.<>