This letter introduces a new method for compact macromodeling of high-speed circuits with long delays, characterized by tabulated time-domain data. The algorithm is based on partitioning the response and subsequently approximating each partition with a low-order sum-of-exponentials, delayed in time-domain. This results in a compact low-order macromodel in the form of delayed-differential equations, which can be efficiently analyzed using SPICE like simulators.

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Keywords Delayed-differential equations, Macromodeling, Measurements, Scattering parameters, Tabulated data
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Journal IEEE Microwave and Wireless Components Letters
Charest, A., Saraswat, D., Nakhla, M.S, Achar, R, & Soveiko, N. (2007). Compact macromodeling of high-speed circuits via delayed rational functions. IEEE Microwave and Wireless Components Letters, 17(12), 828–830. doi:10.1109/LMWC.2007.910468