“We can bridge the gap between vector network analyzers that work in the frequency domain, and Simulink and EDA tools that want to work in the time domain,” Warwick said. Instead, engineers can model transmission lines as rational functions, which The Mathworks claims are faster and more accurate than traditional approaches like inverse Fast Fourier Transforms (IFFTs). RF Toolbox 2 claims to eliminate the need for manually building transmission-line models from measured data to test I/O circuit designs. “We've added those features to version 2, opening it up to the signal integrity community.” “Signal integrity engineers couldn't make much use of version 1, because it didn't support broadband time domain functions,” he said. RF Toolbox 1 works only in the frequency domain, noted Colin Warwick, technical marketing manager for the RF Toolkit. The original RF Toolbox 1, introduced in 2004, is used for wireless communications design. It outputs rectangular, polar, and Smith charts. The RF Toolbox extends Matlab with functions and a graphical user interface for debugging, modeling, analyzing, and visualizing networks of RF components. As a result, the company claims, engineers can significantly reduce the time needed to develop I/O circuitry for high-speed digital systems. 13) is rolling out the RF Toolbox 2, which adds time-domain capabilities to this Matlab add-on package. Providing a signal-integrity analysis capability for broadband backplanes and pc-board traces, The Mathworks this week (Dec.
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