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You can use the RF Toolbox™ after characterizing the backplane with N-port network for
signal integrity analysis. For more information, see the
Use RF Toolbox™ to import N-port S-parameters representing high-speed backplane channels, and converts 16-port S-parameters to 4-port S-parameters to model the channels and the crosstalk between the channels.
Use RF Toolbox™ to model a differential high-speed backplane channel using rational functions. This type of model is useful to signal integrity engineers, whose goal is to reliably connect high-speed semiconductor devices with, for example, multi-Gbps serial data streams across backplanes and printed circuit boards.
Use RF Toolbox™ functions to calculate the TDR (Time-Domain Reflectometry) and TDT (Time-Domain Transmission) of a differential high-speed backplane channel.
Use Simulink® to simulate a differential high-speed backplane channel. The example first reads a Touchstone® data file that contains single-ended 4-port S-parameters for a differential high-speed backplane and converts them to 2-port differential S-parameters. It computes the transfer function of the differential circuit and uses the rationalfit function to fit a closed-form rational function to the circuit's transfer function. Then, the example converts the poles and residues of the rational function object into the numerators and denominators of the Laplace Transform S-Domain transfer functions that it uses to build the Simulink model of the rational function object.
Use RF Toolbox™ functions to generate a Verilog-A module that models the high-level behavior of a high-speed backplane. First, it reads the single-ended 4-port S-parameters for a differential high-speed backplane and converts them to 2-port differential S-parameters. Then, it computes the transfer function of the differential circuit and fits a rational function to the transfer function. Next, the example exports a Verilog-A module that describes the model. Finally, it plots the unit step response of the generated Verilog-A module in a third-party circuit simulation tool.
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