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3D Simulations for Signal Integrity

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Causality - Example<br />

� Another way to fix causality is to use a time<br />

domain simulator which corrects <strong>for</strong> causality<br />

errors<br />

� Nexxim does exactly this<br />

� Nexxim uses a state-space p method of creating g a<br />

polynomial fit to the S-parameters<br />

� This state-space fit is inherently causal

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