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Working with S, Y, Z Parameters<br />

Technical Background<br />

Figure 14-1. Mixed-Mode S Parameters<br />

The response of this differential circuits to a stimulus can be expressed with the mixed-mode<br />

S parameter matrix:<br />

where the partition labeled are the differential-mode S parameters, are the commonmode<br />

S parameter, and and the cross-mode S parameters. The and are the<br />

normalized differential-mode stimulus and response waves; and are the normalized<br />

common mode stimulus and response waves. The definition of these normalized waves are:<br />

694<br />

Eldo® User's Manual, 15.3

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