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[A.sub.v], [A.sub.i], or even other voltage- and current-based gain definitions such as transadmittance, [G.sub.m], or transimpedance, [Z.sub.m], are more readily handled using z-, y-, or h-parameters, while [G.sub.P] is better described via the normalized power wave relations, the S-parameters.
The concepts of transadmittance (or transconductance) and transimpedance (or transresistance) gain have application whenever the device's input and output entities have different natures.
Thus, two more gains will finally be defined, the transadmittance and the transimpedance, as the following ratios:
Starting with Equations 25 and 26 and using Equations 13 and 14, it is possible to express these transadmittance and transimpedance gains in terms of S-parameters as
If a linear CAD program could be used to evaluate the transadmittance
term (~[I.sub.in]~/~V~) above, a solution would be in hand.