. The Bell System technical journal . Fig. 2 — Two terminal impedance measurements for determination of two-portparameters. ^ R. L. Wallace and W. J. Pietenpol, Some Circuit Properties of n-p-n Transis-tors, Proc. , 39, pp. 753-67, July, 1951. THE DESIGN OF TETRODE TRANSISTOR AMPLIFIERS 817 From the approach to the problem taken in this paper, one solves firstfor the maximum power gain and subsequently determines the optimumterminations. It turns out that the solutions leads to explicit relation-ships for optimum performance and terminations and also leads tocharts from which power gains
. The Bell System technical journal . Fig. 2 — Two terminal impedance measurements for determination of two-portparameters. ^ R. L. Wallace and W. J. Pietenpol, Some Circuit Properties of n-p-n Transis-tors, Proc. , 39, pp. 753-67, July, 1951. THE DESIGN OF TETRODE TRANSISTOR AMPLIFIERS 817 From the approach to the problem taken in this paper, one solves firstfor the maximum power gain and subsequently determines the optimumterminations. It turns out that the solutions leads to explicit relation-ships for optimum performance and terminations and also leads tocharts from which power gains and input impedance can be read for anyterminations. In all expressions to be developed, the h parameters are used. Pre-cisely the same expressions can be obtained for zs, ys, or ^s providedthat one uses the corresponding quantities in the table of Fig. 1. The maximum power gain is a quantity of primary interest in tran-sistors since the transistor ordinarily has a resistive component in itsdriving-point impedance. Thus voltage or
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