small-signal parameter

small-signal parameter

[′smȯl ¦sig·nəl pə′ram·əd·ər]
(electronics)
One of the parameters characterizing the behavior of an electronic device at small values of input, for which the device can be represented by an equivalent linear circuit.
References in periodicals archive ?
Typical small-signal parameter measurements are shown in Figure 5 and performance data for various models is presented in Table 1.
In the development process, simulations were used, together with microwave measurements, to optimize small-signal parameters and third-order intermodulation products.
Using small-signal parameters, the start-up condition can be checked, and with the transistor's large-signal S-parameters at a certain input or output power, the oscillator can be designed the way that the true loop power will meet the large-signal estimate.
The small-signal parameters of the transistor equivalent circuit are listed in Table 1.
In this article, small-signal parameters are defined, a simple unstable RLC circuit for which the criterion of Equations 1 and 2 fails is analyzed, conditions under which it can be applied are presented and the Nyquist stability criterion is discussed.
A DC large-signal model defines the set of nonlinear equations describing the behavior of the drain-source current, transconductance and output conductance, which LASIMO optimizes to match the corresponding measured, bias-dependent small-signal parameters. Similarly, a capacitance large-signal model defines the nonlinear equations describing the behavior of the gate-source capacitance and gate-drain capacitance, which the program optimizes to match the corresponding measured, bias-dependent small-signal parameters.
An automatic data-acquisition program with the capability to extract the heterostructure FET (HFET) small-signal parameters directly is presented.
Since small-signal parameters are derivatives of a nonlinear function, accuracy cannot be ensured by this method by deriving the small-signal parameters.