# Amplitude Characteristic

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Amplitude Characteristic

the dependence of the amplitude of a signal at the output of an apparatus or instrument on the amplitude of the signal at its input. According to the shape of the amplitude characteristic, it is possible to estimate the linearity of a system (electrical, mechanical, and other apparatus), its nonlinear distortion (in case of deviation of the amplitude characteristic from a straight line), the effectiveness of a receiver’s automatic gain control, and so on.

References in periodicals archive ?
These stable solutions coincide with the amplitude characteristic curves in Figure 2.
This section shows way of realization and simulation results with amplitude characteristic of overall filter.
From the analysis above, it is feasible to approximate an isotropic amplitude characteristic of the areal spline filter by implementing an approximating spline filter in a manner similar to the separable areal Gaussian filter.
The amplitude characteristic of previously described filter function is described by
where [DELTA][A.sub.dB] is the maximum out-of-band gain (ratio of the maximum and minimum values of the amplitude characteristic, given in decibels).
The amplitude characteristic [U.sub.dyn] (A) for quasistationary sinusoidal vibration A = [A.sub.o] sin ([omega]t) can be obtained by multiplying U by [beta] = 1/(2 x D) of resonance surpass of forced vibration.
From the amplitude L([omega]) and phase [phi]([omega]) characteristics presented in this diagram, it is seen that the system is stable, since the amplitude characteristic crosses the abscissa axis before the phase characteristic, finally decaying, goes over the value of the angle -180[degrees].
Figure 14 shows the amplitude characteristic of filter sharpening structure with amplitude change function F(H) = [3H.sup.2] - [2H.sup.3], and factor M = 2 of frequency masking subsystem filter.
The minimum losses, which enable a flat amplitude characteristic, are 18 dB.
However, if the output power is measured at the fundamental frequency, the amplitude characteristic shows that the output level increases beyond 27 dBm to saturate at 2.1 dB above this level, as shown in Figure 5.
By numerical modeling of the operation of a linear piezoceramic motor, the influence of the geometric parameters of the motor piezoelectric element on its amplitude characteristics was determined, graphic and analytical dependencies were established to select their rational ratios.
Based on the accumulated statistics of the amplitude measurements, you can compare the measurement values to the data sheets of the clock driver and the components being driven by the clock signal to verify that amplitude characteristics are within specifications.

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