Amplitude-Frequency Characteristic


Also found in: Acronyms.

Amplitude-Frequency Characteristic

 

the dependence of the amplitude of a sinusoidal oscillation on its frequency at the output of an apparatus. The characteristic is measured by applying an oscillation of constant amplitude and variable frequency to the input of the apparatus in the linear mode. The amplitude-frequency characteristic is often called simply the frequency characteristic. For ease of visualization it is plotted in the form of a curve; the amplitudes or relative amplitudes are laid off along the vertical axis (often in decibels), and the frequencies (sometimes on a logarithmic scale) along the horizontal axis. In electrical engineering, radio technology, and other technical fields, the amplitude-frequency characteristic yields various parameters (frequency pass band, selectivity, and others) by which the operation of apparatus and devices can be assessed.

References in periodicals archive ?
Effect of Supporting Stiffness on Amplitude-Frequency Characteristic of Pressure Pipe Segment.
The Rayleigh-Ritz procedure and Perturbation methods are used to study amplitude-frequency characteristics of prestressed circular cylindrical shells.
The amplitude-frequency characteristics SR4D of the whole pick-up (sensor with amplifier) is shown in Fig.
Baseed on the accelerations signals, amplitude-frequency characteristics were determined.

Full browser ?