Title :
Analysis of the step and ramp response of a feedback gain-control system
Author_Institution :
University of Manchester, Electrical Engineering Laboratories, Manchester, UK
fDate :
3/1/1978 12:00:00 AM
Abstract :
Gain-control systems are used to improve the performance of communication links that are subject to variation of received signal power, and in a variety of techniques designed to increase the signal/noise ratio. The system described here is intended to operate at audio frequencies with the minimum of distortion, and the gain is controlled by the amplitude of a high-frequency (50 kHz) carrier superimposed on the audio signal. Two modes of operation have been investigated, and their response when subjected to step and ramp control signals is analysed mathematically. Theoretical results are expressed in graphical form and are compared with measurements obtained from experimental prototype circuits
Keywords :
audio-frequency amplifiers; feedback; gain control; step response; telecommunication systems; audio frequencies; communication links; feedback gain control system; ramp response; step response;
Journal_Title :
Electronic Circuits and Systems, IEE Journal on
DOI :
10.1049/ij-ecs.1978.0010
