DocumentCode
1473070
Title
A stable differentiator with a controllable signal-to-noise ratio
Author
Al-Alaoui, Mohamad Adnan
Author_Institution
Dept. of Autom. Control, Higher Inst. for Appl. Sci. & Technol., Damascus
Volume
37
Issue
3
fYear
1988
fDate
9/1/1988 12:00:00 AM
Firstpage
383
Lastpage
388
Abstract
The feedback properties of operational amplifiers are used in the construction of the differentiator. The basic concept, however is device-independent. Utilizing the tracking properties of feedback and using an integrator for a plant, the resulting error signal will approximate the derivative of the input. The system is stable for positive values of the gain. The signal-to-noise ratio (S/N) is controllable and is inversely proportional to the cubic power of the unity-gain bandwidth. The differentiator can have a higher frequency range of operation than is possible with other methods of design
Keywords
differentiating circuits; feedback; operational amplifiers; controllable signal-to-noise ratio; error signal; feedback; integrator; operational amplifiers; stable differentiator; tracking properties; Automatic control; Capacitance; Circuit noise; Feedback; Frequency; Immune system; Operational amplifiers; Proportional control; Signal to noise ratio; Thermal resistance;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.7460
Filename
7460
Link To Document