scholarly journals Operational Amplifiers and Active Filters: A Bond Graph Approach

10.5772/5400 ◽  
2008 ◽  
Author(s):  
Gilberto Gonzalez ◽  
Roberto Tapi
Keyword(s):  
Bond Graph ◽  
Active Filters ◽  
Operational Amplifiers

Design of Low-Pass Active Filters Using Matlab

1998 ◽  
Vol 35 (3) ◽  
pp. 274-278
Author(s):  
Marcelo Basilio Joaquim
Keyword(s):  
Programming Language ◽  
Active Filters ◽  
Operational Amplifiers ◽  
Filter Structure ◽  
Low Pass ◽  
Low Sensitivity ◽  
Matlab Programming

In this paper a program developed in MATLAB programming language to aid in the design of all-pole active filters using operational amplifiers is presented. The filter structure chosen was the Sallen-Key that furnishes a filter with low sensitivity to element tolerances and it is easy to implement in hardware.

A bicausal bond graph representation of operational amplifiers

2003 ◽  
Vol 217 (1) ◽  
pp. 49-58 ◽  
Author(s):  
P J Gawthrop ◽  
D Palmer
Keyword(s):  
Operational Amplifier ◽  
Mechanical Systems ◽  
Graph Model ◽  
Bond Graph ◽  
Electromechanical System ◽  
Graph Representation ◽  
Operational Amplifiers ◽  
Electronic Circuits ◽  
Graph Interpretation ◽  
Virtual Earth

The virtual earth concept, well known to designers of active electronic circuits with operational amplifier components, is shown to have a novel bicausal bond graph interpretation. This leads to simplified bond graph modelling of such circuits. Some simple operational amplifier circuits, together with a more complex active filter, are used to illustrate the approach. A complex electromechanical system shows that the method is useful in creating a unified bond graph model of systems involving both analogue electronic and mechanical systems.

scholarly journals Distortion Analysis of Active Filters

1988 ◽  
Vol 13 (2) ◽  
pp. 113-132 ◽  
Author(s):  
Umesh Kumar ◽  
Sushil Kumar Shukla
Keyword(s):  
Volterra Series ◽  
General Procedure ◽  
Active Filters ◽  
Intermodulation Distortion ◽  
Operational Amplifiers ◽  
Large Signal ◽  
High Frequencies ◽  
Analysis Technique ◽  
Distortion Analysis ◽  
Nonlinear Performance

Second order active filters using single and two operational amplifiers at high frequencies and/or large-signal levels are investigated for their nonlinear performance. A general procedure using the Volterra series in presented regarding intermodulation distortion. Computer results by implementation in a program “Distortion Analysis” demonstrate the accuracy of the analysis technique.

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