Transformation of LC-filters to active RC-circuits via the two-graph method

Pierzchala, Marian; Fakhfakh, Mourad

doi:10.1016/j.mejo.2011.05.003

Cited by 24 publications

(18 citation statements)

References 9 publications

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“…It is possible to describe the relationship of voltages-currents that belong to the tree and co-tree branches of any network using fundamental loop matrix (B)-fundamental cut-set matrix (Q) [ 13]. In these matrices, a voltage-current that belongs to the co-tree-tree branches is equal to the total of the voltages-currents in the tree-co-tree branches which are connected to that as given in (1).…”

Section: Matrix Representation Of Networkmentioning

confidence: 99%

“…As it was demonstrated in [11][12][13][14], it is possible to transform a LC network to its equivalent RC circuit. Fig.…”

Section: Transformation Of Lc Network To Equivalent Rc Filtersmentioning

confidence: 99%

“…So far, some alternative methods based on passive LC ladder prototype have been presented. Designing active filters based on passive LC ladder prototype are mostly partitioned to integrator-based analysis [6], using the simultaneous single and double passive elements [7][8][9][10], symbolic analysis and graph-based techniques [11][12][13][14][15][16][17][18]. Among these approaches, the graph-based technique has not received enough attention.…”

Section: Introductionmentioning

confidence: 99%

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New systematic two‐graph‐based approach of active filters employing multiple output current controlled conveyors

Fani

Farshidi

2013

IET Circuits, Devices & Systems

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A new method for the synthesis of active RC circuits employing multiple output current controlled conveyors (Mo-CCCIIs) is presented here. A new graph is proposed for Mo-CCCII and the application of this graph in active filter design is studied. The obtained active filter uses Mo-CCCIIs as active devices and only capacitors as passive elements without the need of passive resistors. To generalise the proposed method, an algorithm is presented, which converts the loop-cut-set matrices of the passive LC filter prototypes to the proper matrices for Mo-CCCII-based active filters. The new matrices characterise the connections of the equivalent Mo-CCCII-based active filter. The presented algorithm is programmed in MATLAB, so the matrix manipulation is done very quickly. Also, Hspice simulation result of the synthesised active filter is given to confirm the viability of this approach.

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Section: Matrix Representation Of Networkmentioning

confidence: 99%

“…As it was demonstrated in [11][12][13][14], it is possible to transform a LC network to its equivalent RC circuit. Fig.…”

Section: Transformation Of Lc Network To Equivalent Rc Filtersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New systematic two‐graph‐based approach of active filters employing multiple output current controlled conveyors

Fani

Farshidi

2013

IET Circuits, Devices & Systems

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“…The circuit is taken from [7], it is mainly formed with six CCII-s. The CCII to be used in this filter is the conventional CCII presented in Figure 8 …”

Section: B Example #2: a Bi-band Filtermentioning

confidence: 99%

On the optimal design of CC-based active filters

Sallem

Fakhfakh

Tlelo‐Cuautle

et al. 2012

7th International Conference on Design &Amp; Technology of Integrated Systems in Nanoscale Era

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In this paper we highlight drawbacks of the use of a priori optimized current conveyor (CC) as basic building block of active circuits. We use the optimization based technique to act directly on the ports of the current conveyors encompassing the overall active circuits in order to make them behave as 'ideal' as possible by minimizing their parasitic effects, offsets, etc. Three active circuits are presented, namely two active filters and a simulated inductance. Obtained results are given and compared to the ideal ones and also to those reached using an 'optimized' building block.

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“…In general, most sensitivity analysis techniques require input as a transfer function that can be obtained by performing linear algebraic or graph operations. Several symbolic techniques have been developed to derive analytical expressions or to transform certain characteristics of a linear network [2], [3], [4], [5], [6], [7], [8]. Generally, the analytical sensitivity analysis would be much easier by using a symbolic approach than a numerical approach where computation cost is a key concern.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Methods of Graphical Solution of Symbolic Sensitivity

Brtnik

2019

2019 29th International Conference Radioelektronika (RADIOELEKTRONIKA)

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Signal-flow graph (SFG) technique is a very useful tool for a hand analysis of a small and mediumsize networks and/or subnetworks of large systems. Last days, the SFG's have been effectively used for the sensitivity solutions, too. This paper describes the comparison between two graph methods for derivation transfer function: the nullor modified Coates flow graph symbolic analysis and the transformation graphs for symbolic analysis. As is given, in some cases the transformation graphs are more useful thanks to their clarity than standard solving methods.

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Transformation of LC-filters to active RC-circuits via the two-graph method

Cited by 24 publications

References 9 publications

New systematic two‐graph‐based approach of active filters employing multiple output current controlled conveyors

New systematic two‐graph‐based approach of active filters employing multiple output current controlled conveyors

On the optimal design of CC-based active filters

Comparison of the Methods of Graphical Solution of Symbolic Sensitivity

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