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Realization of Universal High Order Filter Using CFA

Huang Man-chi

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Abstract

A circuit of high order filter using CFA is presented based on the signal-flow graph.The configuration of circuit which is consisted of CFA,resistances and capacitances can realize lowpass,bandpass,highpass,notch filters by only changing impedances.As an application of the proposed circuit,the realization of a four-order bandpass filter and a five-order highpass filter are proved using PSPICE simulations,which verify the proposed configuration is applicable.

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What this paper is about

A circuit of high order filter using CFA is presented based on the signal-flow graph.The configuration of circuit which is consisted of CFA,resistances and capacitances can realize lowpass,bandpass,highpass,notch filters by only changing impedances.As an application of the proposed circuit,the realization of a four-order bandpass filter and a five-order highpass filter are proved using PSPICE simulations,which verify the proposed configuration is applicable.

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Available abstract

A circuit of high order filter using CFA is presented based on the signal-flow graph.The configuration of circuit which is consisted of CFA,resistances and capacitances can realize lowpass,bandpass,highpass,notch filters by only changing impedances.As an application of the proposed circuit,the realization of a four-order bandpass filter and a five-order highpass filter are proved using PSPICE simulations,which verify the proposed configuration is applicable.

Key concepts: High-pass filter, Band-pass filter, Signal-flow graph, Low-pass filter, Electronic engineering, Filter (signal processing), Realization (probability), Electronic filter topology

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