Signal Flow Graph Synthetical Implement the Current-Mode Multifunction Filter Based on CDTA

In this paper, a signal flow graph structure of current-mode multifunction filter using current differencing transconductance amplifier (CDTA) is presented. The proposed configuration is comprised of two grounded capacitors and four CDTAs. They exhibit low-input and high-output impedances, which is...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 530-531; no. Advances in Measurements and Information Technologies; pp. 1100 - 1107
Main Authors Huang, Xin Hang, Kuang, Jun, He, Hai Zhen, Cao, Mei Li, Liu, Xin
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.02.2014
Subjects
Amplifiers
Bandwidth
Capacitors
Integrated circuits
Resonant frequency
Signal flow graphs
Simulation
Signal Flow Graph
Current Mode
Multifunction Filter
Current Differencing Transconductance Amplifier (CDTA)
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Summary:In this paper, a signal flow graph structure of current-mode multifunction filter using current differencing transconductance amplifier (CDTA) is presented. The proposed configuration is comprised of two grounded capacitors and four CDTAs. They exhibit low-input and high-output impedances, which is very convenient for integrated circuit implementation. The presented filter configuration can realize all the standard filter functions simultaneously, lowpass (LP), bandpass (BP), highpass (HP), bandstop (BS) and allpass (AP), without any component matching conditions. The natural frequency () and the bandwidth () of the proposed filter can be electronically tuned by varying the bias current of the CDTA. PSPICE simulation results are included to confirm the theory.
Bibliography:Selected, peer reviewed papers from the 2014 International Conference on Sensors, Instrument and Information Technology (ICSIIT 2014), January 18-19, 2014, Guangzhou, China
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ISBN:3038350397
9783038350392
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.530-531.1100