Abstract
This paper presents a modified current differencing transconductance amplifier (MCDTA) and the MCDTA based KHN filter with high output impedance. Moreover, the paper gives a current-mode sixth-order elliptic band-pass filter by means of cascade method. The filter with only three MCDTAs, six grounded capacitors and four resistors is easy to be integrated. Its pole frequency can be determined electronically through adjusting bias currents of MCDTA. The results of circuit simulations are in agreement with the designed parameters.
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D. Biolek, R. Senani, V. Biolkova, Z. Kolka, Active elements for analog signal processing: classification, review, and new proposals. Radioengineering, 17(4), 15–32 (2008)
D. Biolek, V. Biolkova, Z. Kolka, Current-mode biquad employing single CDTA. Indian J. Pure Appl. Phys. 47(7), 535–537 (2009)
D. Biolek, J. Bajer, V. Biokova, Z. Kolka, M. Kubicek, Z Copy–controlled gain–current differencing buffered amplifier and its applications. Int. J. Circuit Theory Appl., 39(3), 257–274 (2011)
D. Biolek, V. Biolkova, All-pass filter employing one grounded capacitor and one active element. Electron. Lett. 45(16), 807–808 (2009)
D. Biolek, V. Biolkova, Z. Kolka, J. Bajer, Single-input multi-output resistorless current-mode biquad, in Proceedings of ECCTD ’09, European Conference on Circuit Theory and Design, Antalya, Turkey, (2009), pp. 225–228
D. Biolek, V. Biolkova, Z. Kolka, Single-CDTA (current differencing transconductance amplifier) current-mode biquad revisited. WSEAS Trans. Electron., 5(6), 250–256 (2008)
D. Biolek, V. Biolkova, Tunable ladder CDTA-based filters, in Proceedings of the 4th WSEAS International Conference on Automation & Information (ICAI 2003), Puerto De La Cruz, Tenerife, Spain (2003), pp. 1–3
D. Biolek, V. Biolkova, Universal biquads using CDTA elements for cascade filter design, in Proceeding of the 13th International Multiconference on Circuits, Systems, Communications & Computers (CSCC2003), Corfu, Greece (2003), pp. 8–12
D. Biolek, T. Gubek, V. Biolkova, Optimization of CDTA-based circuits simulating ladder structures. WSEAS Trans. Math., 3(4), 783–788 (2004)
S. Franco, Design with Operational Amplifiers and Analog Integrated Circuits, 3rd edn. (McGraw-Hill, New York, 2001)
W. Jaikla, M. Siripruchyanun, J. Bajer, D. Biolek, A simple current-mode quadrature oscillator using single CDTA. Radioengineering, 17(4), 33–40 (2008)
W. Jaikla, M. Siripruchyanun, Current controlled current differencing transconductance amplifier (CCCDTA): A new building block and its applications, in Proceedings of ECTI Conference 2006, Ubonratchathani, Thailand (2006), pp. 348–351
A.U. Keskin, D. Biolek, Current mode quadrature oscillator using current differencing transconductance amplifiers (CDTA). IEE Proc., Circuits Devices Syst., 153(3), 214–218 (2006)
A.U. Keskin, D. Biolek, E. Hancioglu, V. Biolkova, Current-mode KHN filter employing current differencing transconductance amplifier. AEÜ, Int. J. Electron. Commun., 60(6), 443–446 (2006)
A. Lahiri, Resistor-less mixed-mode quadrature sinusoidal oscillator. Int. J. Comput. Electr. Eng., 2(1), 63–66 (2010)
A. Lahiri, Novel voltage/current-mode quadrature oscillator using current differencing transconductance amplifier. Analog Integr. Circuits Signal Process., 61(2), 199–203 (2009)
Y.A. Li, Forth-order current mode band pass filter with coupled tuned by current using CCCDTAs. J. Electron. Devices 7, 210–213 (2010)
D. Prasad, D.R. Bhaskar, A.K. Singh, Realization of single-resistance-controlled sinusoidal oscillator: a new application of the CDTA. WSEAS Trans. Electron., 5(6), 257–259 (2008)
D. Prasad, D.R. Bhaskar, A.K. Singh, Universal current-mode biquad filter using dual output current differencing transconductance amplifier. AEÜ, Int. J. Electron. Commun., 63(6), 497–501 (2009)
D. Prasad, D.R. Bhaskar, A.K. Singh, Multi-function biquad using single current differencing transconductance amplifier. Analog Integr. Circuits Signal Process., 61(3), 309–313 (2009)
N.A. Shan, M. Quadri, S.Z. Iqbal, CDTA based universal transadmittance filter. Analog Integr. Circuits Signal Process. 152(8), 65–69 (2007)
A. Uygur, H. Kuntman, Seventh-order elliptic video filter with 0.1 dB pass band ripple employing CMOS CDTAs. AEÜ, Int. J. Electron. Commun., 61(5), 320–328 (2007)
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Li, Y. A Modified CDTA (MCDTA) and Its Applications: Designing Current-Mode Sixth-Order Elliptic Band-Pass Filter. Circuits Syst Signal Process 30, 1383–1390 (2011). https://doi.org/10.1007/s00034-011-9329-2
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DOI: https://doi.org/10.1007/s00034-011-9329-2