Enhanced dynamic range analog filter topologies with a notch/all-pass circuit example



The signal handling capability of the filters is called dynamic range. In this paper, a topological form for the synthesis of filters with high dynamic range is proposed. A biquad notch/all-pass filter is shown in conformity with the given topological form. It is shown that there is a trade-off between dynamic range and high input impedance property. The presented circuit is compared with other notch filters in the literature. It has less number of components, better high-frequency response and dynamic range compared to others. Since the circuit includes a minimum number of resistors, it can easily provide electronically tunable circuits through resistor/controlled current conveyor replacement. Simulations are performed to verify the theoretical results. Routh-Hurwitz stability analyses are also given.


Current conveyors All-pass filter Notch filter Dynamic range First generation current conveyor 



This work is/was supported by Bogazici University Research Fund, with the project code 05A201D.


  1. 1.
    Pal, K., & Singh, R. (1982). Inductorless current conveyor all-pass filter using grounded capacitors. Electronics Letters, 18(1), 47.CrossRefMathSciNetGoogle Scholar
  2. 2.
    Higashimura, M., & Fukui, Y. (1988). Realization of all-pass and notch filters using a single current conveyor. International Journal of Electronics, 65(4), 823–828.CrossRefGoogle Scholar
  3. 3.
    Soliman, A. M. (1999). New all-pass and notch filters using current conveyors. Frequenz, 53(3–4), 84–86.Google Scholar
  4. 4.
    Cakir, C., Cam, U., & Cicekoglu, O. (2005). Novel all-pass filter configuration employing single OTRA. IEEE Transactions on Circuits and Systems II, 52(3), 122–125.CrossRefGoogle Scholar
  5. 5.
    Smith, K. C., & Sedra, A. S. (1968). The Current Conveyor: A New Circuit Building Block. Proceedings of the IEEE, 56, 1368–1369.CrossRefGoogle Scholar
  6. 6.
    Aronhime, P., Nelson, D., & Adams, C. (1990). Applications of a first generation current conveyor in current mode circuits. Electronics Letters, 26(18), 1456–1457.CrossRefGoogle Scholar
  7. 7.
    Fabre, A., Saaid, O., Wiest, F., & Boucheron, C. (1996). High frequency applications based on a new current controlled conveyor. IEEE Transactions on Circuits and Systems I, 43(2), 82–91.CrossRefGoogle Scholar
  8. 8.
    Frey, D. R. (1993). Log-domain filtering: an approach to current-mode filtering. IEE Proceedings, Part G: Circuits, Devices and Systems, 140(6), 406–416.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Bilgin Metin
    • 1
  • Shahram Minaei
    • 2
  • Oguzhan Cicekoglu
    • 1
  1. 1.Electrical and Electronic Engineering DepartmentBogazici UniversityIstanbulTurkey
  2. 2.Department of Electronics and Communication EngineeringDogus UniversityIstanbulTurkey

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