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Multi-function biquad using single current differencing transconductance amplifier

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Abstract

An universal multi input single output type multifunction biquad is proposed. The proposed configuration employs only one current differencing transconductance amplifier as the active element, two capacitors and three resistors. The circuit realizes all five filter functions (i.e. Low Pass, High Pass, Band Pass, Notch and All Pass) without changing the circuit topology. The natural frequency ω0 is independently and electronically tunable. The workability of the proposed multifunction biquad has been verified using SPICE simulation.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, F/O Engineering and Technology, Jamia Millia Islamia, Jamia Nagar, New Delhi, 110025, India

    Dinesh Prasad & D. R. Bhaskar

  2. Department of Electronics and Communication Engineering, Inderprastha Engineering College, Shahibabad, Ghaziabad, UP, India

    A. K. Singh

Authors
  1. Dinesh Prasad
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  2. D. R. Bhaskar
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  3. A. K. Singh
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Correspondence to D. R. Bhaskar.

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Prasad, D., Bhaskar, D.R. & Singh, A.K. Multi-function biquad using single current differencing transconductance amplifier. Analog Integr Circ Sig Process 61, 309–313 (2009). https://doi.org/10.1007/s10470-009-9310-1

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  • DOI: https://doi.org/10.1007/s10470-009-9310-1

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