Multiple-input single-output universal biquad filter using single output operational transconductance amplifiers |
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| Affiliation: | 1. Department of Physics, Electronics Laboratory, University of Patras, Patras, GR 26504, Greece;2. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;3. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic;1. Electronics Laboratory, Physics Department, University of Patras, Rio Patras GR 26504, Greece;2. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;3. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic;4. Department of Telecommunications, Brno University of Technology, Technická 12, Brno, Czech Republic;5. Department of Electronics and Instrumentation Technology, University of Kashmir, 190 006 Srinagar, India;1. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;2. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic;3. Department of Telecommunications, Brno University of Technology, Technická 12, Brno, Czech Republic;4. University of Patras, Physics Department, Electronics Laboratory, Rio, GR-26504 Patras, Greece;1. Pamukkale University, Department of Electrical and Electronics Engineering, 20160 Kinikli-Denizli, Turkey;2. Dogus University, Department of Electrical and Electronics Engineering, 34775 Umraniye, Istanbul, Turkey |
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| Abstract: | A novel universal biquad filter topology, realized using Operational Transconductance Amplifiers as active elements, is presented in this paper. It offers the benefits of orthogonal adjustment of the resonance frequency and the quality factor of the filter and, also, resistorless realization with grounded capacitors. The attractive characteristic is the requirement of single output Operational Transconductance Amplifies because in this way the implementation of the filter using commercially available discrete component ICs as OTAs is quite facilitated. Comparison with the literature shows that the proposed solution is the most beneficial from the active component count point of view. The behavior of the proposed topology is evaluated trough simulation results, using the OrCAD PSpice simulator, as well as through experimental results using the LM 13700 discrete component IC as Operational Transconductance Amplifier. |
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| Keywords: | Analog filters Universal biquad filters Operational Transconductance Amplifiers Circuit theory |
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