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Optimum-sensitivity active RC bandpass filter

Optimum-sensitivity active RC bandpass filter

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A realisation is given for a 2-pole bandpass filter that requires only resistors and capacitors as passive elements and a negative-immittance convertor as an active element. The realisation uses fewer components than other realisations, is optimally insensitive to variations in the gain of the negative-immittance convertor and provides for independent adjustment of both the resonant frequency and the Qfactor of the circuit.

References

    1. 1)
      • D.P. Franklin . Direct-coupled negative-impedance convertor. Electronics Letters
    2. 2)
      • S.S. Hakim . Some new negative-impedance convertors. Electronics Letters
    3. 3)
      • B.R. Myers . New subclass of negative-impedance convertors with improved gain-product sensitivities. Electronics Letters
    4. 4)
      • L.P. Huelsman . Fundamental classification of negative-immittance convertors. IEEE Internat. Convention Record
    5. 5)
      • I.M. Horowitz . Optimization of negative impedance conversion methods of active RC synthesis. IRE Trans.
    6. 6)
      • T. Yanagisawa . RC active networks using current inversion type negative impedance convertors. IRE Trans.
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