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Multifunction active R filter with two operational amplifiers

Multifunction active R filter with two operational amplifiers

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A multifunction active R filter with two operational amplifiers, attractive for monolithic i.c. fabrication, is presented. It realises b.p., b.e. and l.p. transfer characteristics at three different output terminals. The resonant frequency of the b.p. characteristic can be controlled over a wide range with constant bandwidth and resonant gain.

References

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      • A. Budak , D.M. Petrela . Frequency limitations of active filters using operational amplifiers. IEEE Trans. , 322 - 328
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      • K. Radhakrishna Rao , S. Srinivasan . A high Q temperature insensitive bandpass filter using the operational amplifier pole. Proc. IEEE , 1713 - 1714
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      • S. Srinivasan . Synthesis of transfer function using operational amplifier pole. Int. J. Electron. , 5 - 13
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      • M.A. Soderstrand . Design of active R filters using only resistors and operational amplifiers. Int. J. Electron. , 417 - 432
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      • A.M. Soliman , M. Fawzy . A universal active R filter. Electron. Eng. , 49 - 50
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      • M.K. Li , C.W. Li . Active R filter using operational amplifier pole. Electron. Eng.
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