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Universal filter using two current-feedback amplifiers

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1 Author(s)
Liu, S.-I. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

A new universal filter using two current-feedback amplifiers is presented. This filter can realise lowpass, bandpass, highpass, notch and allpass filters from the same configuration. It has the following features: orthogonal control of the natural frequency and quality factor by grounded resistors, easy conversion into a voltage-controlled filter, minimum active components, without match components except for allpass applications, low active and passive sensitivities, and cascadability. Experimental results that confirm the theoretical analyses are obtained

Published in:

Electronics Letters  (Volume:31 ,  Issue: 8 )