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Table-based linear transformation filters using OTA-C techniques

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4 Author(s)
Y. -S. Hwang ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ; S. -I. Liu ; D. S. Wu ; Y. -P. Wu

Linear transformation (LT) active filters using operational transconductance amplifiers (OTAs) and capacitors are presented. Based on the LT, two simple and systematic design tables are given to realise OTA-C filters efficiently. Using the proposed design tables, the synthesised all-pole and elliptic filters employ minimum numbers of OTAs and only grounded capacitors. As an example, a new third-order elliptic lowpass filter is realised. Experimental results are obtained to verify the theoretical analysis

Published in:

Electronics Letters  (Volume:30 ,  Issue: 24 )