Journal
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
Volume 19, Issue 3, Pages 363-372Publisher
Tubitak Scientific & Technological Research Council Turkey
DOI: 10.3906/elk-1002-416
Keywords
Analog signal processing; operational transresistance amplifier; MOS-C realization
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Universal biquadratic filters employing operational transresistance amplifiers are presented. All 5 different second-order filtering functions, namely low-pass, high-pass, band-pass, notch, and all-pass, can be realized. The quality factor of the filters can be adjusted electronically without affecting resonant frequency. The configuration can be made fully integrated based on MOS-C realization, by making use of the current differencing and internally grounded inputs of OTRA. PSpice simulation results are given to verify the theoretical analysis.
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