Abstract
The real integrator multiple-feedback (RIMF) section is proposed in order to realize low-cost high- <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">RC</tex> active second-order filters. It has been designed after taking into account the fact that a low-cost OA is in practice a real integrator, that is an ideal integrator with finite dc gain, input resistance, and output conductance; therefore the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">RC</tex> feedback network has been modified by adding a resistor. Hence, enhancement of the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> -factor, lower sensitivity of the resonant frequency with respect to the OA unity-gain bandwidth, and an easier tuning of the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Q</tex> -factor are obtained in comparison with the classical multiple-feedback section. Furthermore, thermal drifts are minimized, by optimizing three free parameters. Results of exhaustive experiments confirm the theoretical developments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
