Abstract
An optimization-based methodology for designing robust high frequency Gm-C filters is presented. In the first step of the design, the topology for high-frequency Gm-C filter is obtained directly from an active RC prototype, using the a transformation method proposed in [1]. where a transformation method for designing Gm-C filters from known RC filters while grounding floating capacitors is proposed. In the above mentioned paper the filter elements values are obtained by a user-defined methodology which can produce high sensitivity to component variations. In the work developed, the analytical characterization of a 2nd order Gm-C Sallen-Key LP filter is considered as well as the corresponding symbolic expressions for their sensitivity to component value variations. By using the minimization of the sensitivity as a goal function in the optimization process, parasitic capacitances are canceled and robust designs are obtained. Optimization and simulations results that validate the theoretical results are presented.
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Ahmed, R.F., Awad, I.A., Soliman, A.M.: New opamp-RC to Gm-C transformation method. Analog Integrated Circuits and Signal Processing 49, 79–86 (2006)
Lo, T.Y., Hung, C.C.: 1V CMOS Gm-C Filters: Design and Applications, Analog Circuits and Signal Processing. Springer Science Business Media B.V (2009)
Ananda Mohan, P.V.: Generation of OTA-C filter structures from active RC filter structures. IEEE Trans. Circuits Syst. 37, 656–660 (1990)
Nauta, B.: Analog Cmos Filters for Very High Frequencies. Springer, Heidelberg (1992)
Sun, Y., Fidler, J.K.: Structure Generation and Design of Multiple Loop Feedback OTA-Grounded Capacitor Filters. IEEE Transactions on Circuits and Systems—I: Fundamental Theory and Applications 44(1) (1997)
Garcia-Ortega, J.M., Tlelo-Cuautle, E., Sanchez-Lopez, C.: Design of Current-Mode Gm-C Filters from the Transformation of Opamp-RC Filters. Journal of Applied Sciences 7, 1321–1326 (2007)
Lauwers, E., Gielen, G.: Systematic design of high-frequency Gm-C filters. Analog Circuit Design, 21–45 (2002)
Sedra, A.S., Smith, K.C.: Microelectronic Circuits, 6th edn. (2009)
Maxim: Minimizing Component-Variation Sensitivity in Single Op-Amp Filters. Application Note 738 (2001)
Stehr, U., Henkel, F., Dalluge, L., Waldow, P.: A fully differential CMOS integrated 4th order Reconfigurable GM-C lowpass filter for mobile communication. In: IEEE ICECs (2003)
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Leitão, P.M.V., Fino, H. (2012). Robust Optimization-Based High Frequency Gm-C Filter Design. In: Camarinha-Matos, L.M., Shahamatnia, E., Nunes, G. (eds) Technological Innovation for Value Creation. DoCEIS 2012. IFIP Advances in Information and Communication Technology, vol 372. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28255-3_51
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DOI: https://doi.org/10.1007/978-3-642-28255-3_51
Publisher Name: Springer, Berlin, Heidelberg
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