Systematic design of high-frequency gm-C filters

Lauwers, E.; Gielen, Georges

doi:10.1007/0-306-47951-6_2

Cited by 1 publication

(1 citation statement)

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“…For these applications, Gm-C has proved to be the best candidate [2]. Over the last decade several methodologies have been proposed for generating Gm-C filters topologies [3][4][5][6][7]. However, the necessity for designing high frequency filters poses several topological constraints, namely on what concerns the reduction of the parasitic capacitances and thus guaranteeing the non-existence of floating capacitors.…”

Section: Introductionmentioning

confidence: 99%

Robust Optimization-Based High Frequency Gm-C Filter Design

Leitão

Fino

2012

Technological Innovation for Value Creation

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Part 16: Optimization in ElectronicsInternational audienceAn 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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Section: Introductionmentioning

confidence: 99%