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Titolo: Reduction in characteristic deviations due to parasitic elements on continuoustime filters using integrators
Autore: Wada, K; Takagi, S; Fujii, N;
 Indirizzi:
 Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Phys Elect, Tokyo 1528552, Japan Tokyo Inst Technol Tokyo Japan 1528552 Phys Elect, Tokyo 1528552, Japan Tokyo Inst Technol, Fac Engn, Tokyo 1528552, Japan Tokyo Inst Technol Tokyo Japan 1528552 l, Fac Engn, Tokyo 1528552, Japan
 Titolo Testata:
 ELECTRONICS AND COMMUNICATIONS IN JAPAN PART IIIFUNDAMENTAL ELECTRONIC SCIENCE
fascicolo: 6,
volume: 83,
anno: 2000,
pagine: 50  60
 SICI:
 10420967(2000)83:6<50:RICDDT>2.0.ZU;20
 Fonte:
 ISI
 Lingua:
 ENG
 Keywords:
 continuous time system filter; integrator; highfrequency characteristics; integrated circuits;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Engineering, Computing & Technology
 discip_EC
 Citazioni:
 10
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Wada, K Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Phys Elect, Tokyo 1528552, Japan Tokyo Inst Technol Tokyo Japan 1528552 ect, Tokyo 1528552, Japan



 Citazione:
 K. Wada et al., "Reduction in characteristic deviations due to parasitic elements on continuoustime filters using integrators", ELEC C JP 3, 83(6), 2000, pp. 5060
Abstract
The integrator configuration is a filter configuration method involving realization of operational function of each edge by the functional circuits of an integrated circuit based on the signal flow graph with the desired frequency characteristics, and can realize an arbitrary linear timeinvariant continuous time system filter. In this paper, a design procedure is proposed for a filter with an integrator configuration in which the frequency deviation is small even if the frequency characteristic of the functional circuit deviates from the ideal one due to the parasitic elements in the circuit. In general, when the integration edge has a feedback edge to return its output to its own input in the signal flow graph, the integration edge and the feedback edge can be realized with ideal lossy integrators on the integrated circuit. Hence, there is a degree of freedom in realization of the integration edge with feedback to itself. In the proposed method, this degree of freedom is fully utilized to reduce the frequency deviation. The equation to evaluate the characteristic deviation by the parasitic elements is derived, and the parameter to express the degree of freedom is determined suchthat this deviation is reduced. As an application example, a thirdorder Bessel filter is designed. Its numerical simulation is used for confirming the effectiveness of the proposed method. (C) 2000 Scripta Technica.
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Documento generato il 05/04/20 alle ore 00:57:27