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Titolo:
Reduction in characteristic deviations due to parasitic elements on continuous-time 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 III-FUNDAMENTAL ELECTRONIC SCIENCE
fascicolo: 6, volume: 83, anno: 2000,
pagine: 50 - 60
SICI:
1042-0967(2000)83:6<50:RICDDT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Keywords:
continuous time system filter; integrator; high-frequency 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 continuous-time filters using integrators", ELEC C JP 3, 83(6), 2000, pp. 50-60

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 time-invariant 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 third-order 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