摘要:

AbstractComputer‐aided circuit analysis is a complex procedure which may be roughly divided into three steps. the first stage is device modelling, where quantitative properties of the participating electronic devices are determined. In the second step the circuit's topology in conjunction with the device equations is exploited in order to formulate a linearized nonsingular equation set. Eventually the equation set is solved iteratively in the third phase, yielding a solution vector of circuit variables.This paper deals with the second and third steps, where diverse sparse matrix methods are employed. Its aim is to provide a general mathematical form by which most matrix manipulation techniques can be described, thus enabling their classification on a theoretical level. Usually these methods are presented descriptively rather than strictly mathematically.The paper introduces a matrix reduction operator from which a general matrix operator equation is deduced. This operator equation can be used to describe entire analysis approaches. After some necessary definitions, the purpose of this paper is illustrated by studying several classical examples rather than giving many mathematical proofs. the selected examples involve some well‐known linear equation set solution methods as well as several typical equation set transformati

ISSN:0098-9886    

DOI:10.1002/cta.4490220602

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractIn this paper a new approach to the symbolic analysis of linear networks is presented. A computer programme based on this approach is briefly described. It is shown that this method in computer applications considerably reduces the number of operations needed, the number of components in the final results and thus the computer time. the method is based on the tableau description of the analysed closed network. Descriptions of elements of the network are optimally chosen successively during the operation of the algorithm. the method presented seems to be the best so far among direct methods of fully symbolic analysis and considerably enhances the possibility of such an analysis.

ISSN:0098-9886    

DOI:10.1002/cta.4490220603

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractIn this paper a new synthesis method has been proposed for the design of 2D scaled state space filters with fixed point arithmetic. It is based on constructing a non‐singular transformation matrix which minimizes the output noise power and maintains the signal‐scaling condition, besides zeroing some of the entries of the state matrices. As a result, simultaneous savings in both additions and multiplications are achieved. Numerical results are included to illustrate the performance of the proposed structures and to compare them with other structu

ISSN:0098-9886    

DOI:10.1002/cta.4490220604

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractAn adjoint method based on the asymptotic wave‐form evaluation (AWE) technique is described for the time domain sensitivity analysis of VLSI interconnect networks that contain linear lumped anddistributedelements. the network sensitivity, which is approximated by a set of poles and residues sensitivities, can be evaluated efficiently with respect to all network components and interconnect parameters. Owing to therecursiverelationship between the time moments of distributed networks, the conventional adjoint approach could not be applied directly. Instead, an alternative approach is presented which solves this problem by introducting the concept ofadjoint momentsfor networks with distributed elements. Examples and comparisons with the sensitivity determined by perturbation are presented. the proposed technique is useful for the identification of critical circuit elements and the performance optimization of high‐speed VLSI desi

ISSN:0098-9886    

DOI:10.1002/cta.4490220605

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractA circuit model for static hysteresis is presented. the circuit has a ladder structure with linear capacitors and piece wise linear resistors. the model behaviour shows all basic characteristics of static hysteresis phenomena. the model is put into relation with others proposed in the literature. an analysis of the model properties and a detailed comparison with the static Preisach model are made.

ISSN:0098-9886    

DOI:10.1002/cta.4490220606

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490220607

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490220601

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY