摘要:

AbstractThis paper distinguishes two kinds of algebra, namely switching algebra and binary signal algebra, in which switching and binary signal variables describe switching states of MOS transistors and signals in digital circuits respectively. Threshold comparison operations, transmission operation and union operation are introduced to connect these two algebras. These new operations conform to the action principle of MOS transistors. Based on the theory of transmission switches proposed in this paper, new design procedures for both constant and variable transmission sources are presented. the logic design of CMOS circuits at switch level is realized and CMOS circuits with simpler construction may be obtained by using variable transmission sources.

ISSN:0098-9886    

DOI:10.1002/cta.4490200402

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

年代:1992

数据来源: WILEY

摘要:

AbstractThis paper presents a new method to determine the symbolic gain of a linear system via Mason's formula. A combined searching algorithm based on the breadth‐first and depth‐first searching algorithms in a directed graph is devised to find the forward paths and loops in the linear system. Mason's formula is then determined via touching‐non‐touching matches of forward paths and loops in the system. A SPICE‐like system Description language (SDL) is also proposed to describe the linear system so that this new algorithm can be put into execution in a computer language. In comparison with other approaches, this method is more straightforward and needs no complicated matrix operations. the completeness of this new method had already been guaranteed by Mason's original formula. It is also believed that Mason's formula has a new interpretation through this new

ISSN:0098-9886    

DOI:10.1002/cta.4490200403

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

年代:1992

数据来源: WILEY

摘要:

AbstractA simulation technique for transients in transmission lines is presented in which mathematical models of the line and load in the form of integral Volterra equations of the second kind are used. A procedure of numerical analytical solution of these equations is developed on the basis of differential Taylor transforms. A calculation example for the transients in an inductance‐loaded line is presente

ISSN:0098-9886    

DOI:10.1002/cta.4490200404

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

年代:1992

数据来源: WILEY

摘要:

AbstractHigh‐frequencyRC‐active sinusoidal oscillators using two op amps are surveyed from a unified viewpoint. Information about their performance is obtained using linear and non‐linear approaches. As a consequence of this analysis, two main criteria are proposed to optimize these systems and to select the best configuration for a given application. the first criterion is related to the feasibility of obtaining an oscillation frequency independent of the op amps used in the design. the second criterion is connected with the level of harmonic distortion present in the signal. Experimental measurements obtained agree closely with the theoretical analysis carrie

ISSN:0098-9886    

DOI:10.1002/cta.4490200405

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

年代:1992

数据来源: WILEY

摘要:

AbstractThis paper presents a contribution to the symbolic analysis of fractal patterns exhibited by a second‐order digital filter with modular adder overflow characteristic. We use symbolic dynamics for the analysis of phenomena encountered in the system. We present several new results concerning the existence of admissible sequences for periodic orbits in the filter. an efficient computational algorithm based on rigorous mathematical results presented in the paper enabled us to calculate sequences with long periods, thus allowing deeper understanding of the underlying mechanisms of complex behaviour encountered in the filte

ISSN:0098-9886    

DOI:10.1002/cta.4490200406

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

年代:1992

数据来源: WILEY

摘要:

AbstractSome algorithms in an experimental design methodology for circuits with combinatorial logic blocks are described in which the circuit schematics and the layout of the blocks are designed in parallel. A combinational circuit is represented by three parallel descriptions, namely the functional (truth table), the incidence (connections) and the one‐dimensional layout. to support this design method, new types of algorithms have been developed for the component extraction and interconnection phases, enabling the interactive design activity of ‘twin’ designers. the two‐dimensional layout—which is a fourth representation—of the whole circuit is generated using the one‐dimensional

ISSN:0098-9886    

DOI:10.1002/cta.4490200407

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

年代:1992

数据来源: WILEY

摘要:

AbstractThe method of averaging has been extensively used to detect invariant manifolds for non‐linear dynamical systems. In this paper we combine the averaging analysis with some functional analytical methods to prove the existence and stability of periodic solutions for a class of weakly non‐linear electrical circuits. We also prove a specific averaging theorem for these circuits using Gronwall estimates and the Sanchez‐Palencia summation trick. These results are applied to the model equations of a system of coupled Van der Pol oscillators to obtain the existence of orbitally asymptotically stable periodic solutions. Finally we construct asymptotic approximations of these solutions and perform a numerical simulation of the

ISSN:0098-9886    

DOI:10.1002/cta.4490200408

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

年代:1992

数据来源: WILEY

ISSN:0098-9886    

DOI:10.1002/cta.4490200401

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

年代:1992

数据来源: WILEY