摘要:

AbstractAlthough paramountcy1is a necessary and sufficient condition for the realizability of a 3 by 3 matrix as either an open‐circuit impedance matrix or a short‐circuit admittance matrix of a resistive 3‐port,2Weinberg's 4 by 4 example3,5shows that paramountcy, although necessary for open‐circuit impedance realization, is not sufficient. Here we exhibit a class of 4 by 4 completely irreducible paramount matrices, including Weinberg's example, no member of which is realizable as an open‐circuit impedance matrix. This is accomplished by examining those topological constraints inherited by a realizing network when algebraic conditions are imposed on the paramount matrix which the network realizes. Our development deals with ann‐port network, for arbitraryn, and also provides new criteria guaranteeing nonrealizability of an irreducible1param

ISSN:0098-9886    

DOI:10.1002/cta.4490070102

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

年代:1979

数据来源: WILEY

摘要:

AbstractThis paper discusses realizations of second‐order open‐circuit voltage transfer functions by single‐amplifier active RC networks. These realizations are based on the polynomial decompositions having the property that the sensitivity of ω0with respect to the amplifier gain is zero. In addition, the gain‐sensitivity product ofQis minimized and the element spread is contained to be within acceptable limits. The realizations are suitable for hybrid IC te

ISSN:0098-9886    

DOI:10.1002/cta.4490070103

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

年代:1979

数据来源: WILEY

摘要:

AbstractA simplified method—based on Thiele's continued fraction—is proposed for the derivation of transfer functions whose phase responses interpolate a desired phase characteristics at a set of prescribed frequencies, the maximally flat delay aproximation being recovered as a degenerate one. Illustrative examples showing the application of this procedure in the design of linear delay networks are also gi

ISSN:0098-9886    

DOI:10.1002/cta.4490070104

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

年代:1979

数据来源: WILEY

摘要:

AbstractEssentially combinatorial necessary and sufficient conditions are given for the unique solvability of linear networks containing memorylessn‐ports, and for the existence of a hybrid immittance description of the interconnection of suchn‐ports. Formulae for the maximum number of independent state variables and order of complexity are also presented.The essential tool for obtaining the results is the theory of matroids. The conditions can be effectively checked by matroid partition or intersection algorithms.Throughout, the ‘general’ approach is considered, i.e., no cancellation among the nonzero terms is allowed. The results are illustrated by several e

ISSN:0098-9886    

DOI:10.1002/cta.4490070105

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

年代:1979

数据来源: WILEY

摘要:

AbstractA method is explained for the decomposition of an even polynomial into the product of a Hurwitz polynomial and an Anti‐Hurwitz polynomial. This problem arises, for instance, in network synthesis. A computer program is presented and its application is explained. Several examples show the properties of the proposed metho

ISSN:0098-9886    

DOI:10.1002/cta.4490070106

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

年代:1979

数据来源: WILEY

摘要:

AbstractA new data structure, called the Edge‐Oriented Adjacency List (EOAL), for representing undirected graphs is presented. It provides more information on the edges and requires less storage space than the conventional adjacency list. Furthermore, it is superior to the conventional adjacency list in both insertion and deletion operation

ISSN:0098-9886    

DOI:10.1002/cta.4490070107

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

年代:1979

数据来源: WILEY

摘要:

AbstractIt is shown that hybrid matrices exist for certain types of activen‐ports constructed using resistors and controlled sources. Furthermore, it is shown that the existence of these hybrid matrices implies that a certain well‐known set of necessary and sufficient conditions, which guarantees the uniqueness of solutions to the nonlinear DC equations of transistor networks, can be simplified. Additional results are presented which show how the amount of computation required to verify these conditions can be redu

ISSN:0098-9886    

DOI:10.1002/cta.4490070108

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

年代:1979

数据来源: WILEY

摘要:

AbstractA general RC active network synthesis procedure for the realization of the multiport is proposed in this paper. The method is developed and based on using matrix‐continuants and simple matrix manipulations. A numerical example of the realization is also give

ISSN:0098-9886    

DOI:10.1002/cta.4490070109

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

年代:1979

数据来源: WILEY

摘要:

AbstractA microwave filter with nonuniform‐coupled transmission lines is suggested. In contrast to known transmission‐line microwave filters the transmission characteristic does not change periodically with frequency. The synthesis procedure shown reduces the design problem to the known synthesis of directional couplers with nonuniform coupling factor. A table of calculated coupling factor values of the microwave filter with an equi‐ripple passband of 0.05 dB up to 1 dB and an equi‐ripple stopband of 60 dB is given. A practical design example shows good agreement with theoretical

ISSN:0098-9886    

DOI:10.1002/cta.4490070110

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

年代:1979

数据来源: WILEY

摘要:

AbstractA method of eliminating zero‐input granularity limit cycles in digital filters using the state transition matrix is presented. Further, for a particular class of digital filters, it is shown that bounding the transition matrix is sufficient to eliminate limit cycles of lengthn>

ISSN:0098-9886    

DOI:10.1002/cta.4490070111

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

年代:1979

数据来源: WILEY