By Topic

Circuit Theory, IRE Transactions on

Issue 3 • Date September 1956

Filter Results

Displaying Results 1 - 13 of 13
  • Abstracts of Foreign Language Articles on Circuit Theory

    Publication Year: 1956 , Page(s): 199 - 200
    Save to Project icon | Request Permissions | PDF file iconPDF (278 KB)  
    Freely Available from IEEE
  • RLC Transfer Function Synthesis

    Publication Year: 1956 , Page(s): 188 - 190
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (344 KB)  

    This paper considers an RLC transfer-function synthesis based on an extension of a real part decomposition technique as applied to the synthesis of a class of driving-point immitances. The basic concept is due to a valuable relationship between the short-circuit parameters existing in the network (connected as a two-terminal-pair network) realized for a driving-point admittance function by the real part decomposition technique using its simplest decomposition form. The synthesis procedure involves defining a suitable half-admittance matrix from the prescribed transfer function, such that a network can be realized by the real part decomposition technique alone. While the procedure represents merely a further exploitation of the real part decomposition technique, it is, however, extremely simple to apply, and can be considered an alternative to the already existing RLC transfer-function synthesis procedures. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On Electrical Circuits and Switching Circuits

    Publication Year: 1956 , Page(s): 172 - 178
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (808 KB)  

    From an abstract point of view, both electric circuits and switching circuits may be considered as weighted nonoriented graphs. There are two main differences between electric and switching circuits from this point of view. The first of these is the algebra to which the weights belong. In electrical network theory the weights belong to the complex number field or to the field of rational functions of a complex variable since they are impedances or admittances. In switching theory they are Boolean functions. The second difference is that one is interested, in electrical network theory, in the circuits or the "loops" in the system, whereas in switching theory one is interested in the paths. This paper seeks to relate the two theories by means of topological considerations. Formulas are derived relating the switching function and the driving point admittance function of a two-terminal network. Certain relations between dual networks are also established. The paper concludes with a synthesis procedure for a type of switching circuit of academic interest, the single contact switching circuit, and statements of some important unsolved problems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On Networks without Ideal Transformers

    Publication Year: 1956 , Page(s): 179 - 182
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (488 KB)  

    In the above paper necessary conditions for a matrix to be an impedance or admittance matrix of pure resistance n ports are given. The results are then applied to RLC networks for real positive values of the complex frequency, and to the most general linear reciprocal networks without ideal transformers at zero frequency. Some properties of the matrices fulfilling the above conditions are given in the last section of the paper. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Linear Pulse-Forming Circuits

    Publication Year: 1956 , Page(s): 182 - 188
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (680 KB)  

    The purpose of this paper is to present a generalized method for the design of linear pulse-forming circuits, i.e., circuits which have pulse-type responses to a step-function input, which would be applicable for a variety of pulse shapes. Although the problem has been treated previously by solving for the circuit impedance necessary to produce a specified pulse shape, practical difficulties are usually encountered when one tries to construct the required impedance from available components. These difficulties are avoided by a different method of setting up the circuit problem. This method, in essence, consists of regarding the circuit as composed of two parts, a pulse-forming network and a load or termination; and the desired pulse shape as the sum of two identically shaped waveforms displaced in time. As a result of this approach, a solution of the problem of determining the load or termination is obtained in terms of the impedance of the pulse-forming network which is easily recognizable. Design equations are given and experimental results are shown for the new method. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Theorem Concerning Noise Figures

    Publication Year: 1956 , Page(s): 190 - 196
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (688 KB)  

    A theorem is formulated and proved which determines the greatest lower bound of the single-frequency noise figure of a general system consisting of n amplifying devices and passive coupling elements. According to the theorem, this lower bound is equal to the noise figure of an optimum system using a selected one of these amplifying devices. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Time Characteristics of Pulsed Signals Which Have Passed through a Linear System

    Publication Year: 1956 , Page(s): 198 - 199
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Procedures To Reduce Noise and To Increase Channel Capacity with Pulse Code Modulation

    Publication Year: 1956 , Page(s): 197 - 198
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Phase Function

    Publication Year: 1956 , Page(s): 200 - 201
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (296 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Design of Active Filters with Butterworth Characteristics

    Publication Year: 1956 , Page(s): 202
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (120 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Response of Linear Systems to Signals Modulated in Amplitude and Frequency

    Publication Year: 1956 , Page(s): 202
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (120 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Approximation of a Two-Pole Function, Whose Components are Prescribed Within a Limited Frequency-Band

    Publication Year: 1956 , Page(s): 197
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (136 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Synthesis of Tchebycheff Impedance-Matching Networks, Filters, and Interstages

    Publication Year: 1956 , Page(s): 163 - 172
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1072 KB)  

    Work of R. M. Fano on the theoretical limitations of broad-band impedance-matching is utilized to give a straightforward procedure for synthesis of optimum, lossless, Tchebycheff, wide-band impedance-matching networks for various classes of loads. The loads which are treated consist of an inductance, capacitance, and a resistance (all of arbitrary size) connected in series, parallel, or any of a variety of series-parallel combinations. Procedures are described and examples are presented for low-pass, high-pass, and band-pass matching network design for use with specified loads so as to meet prescribed bandwidth and reflection coefficient magnitude specifications (i.e., any specifications that are physically realizable). The design procedure is simplified by the use of tabulated reflection coefficient polynomials, each of which is a function of frequency p and a design parameter. The application of this procedure to Tchebycheff filter and vacuum-tube amplifier, interstage design, is also discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.