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IEEE JOURNAL OF SOLID-STATE circuits 1972年第1期SC 7卷 50-&页

作者： MERKELO, J HALL, RD Hewlett Packard Company Santa Clara CA USA Hall Associates Los Altos CA USA

Previous developments in high frequency signal sampling have been extended by applying thin-film and solid state techniques to the sampler design. The basic elements of a sampler are a signal-carrying transmission line, a sampling gate, a drive line for the gate pulse, and a video output. In the design reported here, a thin quartz substrate supports the circuits. To reduce signal-line reflections the gate is made the center element of a low-pass signal-line filter. The gate pulse is developed across a length of slot transmission line in the signal ground plane parallel to and beneath the signal transmission line. A beam-lead Schottky diode pair is mounted across the slot with its center node connected to the signal transmission line through the substrate.

关键词： Transistors distributed parameter circuits Substrates Frequency Signal sampling Thin film circuits Solid state circuits Signal design Sampling methods Optical reflection

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PACIFIC INTERTIE TESTS

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IEEE TRANSACTIONS ON COMMUNICATIONS 1972年第2期CO20卷 202-&页

作者： CALLAHAN, DP General Telephone Company of California Santa Monica CA USA

The Pacific Intertie has the world's longest highvoltage direct current (HVDC) transmission line. Its presence in proximity to communications circuits poses a potential interference problem with respect to electrostatic and electromagnetic induction and a possible electrolysis problem with respect to underground metallic structures located near the line's earth electrodes. This paper traces the history of testing endeavors by representatives of interested and concerned agencies, companies, and utilities in an attempt to define the magnitude of the problem in order that mitigative measures could be planned.

关键词： Circuit testing HVDC transmission distributed parameter circuits Electromagnetic interference Electrostatic interference Electromagnetic induction Electrochemical processes Earth Electrodes History

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On the Passivity of the Two-Conductor Transmission Line

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IEEE Transactions on Circuit Theory 1972年第5期19卷 505-506页

作者： Nedunuri, Ramamurty Lancashire 6 Dunkirk Rise Rochdale United Kingdom

关键词： Transmission lines Transmission line theory distributed parameter circuits Transfer functions Cyclic redundancy check Voltage Impedance Circuit theory Propagation losses Passive networks

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Transient stability problem solution using the hamming predictor-corrector method

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IEEE Transactions on Power Apparatus and Systems 1972年第4期PAS-91卷 1371-1378页

作者： Freddy, Plitman Z. Mauricio, Iza L. C. A. La Electricidad de Caracas Caracas Venezuela

A predictor-corrector algorithm is developed for the solution of the differential equations of transient stability studies. The algorithm uses the Hamming predictor-corrector method with some alterations, introduced to make it more suitable for the power system transient stability equations. An elementary power system, consisting of one synchronous machine, represented by 9 differential equations, connected to an infinite bus-bar by a double circuit transmission line, is used to test the proposed algorithm. The results of this sample problem indicate that the proposed approach for the solution of the differential equations minimizes the main sources of error in the integration process and reduces the computation time compared with present methods. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Power system transients Power system stability Differential equations Circuit stability Circuit testing Prediction algorithms Synchronous machines Power transmission lines distributed parameter circuits System testing

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An Analysis of Gap in Microstrip Transmission Lines

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IEEE Transactions on Microwave Theory and Techniques 1972年第6期20卷 390-396页

作者： Maeda, Minoru Central Research Laboratory Hitachi Ltd. Kokubunji Tokyo Japan

Although microstrip transmission lines have been widely used in microwave integrated circuits, the discontinuity structures in the microstrip transmission lines such as a gap, an abruptly ended strip conductor, and so on, have hardly been analyzed. An analytical method and numerical results for a gap capacitance in the microstrip transmission line are described. The equivalent circuit parameters are formulated with three-dimensional Green's functions, based on a variational principle. The numerical results are in good agreement with the published experimental data. The fringing effect of an abruptly ended strip conductor is also investigated. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Microstrip Transmission lines distributed parameter circuits Strips Conductors Microwave integrated circuits Transmission line discontinuities Capacitance Equivalent circuits Green's function methods

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A Simple Circuit for Fsk Modulation of Gunn Oscillators

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Proceedings of the IEEE 1972年第2期60卷 235-236页

作者： Patel, B.C. Hobsons, G.S. Univ. Sheffield Sheffield

A simple transmission cavity placed in the output transmission line of a CW Gunn oscillator can be adiusted to allow simple and cheap digital frequency modulation by bias modulation. Transition rates down to 10 ns have been demonstrated. A threshold switching volte age is required so that the circuit has noise immunity. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Frequency shift keying Gunn devices Oscillators Voltage Fasteners Probes Frequency modulation Digital modulation distributed parameter circuits Tuning

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A theoretical analysis of telephone dial pulse signaling

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IEEE Transactions on Communications 1972年第6期20卷 1073-1079页

作者： Michalak, Stefan Older, william j. Muehle, godfrey w. Bell-Northern research Bramalea Ont. Canada

This paper presents a theoretical analysis of the distortion of the dial pulse waveform and its effects on the response characteristics of the pulse-receiving circuit in the telephone office. To derive expressions for the waveform for dial speeds of 10 and 20 pulses per second (pps) Laplace transformation and matrix algebra are applied to the system, represented by two complementary linear lumped-constant time-invariant networks responsible for the generation of the leading and trailing edges of a dial pulse. Based on the known waveform and the operational requirements of the pulse-receiving circuit, a function is derived showing the percent break value of a pulse train as it arrives at the central office, and the dependence of the percent break on the number of extension (branch) telephones connected and the subscribers’ loop parameters. Its inverse, shown in graphical form, presents the upper limits for the number of extensions to be associated with a transmission line of given electrical parameters. The conditions under which abrupt changes of the percent break value and quasi-pulses occur are analyzed. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Signal analysis Telephony Pulse circuits Transmission line theory Relays distributed parameter circuits Equivalent circuits Power system transients Pulse generation Central office

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Electrostatic effects of overhead transmission lines: Part II — Methods of calculation

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IEEE Transactions on Power Apparatus and Systems 1972年第2期PAS-91卷 426-444页

作者： Barthold, L.O. Lambert, E.G. Finney, W.G. Lemire, W.A.R. Scholmann, R.H. Zaffanella, L.E. Power Technologies Inc. United States Pacific Gas and Electric Co. United States Richard J. Donovan Inc. United States Ontario Hydro Canada American Electric Power Service Co. United States General Electric Co. United States

This paper interprets electrostatically coupled objects in circuit form, reduces the problem to Thevenin equivalents, and develops practical methods for computing such equivalents. Means for representing irregularly shaped objects, both by analytical and analog methods are discussed. A companion paper describes the effects of induced currents on humans and animals, and cites examples of hazards sometimes encountered in operation of high voltage lines. Copyright © 1972 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Power transmission lines Voltage Vehicles Equations Conductors distributed parameter circuits Coupling circuits Hazards Electrostatic measurements Power engineering computing

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A transmission-line model for transient CACD programs

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IEEE Journal of Solid-State circuits 1972年第3期7卷 270-273页

作者： E.F. Bernard Development Division Xerox Data Systems El Segundo CA USA

A transmission-line model is developed for computer-aided circuit design (CACD). The model is easily implemented using voltage- resistance sources in transient CACD programs. Analyses of a transmission line with and without a clamp-diode termination are presented. The model provides a straightforward means of including an accurate transmission-line model in any linear or nonlinear transient analysis routine.

关键词： Transmission lines Voltage Transfer functions Equations Transmission line matrix methods Poles and zeros Impedance distributed parameter circuits Frequency Power system transients

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"Microguide" A New Microwave Integrated Circuit Transmission Line

"Microguide" A New Microwave Integrated Circuit Transmission...

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Microwave, MTT-S International Symposium

作者： E.G. Cristal A.F. Podell D. Parker Stanford Research Institute Menlo Park CA USA

A new transmission line for microwave integrated circuit applications at frequencies above X band is described. Although physically similar to microstrip, its principal mode of propagation is a quasi-TE 10 waveguide ... 详细信息

关键词： Microwave integrated circuits distributed parameter circuits Frequency Power transmission lines Strips Dielectric measurements Solid state circuits Planar transmission lines Microstrip components Dielectric loss measurement

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