On the realization of resistively matched three-ports and the ramp-waveform responses of resistive, signal-split three-port transmission-line networks

Three-port networks consisting of three transmission lines and three branching resistors at a junction are discussed, assuming TEM wave propagation and lossless lines. The matching conditions for the resistive three-port are modeled by scattering matrices. As transmission lines of unequal length are...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 41; no. 2; pp. 234 - 243
Main Authors Sakagami, I., Kajii, A.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.02.1993
Institute of Electrical and Electronics Engineers
Subjects
Applied sciences
Circuit properties
Distributed parameter circuits
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Linear matrix inequalities
Logic circuits
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Power transmission lines
Reflection
Resistors
Steady-state
Transfer functions
Transmission line matrix methods
Voltage
Logic circuit
Waveform
Lossless line
Transmission line
Diffusion matrix
Wave propagation
High speed
TEM mode
Transfer function
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Summary:Three-port networks consisting of three transmission lines and three branching resistors at a junction are discussed, assuming TEM wave propagation and lossless lines. The matching conditions for the resistive three-port are modeled by scattering matrices. As transmission lines of unequal length are used, the network transfer functions are derived for three different delay variables. These functions are obtained in a matrix form after their expansions with respect to these variables are derived, so that output waveforms can be calculated from the network transfer functions or their expansions. Three characteristics of output waveforms are discussed. Ideal networks that furnish the same output waveforms as their inputs and practical networks that have parameters as close as possible to the ideal are described. Examples of networks that keep the ringing of output waveforms within given tolerances, from the first arriving wave to the steady state, are presented. Power dissipation is discussed.< >
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9480
1557-9670
DOI:10.1109/22.216462