distributed circuit parameters parameterize the transmission and reflection off a given transmission line in terms of a distributed resistance, inductance, capacitance, and conductance, which are per-unit-length, freq...
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ISBN:
(纸本)9781538643563
distributed circuit parameters parameterize the transmission and reflection off a given transmission line in terms of a distributed resistance, inductance, capacitance, and conductance, which are per-unit-length, frequency-dependent quantities. While there are analytical models for extracting the distributed circuit parameters, these models are discontinuous as a function of frequency when the argument approaches a branch cut. Here, we develop a nonlinear least-square regression algorithm that accurately extracts the distributed circuit parameters. Compared to existing approaches and finite element models, our algorithm successfully extracts the distributed circuit parameters as a function of frequency, all while being less sensitive to these phase conditions. Such an algorithm is useful for understanding how to deembed transmission lines, and how to extract electrical properties of the materials used in a circuit.
The distributed circuit parameters of three kinds of chamfered bent microstrip lines are extracted and analyzed. In the implementation, the distributed voltage and current on the transmission lines are calculated firs...
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The distributed circuit parameters of three kinds of chamfered bent microstrip lines are extracted and analyzed. In the implementation, the distributed voltage and current on the transmission lines are calculated first by the conformal finite differential time domain method (CFDTD). Then, the distributed circuit parameters are obtained by substituting the distributed voltage and current into the generalized transmission line equation (GTLE). The distributedparameters of the chamfered bent microstrip lines are compared with those from the right angle bent microstrip line. The differences of voltage, current and circuitparameters between chamfered bent lines and right angle bent line are analyzed by electromagnetic theory.
The full-wave and circuit method are combined to be utilized to analyze the performance of the sinusoidal shaped microstrip bandstop filter. The static distributed circuit parameters of the filter are extracted with t...
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The full-wave and circuit method are combined to be utilized to analyze the performance of the sinusoidal shaped microstrip bandstop filter. The static distributed circuit parameters of the filter are extracted with the full-wave electromagnetic method, then used to construct the equivalent circuit. The frequency domain performance of the sinusoidal shaped microstrip bandstop filter are obtained with the input and characteristic impedance calculated from the equivalent circuit. Owing to better agreement between the S parameters obtained with static circuitparameters and the measured results, the effectiveness of the distributed circuit parameters applied to predict the performance of microstrip filter is verified.
The traditional transmission line equations are applied to analyze the circuitparameters of the ladder-type lossless microstrip lines. The distributed capacitance and inductance of the ladder-type microstrip lines ar...
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ISBN:
(纸本)9781479921249
The traditional transmission line equations are applied to analyze the circuitparameters of the ladder-type lossless microstrip lines. The distributed capacitance and inductance of the ladder-type microstrip lines are extracted. By changing the structural and electric parameters of microstrip lines, the variation of distributedcircuit with different substrate dielectric constants and cutting angles of ladder-type lines are obtained. Three kinds of transition angle (0 degrees, 45 degrees, 60 degrees) and three kinds of dielectric constant (3.9, 4.2, 4.5), which are commonly used parameters in actual interconnector design, are discussed.
The Generalized Transmission Line Equations are employed to analyze the circuitparameters of the microstrip lines. The static distributed capacitances and inductances of non-uniform microstrip lines are extracted. By...
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The Generalized Transmission Line Equations are employed to analyze the circuitparameters of the microstrip lines. The static distributed capacitances and inductances of non-uniform microstrip lines are extracted. By comparing the differences between the port's S-parameters respectively obtained by the extracted static circuitparameters using circuit method and by the Method of Moment directly, the applicable frequency range of the extracted static distributed circuit parameters can be found. The results show that the extracted static circuitparameters can be used in a frequency band from DC up to millimeter wave.
In this paper, the time domain circuit finite difference method is studied. This method can be used to analyze the transient transmission characteristics of the equivalent circuit constructed by the distributed circui...
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ISBN:
(纸本)9781424410446
In this paper, the time domain circuit finite difference method is studied. This method can be used to analyze the transient transmission characteristics of the equivalent circuit constructed by the distributed circuit parameters, which are extracted from the non-uniform transmission lines. The stability of the method is studied. The method is then used to analyze the reflected and transmitted pulse waveforms of the equivalent circuit. By comparing the waveforms obtained by this method with those obtained by FDTD, the applicability of this method can be studied.
A new numerical model of microstrip transmission line circuits in terms of distributed circuit parameters is here illustrated. Based on full-wave electromagnetic results, the extraction methods of these distributed ci...
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A new numerical model of microstrip transmission line circuits in terms of distributed circuit parameters is here illustrated. Based on full-wave electromagnetic results, the extraction methods of these distributed circuit parameters on different types of microstrip transmission line circuits are introduced. As a preparatory experiment, an improved CAD method using this model is tested on microstrip low-pass filter. Copyright (C) 2003 John Wiley Sons, Ltd.
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