Analysis of radiation characteristics of a finite-length transmission line using a circuit-concept approach

Kami, Yoshio; Sato, Risaburô

doi:10.1109/15.2396

Cited by 33 publications

(13 citation statements)

References 7 publications

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“…As the potential energy of the unbalanced charge distribution is converted to the kinetic energy in the motion of the unbalanced electrons, additional potential energy is spent to overcome the opposing radiation forces. The convection electrons attain velocities that are lower than those defined by (11) and (12), which are valid only in the absence of radiation. We account for radiation forces by redefining the acceleration in (6) as…”

Section: The Unbalanced Transmission Line Modelmentioning

confidence: 96%

“…where C v S is the volume capacitance in F − m. We can now solve for the convection current by combining (9), (11), (12), and (15)…”

Section: The Unbalanced Transmission Line Modelmentioning

confidence: 99%

“…Convection current alters the propagation characteristic of the line in a complex way and causes nonlinearities that are not modeled by the classical transmission line theory. None of the generalizations of the classical theory found in the literature [6][7][8][9][10][11][12] model radiation or the flow of the nonlinear convection currents. Reference [13] models the quantum mechanical effect of discrete electronic charges in mesoscopic scale but does not consider the flow of bulk convection current or radiation.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Radiation From Unbalanced Transmission Lines

McLain

2012

PIER B

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Abstract-A theory for the electromagnetic radiation from unbalanced transmission lines is developed. It is shown that radiation results from the convection current that develops in unbalanced transmission lines where the resistances of the lines are unequal. The process that leads to the generation of the nonlinear convection current in unbalanced transmission lines is explained. It is proved that the classical transmission line theory is not valid for unbalanced lines. The convection current and the radiation forces are included in the transmission line equations to develop a generalized model valid for all twoconductor transmission lines. The generalized model is validated via comparisons of its numerical solutions with laboratory measurements.

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Section: The Unbalanced Transmission Line Modelmentioning

confidence: 96%

“…where C v S is the volume capacitance in F − m. We can now solve for the convection current by combining (9), (11), (12), and (15)…”

Section: The Unbalanced Transmission Line Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Radiation From Unbalanced Transmission Lines

McLain

2012

PIER B

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“…2(a). As a validation test, the near field pattern from the analytical calculation [6] is shown in Fig. 2(b).…”

Section: Reconstruction Of Near-field Patternmentioning

confidence: 99%

Reconstruct the near-field pattern from limited measurements based on compressed sensing

Xiao

Kami

2014

IEICE ComEX

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Compressed sensing (CS) is a recent breakthrough in the signal processing area. In this letter, we propose to use the compressed sensing to reconstruct the near-field pattern from a small set of measurements. Results for the near magnetic field recovery on the printed circuit board (PCB) from limited real data and comparisons with the analytical results are provided, showing the validity of the proposed approach in the reduction of the measurement expense. Keywords: compressed sensing, near field, electromagnetic interference Classification: Electromagnetic Compatibility (EMC) References[1] A. Barriere, J.-A. Laurin, and Y. Goussard, "Mapping of equivalent currents on high-speed digital printed circuit boards based on near-field measurements," IEEE Trans.

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“…From the standpoint that understanding of the generation/propagation mechanism is essential for suppression of unwanted electromagnetic waves, this author has been performing research on transmission/radiation characteristics in parallel two-wire lines with a bend, microstrip lines, and multiconductor transmission lines. Previously, various methods have been applied to parallel two-wire lines with a bend, constituting a basic configuration of transmission lines [1][2][3][4][5]. For instance, in Ref.…”

Section: Introductionmentioning

confidence: 99%

FDTD analysis of the transmission/radiation characteristics of 90° bent transmission lines

Shiokawa

2004

Electron. Comm. Jpn. Pt. I

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SUMMARYRecently, with the advent of personal high-performance electronic devices such as computers and with proliferation of mobile communications such as cellular phones, reduction of the size and weight of the systems, enhancement of processing speed, and voltage reduction of the electronic devices have been pursued. As a result, the problems of interference by unwanted electromagnetic waves between various devices and within individual devices have appeared. Various approaches are conceivable. The author has been performing research on these problems from the standpoint that the electromagnetic elucidation of the generation and propagation mechanisms of the unwanted waves is essential. In the present paper, the voltage and current distributions on a parallel two-wire line with a bend, representing the basic configuration of a transmission line, are analyzed by the FDTD method. By using this analysis, the complex power near the bend is derived and the transmission/radiation characteristics at the bend are quantitatively elucidated. Next, the transmission/radiation characteristics of a microstrip line with a 90° bend are analyzed by the FDTD method in the case where an adjacent line exists. In this way, the effect of the adjacent line is elucidated.

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Analysis of radiation characteristics of a finite-length transmission line using a circuit-concept approach

Cited by 33 publications

References 7 publications

Electromagnetic Radiation From Unbalanced Transmission Lines

Electromagnetic Radiation From Unbalanced Transmission Lines

Reconstruct the near-field pattern from limited measurements based on compressed sensing

FDTD analysis of the transmission/radiation characteristics of 90° bent transmission lines

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