A Hybrid Method Combining the Novel TD-SC Technique and FDTD Method for the EMI Analysis of Transmission Line Network

Ye, Zhihong; Liao, Cheng; Xiong, Xinhong; Zhang, Min

doi:10.1109/temc.2017.2651884

Cited by 26 publications

(14 citation statements)

References 19 publications

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“… C and L represent the per‐unit‐length capacitance and inductance of the internal line, respectively, which can be computed by the formulas L = μ 0 ln(2 h / a )/2 π and C = 2 πε 0 /ln(2 h / a ), where h is the distance between the internal line and the bottom of the cavity, and a is the radius of the internal line. V F ( z , t ) and I F ( z , t ) represent the equivalent distributed voltage and current sources, respectively, which can be expressed as

V_{F} ((), z, t) = - \frac{\partial}{\partial z} E_{T} ((), z, t) + E_{L} ((), z, t)

I_{F} ((), z, t) = - bold-italicC \frac{\partial}{\partial t} E_{T} ((), z, t)

…”

Section: Theory Of the Time Domain Hybrid Methodsmentioning

confidence: 99%

“…FDTD‐TL method is the research basis of this article. It uses the FDTD method to calculate the excitation fields of the TLs, and then the TL equations is utilized to obtain the transient responses on the lines . The advantage of this method compared with other methods is that it can realize the cooperative calculations of electromagnetic field radiation and the coupling responses on the lines.…”

Section: Introductionmentioning

confidence: 99%

“…It uses the FDTD method to calculate the excitation fields of the TLs, and then the TL equations is utilized to obtain the transient responses on the lines. 9 The advantage of this method compared with other methods is that it can realize the cooperative calculations of electromagnetic field radiation and the coupling responses on the lines. However, the electromagnetic environments of the penetrated wire in the outer and inner spaces of the cavity are different, which makes it difficult to build the coupling model of the penetrated wire by using FDTD-TL method simply.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coupling analysis of ambient wave to the shielded cavity with penetrated wire using a time domain hybrid method

Zhou

Gou

et al. 2019

Micro & Optical Tech Letters

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Due to the numerical methods used for the coupling analysis of the shielded cavity with penetrated wire excited by ambient wave are lack, an efficient time domain hybrid method is presented in this article, which consists of thin wire finite difference time domain (FDTD) method and hybrid FDTD and transmission line equations method (called FDTD‐TL method). In this method, the penetrated wire is decomposed into external and internal transmission lines according to the enclosure structure of the shielded cavity firstly. Then the thin wire FDTD method is applied to calculate the currents on the external transmission line, which are enforced as the boundary of the internal transmission line naturally. Meanwhile the FDTD‐TL method is used to build the coupling model of ambient wave to the internal transmission line to obtain the voltage and current responses on the terminal load of internal line. This method has one prominent advantage is that it can realize the cooperative calculations of electromagnetic field radiation and the coupling responses on the penetrated wire. Finally, two numerical simulations of ambient wave to one shielded cavity with penetrated wire in the free space and shielded cavity are utilized to verify the accuracy and efficiency of this presented method by comparing with the electromagnetic software CST.

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V_{F} ((), z, t) = - \frac{\partial}{\partial z} E_{T} ((), z, t) + E_{L} ((), z, t)

I_{F} ((), z, t) = - bold-italicC \frac{\partial}{\partial t} E_{T} ((), z, t)

…”

Section: Theory Of the Time Domain Hybrid Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Coupling analysis of ambient wave to the shielded cavity with penetrated wire using a time domain hybrid method

Zhou

Gou

et al. 2019

Micro & Optical Tech Letters

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“…The core idea of this technique is slicing the enclosure to obtain the intersection lines between the triangular surface elements and cutting planes, and then using line scanning method to judge the specific electromagnetic attributes of each grid in space. The mesh generation process of this technique is shown in Figure , and the detailed implementation of this technique can be found in References [].…”

Section: Theory Of the Time Domain Hybrid Methodsmentioning

confidence: 99%

Coupling analysis of multiple linear antennas fed by coaxial lines on electronic system with a time domain hybrid method

Shi

et al. 2019

Micro & Optical Tech Letters

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Due to the shielding structures of electronic system and coaxial lines feeding the antennas are complex, full‐wave algorithms applied for the coupling analysis of multiple linear antennas on electronic system excited by ambient wave should occupy amount of memories by meshing the structures of coaxial lines and electronic system in fine grid, which may affect the computation efficiency. This paper presents a time domain hybrid method, which consisting of thin wire finite‐difference time domain (FDTD) method, transmission line (TL) equations, higher order FDTD scheme, and an auto mesh generator technique. In this method, the thin wire FDTD combined with the auto mesh generator technique is utilized to mesh the shielding structure of electronic system rapidly and obtain the current responses on the conductor columns of linear antennas, which are extracted equivalent current sources for the further coupling analysis of coaxial lines. And then the TL equations are adopted to build the coupling models of coaxial lines, and solved by the higher order FDTD scheme to compute the transient responses on the coaxial lines and terminal loads of the lines. This method has one significant feature is that it can avoid modeling the structures of linear antennas and coaxial lines directly. The accuracy of this method has been verified by comparing with the simulation software Computer Simulation Technology (CST) via the coupling simulations of one and three linear antennas on electronic system excited by ambient plane wave.

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“…The FDTD-SPICE method [5][6][7][8][9][10][11] is a time domain method, while this method needs a number of theoretical derivations, and the calculation of the electromagnetic fields and transient responses on the transmission lines and loads are separated. The FDTD-TL method [12][13][14] is the previous research of our group. In this method, the FDTD method is used to compute the excitation fields of transmission lines, and the coupling model of ambient wave to transmission lines is established via TL equations.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Method for the Coupling Analysis of Multiconductor Transmission Lines Excited by Dipole Antenna

Ye¹,

Gou²,

Zhou³

et al. 2018

PIER Letters

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This paper presents a hybrid method consisting of thin wire FDTD method and transmission line (TL) equations to be used for the coupling analysis of multiconductor transmission lines (MTLs) excited by a dipole antenna. In this method, the thin wire FDTD method is used to build the structure of the dipole antenna and obtain the radiation electromagnetic fields surrounding the MTLs, which are introduced into the TL equations as the distribution sources. The TL equations are utilized to model the coupling of the radiation electromagnetic fields to the MTLs, which are discrete by the scheme of the FDTD method to obtain the transient voltage and current responses on the lines and terminal loads. The accuracy and efficiency of this method have been verified by comparing with the commercial simulation software CST via one case. Moreover, the influences of the frequencies and polarization of the dipole antenna and the heights of the MTLs on the coupling of MTLs are analyzed.

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A Hybrid Method Combining the Novel TD-SC Technique and FDTD Method for the EMI Analysis of Transmission Line Network

Cited by 26 publications

References 19 publications

Coupling analysis of ambient wave to the shielded cavity with penetrated wire using a time domain hybrid method

Coupling analysis of ambient wave to the shielded cavity with penetrated wire using a time domain hybrid method

Coupling analysis of multiple linear antennas fed by coaxial lines on electronic system with a time domain hybrid method

A Hybrid Method for the Coupling Analysis of Multiconductor Transmission Lines Excited by Dipole Antenna

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