MNL-FDTD/SPICE Method for Fast Analysis of Short-Gap ESD in Complex Systems

Fujita, Kazuhiro

doi:10.1109/temc.2016.2532888

Cited by 21 publications

(17 citation statements)

References 37 publications

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“…CP and SS are simulated by the linear MNL-FDTD scheme with a current [7]. In the FIT notation, it can be expressed as follows:…”

Section: Discussionmentioning

confidence: 99%

Nonlinear MNL‐FDTD scheme for short‐gap electrostatic discharge simulation

Fujita

2016

Electron. lett.

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A nonlinear and partially implicit finite-difference time-domain scheme with a relaxed stability condition is presented for fast full-wave simulation of electrostatic discharges occurred at a short gap. The nonlinear spark resistance model of Rompe and Weizel is directly incorporated in this scheme. Its stability, accuracy and computational efficiency are assessed in the application to a metallic structure system. Introduction: Full-wave modelling of electrostatic discharges (ESDs) has been developed and extended for different numerical methods [1][2][3][4]. The finite-difference time-domain (FDTD) method is a computationally efficient approach for simulating discharge currents and transient fields caused by ESDs in a system because it is explicit, i.e. requiring no matrix solution. In [1,2], the classical explicit FDTD scheme is extended to include the spark resistance model by Rompe and Weizel (RW) [5]. The extended FDTD scheme is nonlinear but still explicit, and therefore the so-called Courant-Friedrichs-Lewy (CFL) condition must be satisfied to ensure its stability. If a short gap compared with other geometries exists, the maximum stable time step allowed for this scheme can be severely limited by a small mesh width inside the gap. This will make the extended explicit scheme [1, 2] time-consuming.In this Letter, a nonlinear and partially implicit FDTD scheme is presented for fast full-wave simulation of ESD occurred at a short gap. This scheme is based on combining the magnetically mixed Newmark-Leapfrog (MNL) FDTD method [6,7] with the RW model. Its stability condition does not include the mesh width in a spark channel direction, and thus the number of time steps can be reduced by using a larger step size than the CFL condition. As an application, geometry dependency of short-gap ESD caused in a metallic structure system is studied. It is shown that the presented scheme is faster than the extended explicit one, while maintaining the same level of accuracy.

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“…CP and SS are simulated by the linear MNL-FDTD scheme with a current [7]. In the FIT notation, it can be expressed as follows:…”

Section: Discussionmentioning

confidence: 99%

Nonlinear MNL‐FDTD scheme for short‐gap electrostatic discharge simulation

Fujita

2016

Electron. lett.

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“…ESD jeopardizes the reliability and protection of electronic equipment, while lightning can quickly damage the whole system. A DC ground is the most viable and effective technique applied in military applications [37]. The antenna is mainly made of brass and DC grounded.…”

Section: Antenna Configurationmentioning

confidence: 99%

Low Gain Ripple and DC-Grounded Slant-Polarized Formulation With 360° Broadbeam Coverage

et al. 2020

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“…Figuring the total electric field in the azimuthal plane under different d by (1), the result is displayed in Fig. 4a.…”

Section: Design Principle and Antenna Geometrymentioning

confidence: 99%

“…Besides, electrostatic discharge (ESD) can go through the system via antenna. ESD problems widely exists in the electronics industry [1][2][3]. They bring electromagnetic interference and electromagnetic compatibility problems which affect the reliability and security of electronic equipment.…”

Section: Introductionmentioning

confidence: 99%

DC ground compact wideband omnidirectional vertically polarised slot loop antenna for 4G long‐term evolution applications

Cai¹,

Qi²,

Weng

et al. 2018

IET Microwaves, Antennas & Propagation

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A compact, wideband, omnidirectional, vertically polarised antenna without electrostatic discharge problems is proposed in this study for 4G long‐term evolution applications. The proposed antenna is composed of three identical basic radiators separated by an angle of 120°. The basic radiator is based on a slot loop which is a wideband and DC ground structure. By bending the basic radiators, the antenna achieves better impedance matching and lower gain variation in the horizontal plane in a compact size. The proposed antenna reaches a fractional bandwidth of 45.5% for the voltage standing wave ratio (VSWR) <1.5, a peak gain from 2.4 to 3.8 dBi with a gain ripple around 2 dB in the omnidirectional plane. It operates from 1700 to 2700 MHz, covering most 4G long‐term evolution frequency bands. Both simulation and measurement of a prototype is done in this study to verify the antenna performance.

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MNL-FDTD/SPICE Method for Fast Analysis of Short-Gap ESD in Complex Systems

Cited by 21 publications

References 37 publications

Nonlinear MNL‐FDTD scheme for short‐gap electrostatic discharge simulation

Nonlinear MNL‐FDTD scheme for short‐gap electrostatic discharge simulation

Low Gain Ripple and DC-Grounded Slant-Polarized Formulation With 360° Broadbeam Coverage

DC ground compact wideband omnidirectional vertically polarised slot loop antenna for 4G long‐term evolution applications

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