FDTD Analysis of Chiral Discontinuities in Waveguides

Cao, De-An; Chu, Qing‐Xin

doi:10.2528/pierl10120203

Cited by 7 publications

(7 citation statements)

References 13 publications

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“…The finite-difference time-domain (FDTD) method has been widely applied in solving many types of electromagnetic scattering problems [1][2][3][4][5][6][7][8]. It possesses the advantages of simple and accurate implementation for relatively complex problems.…”

Section: Introductionmentioning

confidence: 99%

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Xiong¹,

Chen²,

Mao³

et al. 2012

PIER

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Abstract-This paper brings forward a simple local approximation finite-difference time-domain (FDTD) method for the analysis of short apertures with a finite thickness. By applying the equivalence principle together with a simple local approximation, the varying field distribution is accurately derived. The updating equations for the slot field can be derived by casting the field distributions into the contour paths containing the apertures. The method has been applied to two problems and the results are compared with the high-resolution standard FDTD simulation results and the measurement results. The accuracy of the proposed method is verified from the comparison of both the field distribution and the time-domain and frequency-domain slot coupling results. It is demonstrated that the local approximation is highly efficient and timesaving, and the present method is stable, numerically and computationally efficient.

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Section: Introductionmentioning

confidence: 99%

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Xiong¹,

Chen²,

Mao³

et al. 2012

PIER

View full text Add to dashboard Cite

show abstract

“…The finite-difference time-domain (FDTD) method has been widely applied in solving many types of electromagnetic problems [9][10][11][12][13][14][15][16][17], and it has been used to investigate the transient characteristics of grounding systems since 2001 [18,19]. However, it is difficult to use the general FDTD method to calculate the TGR of the engineering practice grounding systems, because the engineering used electrode is electrically small compared with the dimension of the grounding system.…”

Section: Introductionmentioning

confidence: 99%

Transient Resistance Analysis of Large Grounding Systems Using the FDTD Method

Xiong¹,

Chen²,

Han³

et al. 2012

PIER

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Abstract-In this work, a new method has been proposed for the finite-difference time-domain (FDTD) analysis of the transient grounding resistance (TGR) of large grounding systems. To calculate the TGR, a coarse grid is occupied to model the earthing conductor, the convolution PML (CPML) is chose to truncate the computational domain, and the parallel implementation is involved to overcome the memory limit of the serial FDTD. With this model, the effect of the earthing conductor number and topology structure, the buried depth, and the ground permittivity and conductivity on the TGR is tested to find an optimized program to decrease the TGR of the lightning protection grounding systems.

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“…Because of its simplicity and flexibility, this method has become one of the popular algorithms in solving a wide variety of problems in electromagnetics. The nature of the FDTD [2][3][4] method is that simulation of big and complicated electromagnetic (EM) field problems requires a vast amount of computer operational memory and runtime. Parallel-processing techniques [5][6][7] have been broadly applied in FDTD method, and the parallel-processing FDTD further accelerates the FDTD simulation by distributing the job to multiple processors.…”

Section: Introductionmentioning

confidence: 99%

Parallel FDTD Simulation Using Numa Acceleration Technique

Guo¹,

Guo²,

Zhao³

et al. 2012

PIER Letters

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Abstract-In this paper, we introduce a new non-uniform memory access (NUMA) acceleration algorithm for parallel finite-difference time-domain (FDTD) method on NUMA architecture workstation. We compare the performance of parallel FDTD method with and without the NUMA acceleration technique. An ideal test case and an engineering example show that the NUMA acceleration technique can efficiently improve the computing performance of FDTD parallel applications.

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FDTD Analysis of Chiral Discontinuities in Waveguides

Cited by 7 publications

References 13 publications

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Transient Resistance Analysis of Large Grounding Systems Using the FDTD Method

Parallel FDTD Simulation Using Numa Acceleration Technique

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