A Robust Method to Accurately Treat Arbitrarily Curved 3-D Thin Conductive Sheets in FDTD

Schild, S.; Chavannes, N.; Kuster, Niels

doi:10.1109/tap.2007.910321

Cited by 13 publications

(8 citation statements)

References 15 publications

(19 reference statements)

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“…The algorithm proposed in [1] has been enhanced to include lossy media. The novel geometrical gridding engine guarantees suitable spatial discretization and, as a consequence, reliable simulation results even for the most complex applications.…”

Section: Resultsmentioning

confidence: 99%

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mentioning

confidence: 99%

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Extended FDTD scheme for thin conductive sheets with geometrical curvature analysis

Schild

Chavannes

Kuster

2007

2007 IEEE Antennas and Propagation Society International Symposium

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Based on the thin conductive (TC) sheet method shown in [1], an extended scheme to treat lossy TC sheets of arbitrary three-dimensional shape and curvature with the electromagnetic (EM) finite-difference time-domain (FDTD) algorithm is proposed. Due to the complexity of real-world FDTD applications such as mobile phones, the 3D models must be analyzed and correctly resolved to guarantee reliable accuracy at affordable computational costs. Thus, the method has been enhanced with an automated curvature analysis engine and simulation pre-processor to guarantee accurate treatment of highly curved objects in state-of-the-art real-world FDTD simulations.The method, including the geometric analysis engine, has been implemented within the framework of an EM FDTD software package. The novel methods have been applied to and tested on real-world applications such as mobile phones.

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Section: Resultsmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

Extended FDTD scheme for thin conductive sheets with geometrical curvature analysis

Schild

Chavannes

Kuster

2007

2007 IEEE Antennas and Propagation Society International Symposium

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“…The RF solver is based on the Finite-Difference Time-Domain (FDTD) method enhanced with multiple method extensions that enhance the accuracy and speed [27]- [29]. The simulation frequencies selected in this study are 900 MHz, 1750 MHz and 1800 MHz.…”

Section: A Models and Methodsmentioning

confidence: 99%

Influence of the Hand on the Specific Absorption Rate in the Head

Douglas

Ofli

et al. 2012

IEEE Trans. Antennas Propagat.

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The influence of the user's hand holding a mobile phone to the ear on the peak spatial-average Specific Absorption Rate (psSAR) averaged over any 1 g and 10 g of tissue in the head is investigated. This study is motivated by recent reports that found substantial increases in psSAR by the presence of the hand in some cases. Current measurement standards prescribe the measurement of SAR in a head phantom without a hand present. The mechanisms of interaction between the hand and mobile phone models are studied. Simulations and measurements at 900 and 1800 MHz have been conducted to complement the understanding of the hand grip parameters leading to higher SAR in the head. Numerical simulations were conducted on four mobile phone models, and parameters such as the palm-phone distance and hand position were varied. Measurements of 46 commercial mobile phones were made, and the maximum psSAR with different hand positions and palm-phone distances was recorded. Both simulations and measurements have found increases in the psSAR in the head of at least 2.5 dB due to the presence of the hand. Furthermore, the psSAR is sensitive to the hand grip, i.e., the variations can exceed 3 dB.

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“…Many applications in the framework of frequency-selective surfaces, graphene structures, radome design, microstrip antennas and antenna arrays, just as examples, involve thin layers of dielectric/conducting materials [1][2][3][4][5][6][7][8][9][10]. For these reasons, such structures have been extensively studied in the past decades and even more recently.…”

Section: Introductionmentioning

confidence: 99%

A Fast-Converging Scheme for the Electromagnetic Scattering from a Thin Dielectric Disk

et al. 2020

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In this paper, the analysis of the electromagnetic scattering from a thin dielectric disk is formulated as two sets of one-dimensional integral equations in the vector Hankel transform domain by taking advantage of the revolution symmetry of the problem and by imposing the generalized boundary conditions on the disk surface. The problem is further simplified by means of Helmholtz decomposition, which allows to introduce new scalar unknows in the spectral domain. Galerkin method with complete sets of orthogonal eigenfunctions of the static parts of the integral operators, reconstructing the physical behavior of the fields, as expansion bases, is applied to discretize the integral equations. The obtained matrix equations are Fredholm second-kind equations whose coefficients are efficiently numerically evaluated by means of a suitable analytical technique. Numerical results and comparisons with the commercial software CST Microwave Studio are provided showing the accuracy and efficiency of the proposed technique.

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A Robust Method to Accurately Treat Arbitrarily Curved 3-D Thin Conductive Sheets in FDTD

Cited by 13 publications

References 15 publications

Extended FDTD scheme for thin conductive sheets with geometrical curvature analysis

Extended FDTD scheme for thin conductive sheets with geometrical curvature analysis

Influence of the Hand on the Specific Absorption Rate in the Head

A Fast-Converging Scheme for the Electromagnetic Scattering from a Thin Dielectric Disk

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