Dual-grid finite-difference time-domain scheme for the fast simulation of surrounded antennas

Pascaud, Romain; Gillard, Raphaël; Loison, Renaud; Wiart, Joe; Wong, M.F.

doi:10.1049/iet-map:20060233

Cited by 22 publications

(23 citation statements)

References 4 publications

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“…The monopole slot is easy to fabricate and can operate at its quarter-wavelength mode as the lowest resonant mode [1-3], which makes it promising to achieve wideband operation with a small size for mobile handset applications. Recently, several printed monopole slot antennas covering the wireless wide area network (WWAN) operation in the mobile handset have been demonstrated [4][5][6][7][8][9][10][11][12]. These reported monopole slot handset antennas for the WWAN operation are mainly excited using a microstrip feedline, which is generally not an efficient radiator for frequencies in the desired operating bands of the antenna.…”

Section: Received 13 September 2011mentioning

confidence: 99%

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Dual‐grid multiresolution technique for electrically large BoR‐FDTD simulation

Dahlan

Rolland

Sauleau

2012

Micro & Optical Tech Letters

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The dual‐grid (DG) technique is implemented in the body‐of‐revolution FDTD algorithm (BoR‐FDTD) for the fast analysis of large rotationally symmetric antennas.The proposed technique combines two BoR‐FDTD simulations performed successively with fine and coarse mesh schemes, respectively. First, all excitation sources are analyzed locally with a fine mesh resolution and the near‐field distributions are saved. Second, the whole problem (feeds and scatterers) is modeled using a coarser mesh where the computational domain is excited by the equivalent sources stored at the first stage. The continuity between these two simulations is guarantied by means of linear field interpolation or sampling (in space and time) and total/scattered field formulation. The relevance of the proposed technique is demonstrated through the analysis of a 60 × λ0 parabolic antenna system illuminated by an electromagnetic band gap feed. The DG technique is found to be accurate and faster than the classical BoR‐FDTD approach. Our results also show that significant savings are obtained in terms of computation time and memory. The DG‐BoR‐FDTD strategy is considered as a powerful and flexible approach to analyze the influence of the surrounding environments without having to repeat the expensive part of the simulation. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1714–1718, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26873

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Section: Received 13 September 2011mentioning

confidence: 99%

“…In this article, we introduce for the first time a new approach using the multiresolution technique known as the dual-grid (DG) method [12] to simulate electrically large BoR structures in cylindrical coordinates system. The test example selected here is a parabolic antenna system [ Fig.…”

Section: Introductionmentioning

confidence: 99%

Dual‐grid multiresolution technique for electrically large BoR‐FDTD simulation

Dahlan

Rolland

Sauleau

2012

Micro & Optical Tech Letters

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“…A hybrid method allowing modular analysis has been proposed recently [7]. This method, called DG-FDTD/PO, consists of a hybridization of the Dual-grid FDTD (DG-FDTD) [8] with Physical Optics (PO). The antenna and its complex vicinity are first analyzed in two successive FDTD steps.…”

Section: Introductionmentioning

confidence: 99%

Analysis of surrounded antennas mounted on large and complex structures using a hybrid method

Lepvrier

Loison

Gillard

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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“…As an alternative to classical subgridding approaches, the Dual Grid FDTD has been proposed in [7]. It proposes to perform sequentially FDTD simulations each with its own resolution.…”

Section: Introductionmentioning

confidence: 99%

Macromodel Based Dg-FDTD for Calculating Local Dosimetry in a Variable and Highly Multiscale Problem

Guelilia¹,

Loison²,

Gillard³

2014

PIER

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Abstract-This paper proposes a method to estimate human exposure to electromagnetic field radiation in a variable and highly multiscale problem. The electromagnetic field is computed using a combination of two methods: a rigorous time domain and multiscale method, the DG-FDTD (Dual Grid Finite Difference Time Domain) and a fast substitution model based on the use of transfer functions. The association of these methods is applied to simulate a scenario involving an antenna placed on a vehicle and a human body model located around it. The purpose is to assess the electromagnetic field in the left eye of the human body model. It is shown that this combination permits to analyse many different positions in a fast and accurate way.

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Dual-grid finite-difference time-domain scheme for the fast simulation of surrounded antennas

Abstract: International audienceUne nouvelle approche multirésolution en FDTD est présentée. La FDTD à grilles duales (DG-FDTD) s'avère être précise, rapide, et facile à mettre en oeuvre

Cited by 22 publications

References 4 publications

Dual‐grid multiresolution technique for electrically large BoR‐FDTD simulation

Dual‐grid multiresolution technique for electrically large BoR‐FDTD simulation

Analysis of surrounded antennas mounted on large and complex structures using a hybrid method

Macromodel Based Dg-FDTD for Calculating Local Dosimetry in a Variable and Highly Multiscale Problem

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