A hybrid time-domain discontinuous galerkin-boundary integral method for electromagnetic scattering analysis

Ping Li; Yifei Shi; Lijun Jiang; Hakan Bagci

doi:10.1109/TAP.2014.2307294

A hybrid time-domain discontinuous galerkin-boundary integral method for electromagnetic scattering analysis

Ping Li, Yifei Shi, Lijun Jiang, Hakan Bagci

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

A scheme hybridizing discontinuous Galerkin time-domain (DGTD) and time-domain boundary integral (TDBI) methods for accurately analyzing transient electromagnetic scattering is proposed. Radiation condition is enforced using the numerical flux on the truncation boundary. The fields required by the flux are computed using the TDBI from equivalent currents introduced on a Huygens' surface enclosing the scatterer. The hybrid DGTDBI ensures that the radiation condition is mathematically exact and the resulting computation domain is as small as possible since the truncation boundary conforms to scatterer's shape and is located very close to its surface. Locally truncated domains can also be defined around each disconnected scatterer additionally reducing the size of the overall computation domain. Numerical examples demonstrating the accuracy and versatility of the proposed method are presented. © 2014 IEEE.

Original language	English (US)
Pages (from-to)	2841-2846
Number of pages	6
Journal	IEEE Transactions on Antennas and Propagation
Volume	62
Issue number	5
DOIs	https://doi.org/10.1109/TAP.2014.2307294
State	Published - May 2014

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1109/TAP.2014.2307294

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title = "A hybrid time-domain discontinuous galerkin-boundary integral method for electromagnetic scattering analysis",

abstract = "A scheme hybridizing discontinuous Galerkin time-domain (DGTD) and time-domain boundary integral (TDBI) methods for accurately analyzing transient electromagnetic scattering is proposed. Radiation condition is enforced using the numerical flux on the truncation boundary. The fields required by the flux are computed using the TDBI from equivalent currents introduced on a Huygens' surface enclosing the scatterer. The hybrid DGTDBI ensures that the radiation condition is mathematically exact and the resulting computation domain is as small as possible since the truncation boundary conforms to scatterer's shape and is located very close to its surface. Locally truncated domains can also be defined around each disconnected scatterer additionally reducing the size of the overall computation domain. Numerical examples demonstrating the accuracy and versatility of the proposed method are presented. {\textcopyright} 2014 IEEE.",

author = "Ping Li and Yifei Shi and Lijun Jiang and Hakan Bagci",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported in part by the Research Grants Council of Hong Kong (GRF 713011, GRF 712612, and 711511), NSFC 61271158, US AR120018, and Hong Kong UGC AoE/P-04/08.",

year = "2014",

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doi = "10.1109/TAP.2014.2307294",

language = "English (US)",

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AU - Li, Ping

AU - Shi, Yifei

AU - Jiang, Lijun

AU - Bagci, Hakan

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported in part by the Research Grants Council of Hong Kong (GRF 713011, GRF 712612, and 711511), NSFC 61271158, US AR120018, and Hong Kong UGC AoE/P-04/08.

PY - 2014/5

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N2 - A scheme hybridizing discontinuous Galerkin time-domain (DGTD) and time-domain boundary integral (TDBI) methods for accurately analyzing transient electromagnetic scattering is proposed. Radiation condition is enforced using the numerical flux on the truncation boundary. The fields required by the flux are computed using the TDBI from equivalent currents introduced on a Huygens' surface enclosing the scatterer. The hybrid DGTDBI ensures that the radiation condition is mathematically exact and the resulting computation domain is as small as possible since the truncation boundary conforms to scatterer's shape and is located very close to its surface. Locally truncated domains can also be defined around each disconnected scatterer additionally reducing the size of the overall computation domain. Numerical examples demonstrating the accuracy and versatility of the proposed method are presented. © 2014 IEEE.

AB - A scheme hybridizing discontinuous Galerkin time-domain (DGTD) and time-domain boundary integral (TDBI) methods for accurately analyzing transient electromagnetic scattering is proposed. Radiation condition is enforced using the numerical flux on the truncation boundary. The fields required by the flux are computed using the TDBI from equivalent currents introduced on a Huygens' surface enclosing the scatterer. The hybrid DGTDBI ensures that the radiation condition is mathematically exact and the resulting computation domain is as small as possible since the truncation boundary conforms to scatterer's shape and is located very close to its surface. Locally truncated domains can also be defined around each disconnected scatterer additionally reducing the size of the overall computation domain. Numerical examples demonstrating the accuracy and versatility of the proposed method are presented. © 2014 IEEE.

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JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

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ER -

A hybrid time-domain discontinuous galerkin-boundary integral method for electromagnetic scattering analysis

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