DocumentCode :
109208
Title :
A Hybrid Time-Domain Discontinuous Galerkin-Boundary Integral Method for Electromagnetic Scattering Analysis
Author :
Ping Li ; Yifei Shi ; Li Jun Jiang ; Bagci, Hakan
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Volume :
62
Issue :
5
fYear :
2014
fDate :
May-14
Firstpage :
2841
Lastpage :
2846
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.
Keywords :
Galerkin method; boundary integral equations; electromagnetic wave scattering; time-domain analysis; DGTD method; Huygens surface; TDBI method; computation domain; discontinuous Galerkin time-domain method; electromagnetic scattering analysis; equivalent currents; hybrid DGTDBI; numerical flux; radiation condition; time-domain boundary integral method; truncation boundary; Computational modeling; Electromagnetic scattering; Integral equations; Magnetic domains; Method of moments; Plasmas; Time-domain analysis; Boundary integral (BI) method; Huygens´ principle; disconnected/concave scatterers; discontinuous Galerkin time-domain (DGTD) method;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2014.2307294
Filename :
6746097
Link To Document :
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