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    On the static loop modes in the marching-on-in-time solution of the time-domain electric field integral equation

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    Type
    Article
    Authors
    Shi, Yifei cc
    Bagci, Hakan cc
    Lu, Mingyu
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Computational Electromagnetics Laboratory
    Date
    2014
    Permanent link to this record
    http://hdl.handle.net/10754/563195
    
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    Abstract
    When marching-on-in-time (MOT) method is applied to solve the time-domain electric field integral equation, spurious internal resonant and static loop modes are always observed in the solution. The internal resonant modes have recently been studied by the authors; this letter investigates the static loop modes. Like internal resonant modes, static loop modes, in theory, should not be observed in the MOT solution since they do not satisfy the zero initial conditions; their appearance is attributed to numerical errors. It is discussed in this letter that the dependence of spurious static loop modes on numerical errors is substantially different from that of spurious internal resonant modes. More specifically, when Rao-Wilton-Glisson functions and Lagrange interpolation functions are used as spatial and temporal basis functions, respectively, errors due to space-time discretization have no discernible impact on spurious static loop modes. Numerical experiments indeed support this discussion and demonstrate that the numerical errors due to the approximate solution of the MOT matrix system have dominant impact on spurious static loop modes in the MOT solution. © 2014 IEEE.
    Citation
    Shi, Y., Bagci, H., & Lu, M. (2014). On the Static Loop Modes in the Marching-on-in-Time Solution of the Time-Domain Electric Field Integral Equation. IEEE Antennas and Wireless Propagation Letters, 13, 317–320. doi:10.1109/lawp.2014.2305716
    Sponsors
    This work was supported in part by the National Science Foundation under Grant ECCS 1303142 and the Center for Uncertainty Quantification in Computational Science and Engineering at KAUST.
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Antennas and Wireless Propagation Letters
    DOI
    10.1109/LAWP.2014.2305716
    ae974a485f413a2113503eed53cd6c53
    10.1109/LAWP.2014.2305716
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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