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A Study of the Numerical Characteristics of the Envelope ADI-FDTD  

주세훈 (한양대학교 전자전기공학부)
정경영 (팬택&큐리텔 연구개발실)
김형훈 (광주여자대학교 컴퓨터공학과)
김형동 (한양대학교 전자전기공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.6, 2003 , pp. 584-590 More about this Journal
Abstract
In this paper, the numerical characteristics of the recently developed Envelope ADI-FDTD are investigated. Through numerical simulations, it is shown that the unconditional stability of the Envelope ADI-FDTD is independent of time step size and we can get better dispersion accuracy than the traditional ADI-FDTD by analyzing the envelope of the signal. This fact gives the opportunity for extending the temporal step size to the Nyquist limit in certain cases. Numerical results show that the Envelope ADI-FDTD can be used as an efficient electromagnetic analysis tool especially in the single frequency or band limited systems.
Keywords
ADI Technique; Envelope FDTD; Dispersion;
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