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On the field leakage of the leapfrog ADI‐FDTD method for nonpenetrable targets
Author(s) -
Gan Theng Huat,
Tan Eng Leong
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28366
Subject(s) - finite difference time domain method , leakage (economics) , lossy compression , microwave , computer science , electronic engineering , engineering , physics , optics , telecommunications , artificial intelligence , economics , macroeconomics
This letter investigates the field leakage of the leapfrog alternating‐direction‐implicit finite‐difference time‐domain (ADI‐FDTD) method for nonpenetrable targets. The update equation for lossy media using time‐averaging scheme is reviewed. Investigation reveals that the leapfrog ADI‐FDTD method has substantial nonphysical field leakage within the target. To overcome the field leakage, a simple approach is proposed. Numerical results are presented to validate the proposed approach. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1401–1405, 2014