Title :
Handling of the perfect electric conductor in higher-order FDTD method
Author :
Wu, Wei Yang ; Kuo, Chih Wen
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
The higher-order FDTD method has the advantage of reducing the phase error due to numerical dispersion. One of the main difficulties in applying the higher-order FDTD method to scattering problems is the handling of the perfect electric conductor that is often encountered. When the long stencil of the higher-order spatial difference operation crosses a PEC boundary, erroneous results are obtained if the PEC boundary is not properly handled. This paper presents a scheme efficiently processing the PEC boundary in the S24 FDTD algorithm. Combined with Berenger´s original PML, the method gives accurate results compared with those obtained by the original S22 algorithm
Keywords :
conductors (electric); electromagnetic wave propagation; electromagnetic wave scattering; finite difference time-domain analysis; Berenger PML; PEC boundary; S24 FDTD algorithm; absorbing boundary condition; electric components; higher-order FDTD method; higher-order spatial difference operation; long range propagation problem; magnetic components; perfect electric conductor; perfectly matched layer; scattering problems; Buffer layers; Buildings; Centralized control; Computer errors; Conductors; Error correction; Finite difference methods; Scattering; Size control; Time domain analysis;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985622
