Title :
3D macromodels in the FDTD filter analysis
Author :
Kulas, Lukasz ; Mrozowski, Michal
Author_Institution :
Dept. of Electron., Telecommun. & Informatics, Gdansk Univ. of Technol., Poland
Abstract :
This paper shows an application of 3D macromodels to filter analysis by means of the FDTD method macromodels are created using 3D FDFD description of the volume where singularities occur during a filter analysis. State equations are then used to form a second order system, which is reduced using ENOR algorithm. Reduced system (a macromodel) captures the singularity frequency behavior using a limited number of variables and is incorporated into the finite difference time domain routine as an iterative leap-frog scheme. Unlike subgridding this approach gives a high spatial resolution at a cost slightly shorter time step. Moreover, it allows one to analyze filters having strong field singularities accurately at the numerical cost comparable to that of the standard FDTD scheme.
Keywords :
filtering theory; finite difference time-domain analysis; iterative methods; 3D macromodels; ENOR algorithm; FDTD filter analysis; finite difference time domain routine; iterative leap-frog scheme; second order system; singularity frequency behavior; spatial resolution; state equations; subgridding; Costs; Filters; Finite difference methods; Frequency; Iterative algorithms; Maxwell equations; Shape; Space technology; Time domain analysis; Vectors;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2004. MIKON-2004. 15th International Conference on
Print_ISBN :
83-906662-7-8
DOI :
10.1109/MIKON.2004.1357134