期刊
INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS
卷 26, 期 6, 页码 680-696出版社
WILEY-BLACKWELL
DOI: 10.1002/jnm.1875
关键词
FDTD; EC FDTD; cylindrical mesh; multigrid; traveling wave MRI
In this paper, we present a free and open source platform by using the equivalent-circuit finite-difference time-domain (FDTD) method adapted to cylindrical coordinates to efficiently model cylindrically shaped objects. We will address the special characteristics of a cylindrical FDTD mesh such as the mesh singularity at r=0 and discuss how cylindrical subgrids for small radii can reduce the simulation time considerably. Furthermore, we will demonstrate the applicability and advantages of this cylindrical equivalent-circuit FDTD method to evaluate new types of conformal ring antennas used in the context of high-field (7T) traveling wave magnetic resonance imaging (MRI). Copyright (c) 2012 John Wiley & Sons, Ltd.
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