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An improved formalism for FDTD analysis of thin-slot problems by conformal mapping technique
- Source :
- IEEE Transactions on Antennas and Propagation. Sept, 2003, Vol. 51 Issue 9, p2530, 4 p.
- Publication Year :
- 2003
-
Abstract
- An improved expression of the thin-slot formalism has been proposed to alleviate the gridding of the finite-difference time-domain (FDTD) solution for electromagnetic problems involving narrow slots. By applying the conformal mapping technique, the varying field distribution near the slots is analytically derived and fully cast into a unit FDTD cell with effective permittivity and permeability. As a result, this formalism permits narrow slots to be modeled without reducing spatial grid size, even when the slot gap width is much smaller than a one space grid. The method has been applied to several transmission line problems and the results are compared with traditional FDTD and other thin-slot formalisms. It is verified that the proposed method is easy to implement, numerically efficient, and accurate. Index Terms--Conformal mapping technique, finite-difference time-domain (FDTD), thin slot formalism.
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 51
- Issue :
- 9
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Antennas and Propagation
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.108478136