Squeezing of open boundaries by Maxwell-consistent real coordinate transformation

Dzmitry Shyroki

doi:10.1109/LMWC.2006.884768

Squeezing of open boundaries by Maxwell-consistent real coordinate transformation

Dzmitry Shyroki

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Abstract

To emulate open boundaries within a finite computational domain, real-function coordinate transformation consistent with generally covariant Maxwell equations is proposed. The mapping-realized with arctangent function here-has a transparent geometric meaning of pure squeezing of coordinates, does not introduce artificially lossy layers (or "lossy coordinates") to absorb outgoing radiation, nor lead to spurious non-Maxwellian fields. In finite-difference frequency-domain calculations on staggered grid, clear superiority over perfectly matched layers is demonstrated by the proposed technique, at a lower computation cost, in drastic elimination of parasitic coupling of guided modes to the boundaries of the computational window.

Original language	English
Journal	IEEE Microwave and Wireless Components Letters
Volume	31
Issue number	11
Pages (from-to)	576-578
ISSN	1531-1309
DOIs	https://doi.org/10.1109/LMWC.2006.884768
Publication status	Published - 2006

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Copyright: 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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JO - IEEE Microwave and Wireless Components Letters

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Squeezing of open boundaries by Maxwell-consistent real coordinate transformation

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