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 languageEnglish
JournalI E E E Microwave and Wireless Components Letters
Volume31
Issue number11
Pages (from-to)576-578
ISSN1531-1309
DOIs
Publication statusPublished - 2006

Bibliographical note

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