TY - JOUR

T1 - Free-Space Squeezing Assists Perfectly Matched Layers in Simulations on a Tight Domain

AU - Shyroki,Dzmitry

AU - Ivinskaya,Aliaksandra

AU - Lavrinenko,Andrei

N1 - Copyright: 2010 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

PY - 2010

Y1 - 2010

N2 - To minimize computer memory consumption in the finite-difference modeling, one tends to place computational domain boundaries as close to the simulated object as possible. Unfortunately, this leads to inaccurate solution in the case when evanescent electromagnetic field is expected to spread far outside the object, as in simulations of eigenmodes or scattering at a wavelength comparable to or larger than the object itself. Here, we show how, in addition to applying the perfectly matched layers (PMLs), outer free space can be squeezed to avoid cutting the evanescent field tails by the PMLs or computational domain borders. Adding the squeeze-transform layers to the standard PMLs requires no changes to the finite-difference algorithms.

AB - To minimize computer memory consumption in the finite-difference modeling, one tends to place computational domain boundaries as close to the simulated object as possible. Unfortunately, this leads to inaccurate solution in the case when evanescent electromagnetic field is expected to spread far outside the object, as in simulations of eigenmodes or scattering at a wavelength comparable to or larger than the object itself. Here, we show how, in addition to applying the perfectly matched layers (PMLs), outer free space can be squeezed to avoid cutting the evanescent field tails by the PMLs or computational domain borders. Adding the squeeze-transform layers to the standard PMLs requires no changes to the finite-difference algorithms.

KW - perfectly matched layer (PML)

KW - Coordinate transformation

KW - finite-difference frequency-domain (FDFD) method

U2 - 10.1109/LAWP.2010.2049250

DO - 10.1109/LAWP.2010.2049250

M3 - Journal article

VL - 9

SP - 389

EP - 392

JO - I E E E Antennas and Wireless Propagation Letters

T2 - I E E E Antennas and Wireless Propagation Letters

JF - I E E E Antennas and Wireless Propagation Letters

SN - 1536-1225

ER -