Hybrid computational scheme for antenna human body interaction
A new hybrid method of moments (MoM)/finite-difference timsdomain (FDTD), with a sub-gridded finite-difference timedomain (SGFDTD) approach is presented. The method overcomes the drawbacks of homogeneous MOM and FDTD simulations, and so permits accurate analysis of realistic applications. As a demon...
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| Format: | Article |
| Published: |
PIER
2013
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| Online Access: | http://www.jpier.org/PIER/pier.php?paper=12082209 http://www.jpier.org/PIER/pier.php?paper=12082209 http://eprints.uthm.edu.my/4018/4/khairun_nidzam_ramli.pdf |
| Summary: | A new hybrid method of moments (MoM)/finite-difference
timsdomain (FDTD), with a sub-gridded finite-difference timedomain
(SGFDTD) approach is presented. The method overcomes
the drawbacks of homogeneous MOM and FDTD simulations, and so
permits accurate analysis of realistic applications. As a demonstration,
it is applied to the short-range interaction between an inhomogeneous
human body and a small UHF WID antenna tag, operating at,
900MHz. Near-field and far-field performance for the antenna are
assessed for different placements over the body. The cumulativt.
distribution function of the radiation efficiency and the absorbed power
are presented and analyzed. The algorithm has a fivefold speed
advantage over fine-gridded FDTD. |
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