Improvement of Transmission Line Matrix Method Algorithm Frequency Response Based on Modification of Cell Impedance
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Improvement of Transmission Line Matrix Method Algorithm Frequency Response Based on Modification of Cell Impedance摘要
In this paper, an accurate and numerically robust singularity correction technique for the transmission line matrix method (TLM) algorithm is proposed. The impedance of the adjacent cells to the singularity is corrected by a scalar correction factor, which amounts to a quasi-static correction of the electric and magnetic energy stored in the TLM cells at the singularity. The effectiveness of this method in accurate modeling of structures with metallic strips (sharp edges) and 90 degree edge corners has been clearly validated against published measurement and common TLM simulation data.
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参考
J. Hesselbarth and R. Vahldieck, “Resonance
Frequencies Calculated Efficiently with the
Frequency-Domain TLM Method,” IEEE
MWCL, vol. 13, no. 5, pp. 190-192, May
J. A. Morente, J. A. Porti, H. Magan, and O.
Torres, “Improved Modeling of Sharp
Zones in Resonant Problems with the TLM
method,” Applied Computational
2 4 6 8 10 12 14 16 18
-70
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-20
-10
Frequency(GHz)
S 21 (dB)
Uncorrected
Corrected
Measurement
2 4 6 8 10 12 14 16 18
-60
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Frequency(GHz)
S21
(dB)
Measurement
CST
Corrected TLM
RAJABI, KOMJANI: IMPROVEMENT OF TRANSMISSION LINE MATRIX METHOD FREQUENCY RESPONSE
Electromagnetic Society (ACES) Journal, vol.
, no. 2, pp. 67-71, July 1999.
J. L. Herring and C. Christopolous, “Multigrid
Transmission-Line Modeling Method for
Solving Electromagnetic Field Problems,”
Electronics Letters, vol. 27, no. 20, pp. 1794-
, Sep. 1991.
R. E. Collin, Field Theory of Guided Waves,
nd edition, IEEE Press., New York, 1991.
U. Pekel and R. Mittra, “A Finite-Element-
Method Frequency-Domain Application of the
Perfectly Matched Layer (PML) Concept,”
Microwave and Opt. Tech. Lett., vol. 9, no. 3,
K. R. Umashankar, and A. Taflove, “A Novel
Method to Analyze Electromagnetic
Scattering of Complex Objects,” IEEE Trans.
Electromagn. Compat. , vol. 24, pp. 392-405,
Nov. 1982.
C. J. Railton, “The Inclusion of Fringing
Capacitance and Inductance in FDTD for the
Robust Accurate Treatment of Material
Discontinuities,” IEEE MTT-S International
Microwave Symposium Digest , pp. 391-394,
P. Sewell, J. Wykes, A. Vukovic, D. W. P.
Thomas, T. M. Benson, and C. Christopolous,
“Multi-Grid Interface in Computational
Electromagnetics,” Electronics Letters, vol.
, pp. 162-163, Feb. 2004.
J. P. Berenger, “A Perfectly Matched Layer
for the Absorption of Electromagnetic
Waves,” Journal of Computational Physics,
vol. 114, no. 185, 1994.
C. Huber, M. Krumpholz, and P. Russer,
“Dispersion in Anisotropic Media Modeled by
Three-Dimensional TLM,” IEEE Transactions
on Microwave Theory and Techniques, vol.
, no. 8, pp.1923-1934, August 1995.
D. M. Sheen, S. M. Ali, and J. A. Kong,
“Application of the Three-Dimensional Finite-
Difference Time-Domain Method to the
Analysis of Planar Microstrip Circuits,” IEEE
Transactions on Microwave Theory and
Techniques, vol. MTT-38, no. 7, pp. 849-857,
July 1990.
T. Shibata, T. Hayashi, and T. Kimura,
“Analysis of Microstrip Circuits using Three
Dimensional Full Wave Electromagnetic Field
Analysis in the Time Domain,” IEEE
Transactions on Microwave Theory and
Techniques, vol. MTT-36, no. 6, pp. 1064-
, June 1998.
