FVTD Characterization of Substrate Effects for Archimedean Spiral Antennas in Planar and Conformal Configurations
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FVTD Characterization of Substrate Effects for Archimedean Spiral Antennas in Planar and Conformal Configurations摘要
This paper describes the application of the
Finite-Volume Time-Domain (FVTD) method to characterize
the influence of the substrate on Archimedean spiral antennas.
The unstructured mesh of the FVTD method permits to model
precisely the fine spiral structure and the thin underlying
substrate. Time-domain numerical results permit to demonstrate
how the substrate affects the distribution of currents propagating
on the metallic spiral arms. The substrate influence in the active
region of the spiral is described through an effective permittivity
which can be related to the transverse mode distribution on the
arm of the spiral. Application of the FVTD method to conformal
spiral geometries is also suggested in three examples
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参考
J.J. van Tonder, J.H. Cloete, “A study of an Archimedes
spiral antenna”, IEEE Antennas and Propagat. Society
Int. Symp. Dig., AP-S vol. 2, pp. 1302 – 1305, June 1994.
H. Nakano, K. Nogami, S. Arai, H. Mimaki, J. Yamauchi,
“A spiral antenna backed by a conducting plane
reflector”, IEEE Trans. Antennas Propagat., vol. AP-34,
pp. 1417-1423, June 1986.
M.N. Afsar, Y. Wang, R. Cheung, “Analysis and
measurement of a broadband spiral antenna”, IEEE
Antennas Propagat. Mag., vol. 46, pp. 59-64, Feb. 2004.
C.W. Penney, R.J. Luebbers, “Input impedance, radiation
pattern, and radar cross section of spiral antennas using
FDTD”, IEEE Trans. Antennas Propagat., vol. AP-42,
pp. 1328 -1332, Sept. 1994.
H. Nakano, M. Ikeda, K. Hitosugi, J. Yamauchi, “A spiral
antenna sandwiched by dielectric layers”, IEEE Trans.
Antennas Propagat., vol. AP-34, pp. 791-796, June 2004.
D.S. Filipović, J.L Volakis, “Novel slot spiral antenna
designs for dual-band/multiband operation”, IEEE Trans.
Antennas Propagat., vol. AP-51, pp. 430-440, March
N.K. Madsen, R.W. Ziolkowski, “A three-dimensional
modified finite volume technique for Maxwell's
equations”, Electromagnetics, vol. 10, pp. 147-161, 1990.
V. Shankar, A.H. Mohammadian, W.F. Hall, “A time-
domain, finite-volume treatment for the Maxwell
equations”, Electromagnetics, vol. 10, pp. 127-145, 1990.
P. Bonnet, X. Ferrieres, B.L. Michielsen, P. Klotz, J.L.
Roumiguières, “Finite-Volume Time Domain Method”,
Chapter 9 in Time domain electromagnetics, edited by
S.M. Rao, Academic Press, San Diego, 1999.
C. Fumeaux, D. Baumann, P. Leuchtmann, R. Vahldieck,
“A generalized local time-step scheme for efficient FVTD
simulations in strongly inhomogeneous meshes”, IEEE
Trans. Microwave Theory Tech. MTT-52(3), pp. 1067-
, 2004.
D. Baumann, C. Fumeaux, P. Leuchtmann, R. Vahldieck,
“Generalized-scattering-matrix extraction using the finite-
volume time-domain (FVTD) method”, IEEE MTT-S Int.
Microwave Symp. Dig., pp. 1701-1704, June 2004.
B.C. Wadell, “Transmission Line Design Handbook”,
Artech House, Boston (1991).
