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Volume 21 Issue 2
Mar.  1999
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Xu Jianhua, Yang Ziqiang. SERIES SOLUTION OF THE ELECTROMAGNETIC FIELD EXCITED BY AN OFF-AXIS DIPOLE IN CIRCULARLY MULTILAYERED MEDIUM[J]. Journal of Electronics & Information Technology, 1999, 21(2): 238-245.
Citation: Xu Jianhua, Yang Ziqiang. SERIES SOLUTION OF THE ELECTROMAGNETIC FIELD EXCITED BY AN OFF-AXIS DIPOLE IN CIRCULARLY MULTILAYERED MEDIUM[J]. Journal of Electronics & Information Technology, 1999, 21(2): 238-245.

SERIES SOLUTION OF THE ELECTROMAGNETIC FIELD EXCITED BY AN OFF-AXIS DIPOLE IN CIRCULARLY MULTILAYERED MEDIUM

  • Received Date: 1997-08-22
  • Rev Recd Date: 1998-02-22
  • Publish Date: 1999-03-19
  • When a dipole source(electric dipole or magnetic dipole) is located at arbitrary point in circularly multilayered conductive medium,the electromagnetic fields excited by the source contain both TE and TM waves.The series solutions of the fields in very layer are derived analytically in this paper.A coefficient recurrence matrix is established by means of the boundary conditions.In such way,the expressions of fields can be degermined definitely.As a numerical example,a group of response curves of an off-axis source are given finally.
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  • Gianzero S, Anderson B. Mathematical theory for the fields due to a finite a. c. coil in an infinite thick bed with an arbitrary number of co-axial layers. The Log Analyst, 1984, 25(2): 25-32.[2]Wait J R. General formulation of the induction logging problem for concentric layers about the borehoke. IEEE Trans. on Geoscience and Remote Sensing, 1984, GR-22(3): 34-42.[3]Chew W C. Waves and Fields in Inhomogeneous Media. Nen York: Van Nostrand Reinhokd 1990, 70-79.[4]徐建华编著.层状媒质中的电磁场与电磁波.北京:石油工业出版社,1997, 96-126.[5]张善杰,唐汉.任意实数阶复宗量第一类和第二类Bessel函数的精确解.电子学报,1996, 24(3): 77-81.
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