中国物理B ›› 2005, Vol. 14 ›› Issue (11): 2305-2313.doi: 10.1088/1009-1963/14/11/027

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Scattering characteristics of conducting cylinder coated with nonuniform magnetized ferrite

容启宁1, 胡斌杰2, 张军3, ToutainSerge4   

  1. (1)City University of Hong Kong, Kowloon, Hong Kong SAR, China; (2)South China University of Technology, Guangzhou 510640, China; (3)Sun Yat-Sen University, Guangzhou 510275, China; (4)University of Nantes, Nantes 44306, France
  • 收稿日期:2004-12-04 修回日期:2005-06-27 出版日期:2005-11-20 发布日期:2005-11-20
  • 基金资助:
    Project supported by Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20020561024),and Guangzhou Science and Technology Project of China (Grant No 2005J1-C0061).

Scattering characteristics of conducting cylinder coated with nonuniform magnetized ferrite

Hu Bin-Jie (胡斌杰)a, Edward Yung Kai-Ning (容启宁)b, Zhang Jun (张军)c, Toutain Serged   

  1. a South China University of Technology, Guangzhou 510640, China; b City University of Hong Kong, Kowloon, Hong Kong SAR, China; c Sun Yat-Sen University, Guangzhou 510275, China; d University of Nantes, Nantes 44306, France
  • Received:2004-12-04 Revised:2005-06-27 Online:2005-11-20 Published:2005-11-20
  • Supported by:
    Project supported by Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No 20020561024),and Guangzhou Science and Technology Project of China (Grant No 2005J1-C0061).

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摘要： An analytical technique, referred to as the scattering matrix method (SMM), is developed to analyse the scattering of a planar wave from a conducting cylinder coated with nonuniform magnetized ferrite. The SMM solution for the nonuniform ferrite coating can be reduced to the expressions for the scattering and penetrated coefficients in four particular cases: nonuniform magnetized ferrite cylinder, uniform magnetized ferrite-coated conducting cylinder, uniform ferrite cylinder as well as homogeneous dielectric-coated conducting cylinder. The resonant condition for the nonuniform ferrite coating is obtained. The distinctive differences in scattering between the nonuniform ferrite coating and the nonuniform dielectric coating are demonstrated. The effects of applied magnetic fields and wave frequencies on the scattering characteristics for two types of the linear profiles are revealed.

关键词: scattering, inhomogeneous ferrite, conducting cylinder, scattering matrix method

Abstract: An analytical technique, referred to as the scattering matrix method (SMM), is developed to analyse the scattering of a planar wave from a conducting cylinder coated with nonuniform magnetized ferrite. The SMM solution for the nonuniform ferrite coating can be reduced to the expressions for the scattering and penetrated coefficients in four particular cases: nonuniform magnetized ferrite cylinder, uniform magnetized ferrite-coated conducting cylinder, uniform ferrite cylinder as well as homogeneous dielectric-coated conducting cylinder. The resonant condition for the nonuniform ferrite coating is obtained. The distinctive differences in scattering between the nonuniform ferrite coating and the nonuniform dielectric coating are demonstrated. The effects of applied magnetic fields and wave frequencies on the scattering characteristics for two types of the linear profiles are revealed.

Key words: scattering, inhomogeneous ferrite, conducting cylinder, scattering matrix method

中图分类号:  (General theory, scattering mechanisms)

  • 72.20.Dp
02.10.Yn (Matrix theory)