导电圆锥边界电磁散射问题

导电圆锥边界电磁散射问题 THE PROBLEM OF ELECTROMAGNETIC SCATTERING FROM A CONDUCTING CONICAL BOUNDARY 柯亨玉 Ke Hengyu Lu Shu first-author 鲁述 本文利用并矢格林函数方法导出导电圆锥外任一矢径为r 处 电（磁）振子的辐射场,当振子在圆锥表面时,其结果与鲁述的结果相同。将振子辐射场公式外推r 0 →∞,导出了平面电磁波激励下散射场一般解。将所得结果应用到沿圆锥轴线负方向入射的特例,与Hansen给出的结果一致。最后还给出了平面电磁波激励下部分散射方向图。 The radiation fields associated with a perfectly conducting cone excited by electric and magnetic "dipoles are given in terms of the dyadic Green’s function - - techinquc at first When the dipolesplaced on the - - cone surface, the results of radiation agree with Lu’s conclusion. The scattering fields of plane electromagnetic wave at arbirtary direction incidence to the cone are derived as the special case of the electric and magnetic dipoles moving to infinite.Then, the general solution of scattering problem involviug conducting conical boundary is obtained.When a plane wave incidence to the cone along the minus direction of the axis, the scattering field formulae agree-with the - - results given in J.R.Mentzer’s book. Finally, some scattering patterns are given, 导电圆锥 电磁散射 圆锥矢量波函数 并矢格林函数 conducting cone electromagnetic Iscattering conical vector wave function dyadic Green’s function 国家自然科学基金(61672102) 1989-01-01 2021-04-01 1