GTD Analysis of the Radiation Pattern of a Shaped Subre-flector with a Conical Flange

Zhang Yi-feng

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GTD Analysis of the Radiation Pattern of a Shaped Subre-flector with a Conical Flange

更新时间：2025-12-08

- GTD Analysis of the Radiation Pattern of a Shaped Subre-flector with a Conical Flange
- Acta Electronica Sinica Issue 3, Pages: 94-98(1985)
- 作者机构：
  
  西北电子设备研究所
- 作者简介：
- 基金信息：
- DOI：
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- Published：1985
- 稿件说明：
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[1]张益凤.装有圆锥法兰的成形副反射器的散射场GTD的分析[J].电子学报,1985(03):94-98.

Zhang Yi-feng. GTD Analysis of the Radiation Pattern of a Shaped Subre-flector with a Conical Flange[J]. Acta Electronica Sinica, 1985, (3): 94-98.
[1]张益凤.装有圆锥法兰的成形副反射器的散射场GTD的分析[J].电子学报,1985(03):94-98. DOI：

Zhang Yi-feng. GTD Analysis of the Radiation Pattern of a Shaped Subre-flector with a Conical Flange[J]. Acta Electronica Sinica, 1985, (3): 94-98. DOI：

摘要

本文介绍了一种初级馈源放在散焦区和装有圆锥法兰的成形副反射器主平面的散射方向图的几何绕射理论的分析。文中除了考虑成形副反射器和圆锥法兰的几何光学场外

还考虑了成形副反射器和圆锥法兰之间形成的劈的绕射

以及法兰盘边缘的绕射。计算和实验结果的一致性良好。

Abstract

The geometrical theory of diffraction （GTD） is used to analyse the principal plane far-field radiation patterns of a shaped subreflector with a conical flange attachment fed by primary feed located at its caustic region. The nonaxial diffraction field and the diffraction field in its axial caustic region are evaluated. In addition to the geometrical optics field from the shaped subreflector and its flange

the diffractions from the wedge formed between the shaped subreflector and the conical flange as well as that of the flange edge are considered. The principal radius of the curvature of the subreflector surface is determined. The computational results show good agreement with experiments.

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