A New Method of Calculating the Characteristic Impedance of Rectangular Line with Circular Inner Conductor

Du Jianhong

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A New Method of Calculating the Characteristic Impedance of Rectangular Line with Circular Inner Conductor

更新时间：2025-12-08

- A New Method of Calculating the Characteristic Impedance of Rectangular Line with Circular Inner Conductor
- Acta Electronica Sinica Issue 12, Pages: 23-29(1993)
- 作者机构：
  
  中山大学无线电电子学系,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1993
- 稿件说明：
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[1]杜建洪.一种计算具有内圆柱导体矩形线特性阻抗的新方法[J].电子学报,1993(12):23-29.

Du Jianhong. A New Method of Calculating the Characteristic Impedance of Rectangular Line with Circular Inner Conductor[J]. Acta Electronica Sinica, 1993, (12): 23-29.
[1]杜建洪.一种计算具有内圆柱导体矩形线特性阻抗的新方法[J].电子学报,1993(12):23-29. DOI：

Du Jianhong. A New Method of Calculating the Characteristic Impedance of Rectangular Line with Circular Inner Conductor[J]. Acta Electronica Sinica, 1993, (12): 23-29. DOI：

摘要

本文采用保角变换技术

将内外接多边形柱取代内圆导体

得到的传输线特性阻抗作为真值的上、下限

并研究了其相对偏差情况

从而得到了计算具有内圆导体矩形线特性阻抗的一种新方法

所得结果与文献的数据吻合良好

最大偏差<0.5％.

Abstract

In this paper

by replacing the circular inner conductor respectively with inner and outer closed polygon（N = 8）conductors

we obtain their characteristic impedances Zcin

Zcout

as the upper and lower limits of the real value Zc（Zcin>Zc>Zcout）by means of conformal mapping technology. The study of their relative deviations is made and then we get a new method of calculating Zc. The maximum relative error of results obtained by this method to the ones given in [4]

[7] is less than 0. 5%.

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