Frequency Domain Analysis for Right Angle Corners

路宏敏; 安晋元; 赵益民; 朱满座

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Frequency Domain Analysis for Right Angle Corners

更新时间：2025-12-08

- Frequency Domain Analysis for Right Angle Corners
- Vol. 41, Issue 12, Pages: 1451-1454(2007)
- 作者机构：
  
  西安电子科技大学电子工程学院,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN41;TN81
- Online First：10 December 2007，
  
  Published：2007
- 稿件说明：
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路宏敏, 安晋元, 赵益民, et al. Frequency Domain Analysis for Right Angle Corners[J]. 2007, 41(12): 1451-1454.
DOI：

路宏敏, 安晋元, 赵益民, et al. Frequency Domain Analysis for Right Angle Corners[J]. 2007, 41(12): 1451-1454. DOI：

摘要

分析了印制线直角拐角特性阻抗的不连续性及其对传输特性的影响

提出一种设计印制线拐角的新方法.基于时域有限差分法

研究了4种常见印刷电路板(PCB)印制线直角拐角的传输特性和反射特性.结果表明:印制线直角拐角传输特性改善的次序依次为直角拐角、圆拐角、内外斜切45°拐角和外斜切45°拐角

最佳拐角为45°外斜切直角弯曲; 印制线拐角特性阻抗与其外斜切45°直角拐角最佳斜切率有依赖关系; 对于标称特性阻抗50 Ω的微带线

在小于8 GHz的频率范围内

其外斜切45°直角拐角的最佳斜切率约为0.535.

Abstract

The characteristic impendence discontinuities of the right angle corners on printed circuit board traces were analyzed

along with their effect on transmission characteristics

and a novel method for designing the trace corner is given. Based on the finite difference time domain method

the reflection and transmission characteristics of the four common types of right angle corner were investigated numerically. The simulated results confirm that the degree of improvement on transmission characteristics is right angle corner

round corner

45° inner and out miter

and 45° out miter in-order

the optimal corner shape is a 45° out miter. Further

there is a relation between the characteristic impendence and the optimal miter ratio for a 45° out miter corner and for lines of nominally 50 Ω characteristic impendence

this miter ratio is about 0.535 over a broad frequency range lower than 8 GHz.

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references

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