开槽结构中串扰的网络分析方法与低成本噪声抑制

doi:10.3969/j.issn.1001-2400.2013.01.007

J4 ›› 2013, Vol. 40 ›› Issue (1): 36-43.doi: 10.3969/j.issn.1001-2400.2013.01.007

开槽结构中串扰的网络分析方法与低成本噪声抑制

申振宁^1,2;庄奕琪¹;曾志斌¹

(1. 西安电子科技大学微电子学院，陕西西安 710071；
2. 武警工程大学通信工程系，陕西西安 710086)

收稿日期:2011-09-14 出版日期:2013-02-20 发布日期:2013-03-28
通讯作者: 申振宁
作者简介:申振宁(1976-)，男，西安电子科技大学博士研究生，E-mail: zhenningshen@hotmail.com．
基金资助:
国家自然科学基金资助项目(61076101)；武警工程学院基础研究基金资助项目(WJY-201022)；中央高校基本科研业务费专项资金资助项目(k50511250007)

Crosstalk network analysis in the presence of slots in the return path plane and low-cost noise reduction method

SHEN Zhenning^1,2;ZHUANG Yiqi¹;ZENG Zhibin¹

(1. School of Microelectronic, Xidian Univ., Xi'an 710071， China;
2. Dept. of Communication, Eng. College of CAPF, Xi'an 710086， China)

Received:2011-09-14 Online:2013-02-20 Published:2013-03-28
Contact: SHEN Zhenning

摘要/Abstract

摘要：

提出一种可快速计算开槽结构中串扰特性的网络分析方法，该方法将返回平面开槽描述为槽线模式与微带线模式的相互耦合，进而将电路板结构分解为通过理想变压器连接的槽线结构和微带线结构模型．根据模型的级联特点，使用四端口传输矩阵进行分析．与全波仿真相比，此方法在保证准确度的前提下，可将分析时间从60min降低至30s．使用跨接于开槽两端的短路线来旁路槽线模式电磁场，从而改善传输特性，抑制串扰．仿真和实验测试表明，该方法可将近端串扰减小25dB，将远端串扰减小20dB．与传统的添加去耦电容方法相比，具有带宽大、布线方便、成本低等优点．

关键词: 电磁兼容, 返回平面不理想, 串扰, 传输矩阵

Abstract:

A new network model is proposed for efficient analysis of crosstalk when tracing the cross split return path plane. The influence of the non-ideal return path plane is described as coupling between slot line mode and microstrip line mode, and then circuit structure is decomposed into the slot transmission line and microstrip transmission line which are connected by an ideal transformer. According to the characteristic of the cascaded network, the transmission matrix for the 4-port network is selected to calculate crosstalk. Comparing with full wave simulation, the analysis time is reduced from 60min to 30s with considerable accuracy. The shorting lines which cross the slot in the return path plane are used to bypass the slot line mode in order to improve transfer performance and suppress crosstalk. Simulation results and experiment test show that the near end crosstalk and far end crosstalk are decreased by about 25dB and 20dB, respectively. Compared with the traditional decouple capacitor method, the shorting line proposed in this paper has benefits of wide bandwidth, easy layout and low cost.

Key words: electromagnetic compatibility, non-ideal return path plane, crosstalk, transmission matrix

中图分类号:

TP302.1

申振宁;庄奕琪;曾志斌. 开槽结构中串扰的网络分析方法与低成本噪声抑制[J]. J4, 2013, 40(1): 36-43.

SHEN Zhenning;ZHUANG Yiqi;ZENG Zhibin. Crosstalk network analysis in the presence of slots in the return path plane and low-cost noise reduction method[J]. J4, 2013, 40(1): 36-43.

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开槽结构中串扰的网络分析方法与低成本噪声抑制

Crosstalk network analysis in the presence of slots in the return path plane and low-cost noise reduction method

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