GHz twisted differential line structure on printed circuit board to minimize EMI and crosstalk noises

52nd Electronic Components and Technology Conference 2002. (Cat. No.02CH37345) Pub Date : 2002-08-07 DOI:10.1109/ECTC.2002.1008233

D. Kam, Heeseok Lee, Seungyong Baek, Bongcheol Park, Joungho Kim

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引用次数: 11

Abstract

The concept of twisted pair on the cable interconnection can be readily applied to the differential lines on printed circuit board (PCB), which enables enhanced immunity against crosstalk and radiated emission. In this paper, twisted differential line (TDL) is implemented on PCB and fully characterized. First, the transmission characteristics of TDL including propagation constant and differential impedance are extracted by using 3D full-wave analysis. The potential of TDL for the transmission of over GHz signal and enhanced immunity against crosstalk and radiated emission is clearly shown. Second, the measurement results reconfirm TDL's capability as a good transmission line structure over several GHz. Also, it is modeled by a simple equivalent circuit, based on measurement results. Third, the enhanced immunity of TDL against crosstalk and radiated emission is clearly demonstrated by measurement results. TDL is compared with other transmission line structures showing its superiority. Finally, several ideas to improve TDL's performance are suggested and verified to be useful.

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印刷电路板上的GHz扭曲差分线结构，以减少EMI和串扰噪声

电缆互连中的双绞线概念可以很容易地应用于印刷电路板(PCB)上的差分线，从而增强对串扰和辐射发射的抗扰能力。本文在PCB上实现了扭曲差分线(TDL)，并对其进行了充分的表征。首先，利用三维全波分析方法提取TDL的传输特性，包括传播常数和差分阻抗;TDL在传输超GHz信号和增强抗串扰和辐射发射方面的潜力被清楚地显示出来。其次，测量结果再次证实了TDL作为几GHz范围内良好的传输线结构的能力。根据测量结果，建立了简单的等效电路模型。第三，测量结果清楚地证明了TDL对串扰和辐射发射的抗扰性增强。通过与其他传输线结构的比较，显示了TDL的优越性。最后，提出了一些改进TDL性能的思路，并验证了这些思路的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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52nd Electronic Components and Technology Conference 2002. (Cat. No.02CH37345)

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