Evaluation of the propagation constants of differential PCB interconnections

2007 IEEE Workshop on Signal Propagation on Interconnects Pub Date : 2007-05-13 DOI:10.1109/SPI.2007.4512251

V. Ricchiuti, A. Orlandi, G. Antonini

引用次数: 1

Abstract

Today the telecommunication equipments are characterized by transmission bandwidths of tents of GHz. Consequently the digital signals into play reach data rates of some Gbps with rise/fall times of few picoseconds. In this context it is important to correctly characterize the transmission lines on boards for studying the signal propagation as a function of the frequency. The more effective technique starts from measurements, connecting the studied traces to the measurement instruments by means of transition networks or fixtures. But in this case the connective errors due to the connector mismatches and discontinuities have to be removed. The paper proposes different mathematical de- embedding procedures to evaluate the propagation constant of differential traces, de-embedded by the effects of the SMA's connecting them to the VNA.

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差分PCB互连传播常数的评估

今天的电信设备的特点是传输带宽在千兆赫以内。因此，发挥的数字信号达到几Gbps的数据速率，上升/下降时间为几皮秒。在这种情况下，为了研究信号传播作为频率的函数，正确表征电路板上的传输线是很重要的。更有效的技术是从测量开始，通过过渡网络或夹具将研究的轨迹连接到测量仪器上。但是在这种情况下，由于连接器不匹配和不连续性导致的连接错误必须被删除。本文提出了不同的数学解嵌入方法来计算差分走线的传播常数，通过连接到VNA的SMA来解嵌入。

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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2007 IEEE Workshop on Signal Propagation on Interconnects

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