Modeling, Verification, and Signal Integrity Analysis of High-Speed Signaling Channel with Tabbed Routing in High Performance Computing Server Board
Modeling, Verification, and Signal Integrity Analysis of High-Speed Signaling Channel with Tabbed Routing in High Performance Computing Server Board
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DOI：
10.3390/electronics10131590
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发表时间：
2021-07-01
期刊：
影响因子：
2.9
通讯作者：
Ahn, Seungyoung
中科院分区：
文献类型：
--
作者：
Song, Kyunghwan;Kim, Jongwook;Ahn, Seungyoung
在高速信令信道中，降低串扰噪声是非常必要的。在通道布线区域中，使用双端布线图案来减轻远端串扰（FEXT），并且使用时域反射计（TDR）和时域传输（TDT）来控制电长度。然而，与具有均匀宽度和间距的传统通道不同，互连布线的宽度和间距逐段变化，并且互连布线的电容和电感值也变化。本文提出了一种基于分段法的互连布线等效电路建模方法。所提出的模型进行了验证，使用三维电磁仿真和测量结果在频域中。基于计算出的电感和电容参数，我们分析了插入损耗，FEXT，和自阻抗在频域中，TDT和FEXT在时域中，通过比较这些指标的值与不带布线。使用所提出的互连布线模型，我们分析了互连布线与设计参数的变化的基础上的自和互电容和电感。
It is necessary to reduce the crosstalk noise in high-speed signaling channels. In the channel routing area, the tabbed routing pattern is used to mitigate far-end crosstalk (FEXT), and the electrical length is controlled with a time domain reflectometer (TDR) and time domain transmission (TDT). However, unlike traditional channels having uniform width and space, the width and space of tabbed routing changes by segment, and the capacitance and inductance values of tabbed routing also change. In this paper, we propose a tabbed routing equivalent circuit modeling method using the segmentation approach. The proposed model was verified using 3D EM simulation and measurement results in the frequency domain. Based on the calculated inductance and capacitance parameters, we analyzed the insertion loss, FEXT, and self-impedance in the frequency domain, and TDT and FEXT in the time domain, by comparing the values of these metrics with and without tabbed routing. Using the proposed tabbed routing model, we analyzed tabbed routing with variations of design parameters based on self- and mutual-capacitance and inductance.