摘要
为了满足服务器PCIe5.0高速要求,安费诺公司推荐一种Riser card的线缆方案,即基于当前的的服务器结构框架,采用线缆的方式解决高速信号的衰减问题。通过目前一系列的仿真和实测,特分享一些PCBA的设计经验,参考此数据,可以避免一些弯路,使得整个链路调试成功的时间大大缩短。本文主要介绍与线缆相关的PCBA设计部分,包含仿真数据、失败的案例数据以及成功的案例数据。仿真数据是基于仿真软件CST所得,实测数据来自VNA的量测。所得出的结论主要是推荐最佳的过孔和焊线焊盘的大小、间距尺寸[1]。
In order to facilitate the high-speed request of PCIe5.0 of server,amphenol propose a new design solution,named cable solution of Riser card.This solution is based on current structure of server,and chooses cable to run high speed signal instead of PCB trace,that will improve insertion loss much to satisfy PCIe5.0 standard.This sharing is main for PCBA design which contains vias OD,soldering pads dimension and gap,which is high-impact to cable soldering.And all the data is from CST for simulation and VNA for measured data.
作者
周敏杰
ZHOU Minjie(Amphenol AssembleTech(Xiamen)Co.,Ltd.,Xiamen Fujian 361009)
出处
《中国科技纵横》
2022年第9期55-57,70,共4页
China Science & Technology Overview
