Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to the nature of the substrate material. This needs to be considered as a layered structure of epoxy resinand glass fibre. Calculations, using Boundary Element field methods, show that the distribution of the electricfield within this layered structure determines the apparent dielectric constant and therefore affects theimpedance. Thus FR4 cannot be considered to be uniform dielectric when calculating differential impedance.
上传时间: 2014-12-24
上传用户:DE2542
Calculation of the Differential Impedance of Tracks on FR4 substrates There is a discrepancy between calculated and measured values of impedance for differential transmission lineson FR4. This is especially noticeable in the case of surface microstrip configurations. The anomaly is shown tobe due to the nature of the substrate material. This needs to be considered as a layered structure of epoxy resinand glass fibre. Calculations, using Boundary Element field methods, show that the distribution of the electricfield within this layered structure determines the apparent dielectric constant and therefore affects theimpedance. Thus FR4 cannot be considered to be uniform dielectric when calculating differential impedance.
上传时间: 2013-10-18
上传用户:masochism
常用PCB基材性能分析
上传时间: 2013-11-15
上传用户:冇尾飞铊
常用PCB基材性能分析
上传时间: 2013-11-08
上传用户:epson850
VIP专区-PCB源码精选合集系列(15)资源包含以下内容:1. pc6-protel99yjkxz.2. Keil软件使用教程.3. 电源之PCB布线设计.4. [高速PCB基础理论及内存仿真技术].佚名.文字版.5. 常用PCB基材性能分析-FR4.6. Altium Designer常用快捷键汇总.7. 如何在ad6中打印PCB的布线层和丝印层.8. PADS BlazeRouter功能简介之交互式高速PCB设计.9. 数显式测量电路PCB图.10. 60分钟学会OrCAD中文教程.11. Altium_Designer区域_ROOM_规则使用方法.12. Polar SI9000.13. AD6 PCB设计.14. 基于PROTEUS设计制作印刷电路板.15. SDRAM与DDR布线指南.16. Altium Designer PCB封装库.17. Allegro16.2中英文菜单.18. PCBA工艺评审(2011-8-17).19. PCB设计铜铂厚度与线宽和电流以及温升的关系.20. si8000教程.21. 于博士_60分钟学会orCAD.22. Allegro_SPB_16-3速成教材.23. pcb板制造所需雕刻机软件.24. 华为的经典PCB教程.25. 机架式8路OTDR MB—V1.0器件焊接清单.26. 常用的焊盘尺寸.27. 抄板软件_QuickPcb2006_(加密狗版)_已破解.28. 高速PCB设计常见问题.29. 电容在EMC设计中的重要性.30. PCB元件库全面.31. PCB电路图设计问题.32. 几种ESD防护设计.33. protel99元件对照表.34. DXP使用技巧.35. altium_designer10.0入门.36. OrCAD Capture CIS 9学习教材.37. pcb布局.38. 波峰焊和回流焊的区别.39. 贴片元件焊盘尺寸规范.40. 单管放大_从原理图到PCB.
上传时间: 2013-04-15
上传用户:eeworm
VIP专区-PCB源码精选合集系列(24)资源包含以下内容:1. 多层印制板设计基本要领.2. 印刷电路板的过孔设置原则.3. 高速电路传输线效应分析与处理.4. 混合信号PCB设计中单点接地技术的研究.5. 高性能PCB设计的工程实现.6. 高性能覆铜板的发展趋势及对环氧树脂性能的新需求.7. 如何快速创建开关电源的PCB版图设计.8. 数字与模拟电路设计技巧.9. 探索双层板布线技艺.10. 通孔插装PCB的可制造性设计.11. 用单层PCB设计超低成本混合调谐器.12. 怎样才能算是设计优秀的PCB文件?.13. PCB设计的可制造性.14. LVDS与高速PCB设计.15. pspice使用教程.16. 传输线.17. Pspice教程(基础篇).18. powerpcb(pads)怎么布蛇形线及走蛇形线.19. DRAM内存模块的设计技术.20. PCB被动组件的隐藏特性解析.21. 数字地模拟地的布线规则.22. 信号完整性知识基础(pdf).23. 差分阻抗.24. pcb layout design(台湾硬件工程师15年经验.25. PCB设计经典资料.26. 高速PCB基础理论及内存仿真技术(经典推荐).27. pcb layout规则.28. ESD保护技术白皮书.29. SM320 PCB LAYOUT GUIDELINES.30. HyperLynx仿真软件在主板设计中的应用.31. pcb布线经验精华.32. 计算FR4上的差分阻抗(PDF).33. Hyperlynx仿真应用:阻抗匹配.34. PCB布线原则.35. 高速PCB设计指南.36. 电路板布局原则.37. 磁芯电感器的谐波失真分析.38. EMI设计原则.39. 印刷电路板设计原则.40. PCB设计问题集锦.
上传时间: 2013-07-16
上传用户:eeworm