提出了一种带状线组件与射频连接器的键合过渡结构,采用地-信号-地(ground signal ground,GSG)键合方式以及板内垂直互连成功实现了带状线与射频连接器的过渡,同时对此过渡结构尤其是射频连接器键合台面的特性阻抗进行了理论研究,并采...提出了一种带状线组件与射频连接器的键合过渡结构,采用地-信号-地(ground signal ground,GSG)键合方式以及板内垂直互连成功实现了带状线与射频连接器的过渡,同时对此过渡结构尤其是射频连接器键合台面的特性阻抗进行了理论研究,并采用类比法给出了其特性阻抗公式.为了验证研究结论,对此过渡结构的背靠背形式以及射频连接器进行了加工、测试.测试结果表明,在0.5~40 GHz频带内,该过渡结构具有良好的驻波以及传输特性.展开更多
全球离散格网(Discrete Global Grid,DGG)模型是数字地球及空间信息格网的基础,不同的建模方法不但影响空间数据的存储和管理效率,而且影响全球GIS的操作功能。该文介绍了DGG的评价标准,将DGG的建模方法归纳为3种类型:经纬度格网模型、...全球离散格网(Discrete Global Grid,DGG)模型是数字地球及空间信息格网的基础,不同的建模方法不但影响空间数据的存储和管理效率,而且影响全球GIS的操作功能。该文介绍了DGG的评价标准,将DGG的建模方法归纳为3种类型:经纬度格网模型、自适应格网模型和正多面体格网模型,重点分析了不同类型球面离散格网模型的几何结构、单元特征和应用模式。最后,提出了DGG在Global GIS中亟待解决的基本问题,包括编码、精度、应用、误差、整合和定位问题。展开更多
A fully automatic setup for on-wafer contact probing will be presented. This setup consists of six automatable nano positioning axes used as tool holder and a sample holder. With this setup a fully automatic one-port ...A fully automatic setup for on-wafer contact probing will be presented. This setup consists of six automatable nano positioning axes used as tool holder and a sample holder. With this setup a fully automatic one-port SOL calibration for a Vector Network Analyzer is done. Furthermore a fully automated on-wafer contact probing is performed. Afterwards, the effects of a misalignment of the three tips of a GSG-probe are examined. Additionally the error on the calibration is calculated to determine its effect on the measurement. The results show, that a misalignment of the probe has a high impact on the measurement of the VNA. Hence a fully automated on-wafer probing presented in this paper is a good way to detect these misalignments and correct them if necessary.展开更多
文摘提出了一种带状线组件与射频连接器的键合过渡结构,采用地-信号-地(ground signal ground,GSG)键合方式以及板内垂直互连成功实现了带状线与射频连接器的过渡,同时对此过渡结构尤其是射频连接器键合台面的特性阻抗进行了理论研究,并采用类比法给出了其特性阻抗公式.为了验证研究结论,对此过渡结构的背靠背形式以及射频连接器进行了加工、测试.测试结果表明,在0.5~40 GHz频带内,该过渡结构具有良好的驻波以及传输特性.
文摘全球离散格网(Discrete Global Grid,DGG)模型是数字地球及空间信息格网的基础,不同的建模方法不但影响空间数据的存储和管理效率,而且影响全球GIS的操作功能。该文介绍了DGG的评价标准,将DGG的建模方法归纳为3种类型:经纬度格网模型、自适应格网模型和正多面体格网模型,重点分析了不同类型球面离散格网模型的几何结构、单元特征和应用模式。最后,提出了DGG在Global GIS中亟待解决的基本问题,包括编码、精度、应用、误差、整合和定位问题。
文摘A fully automatic setup for on-wafer contact probing will be presented. This setup consists of six automatable nano positioning axes used as tool holder and a sample holder. With this setup a fully automatic one-port SOL calibration for a Vector Network Analyzer is done. Furthermore a fully automated on-wafer contact probing is performed. Afterwards, the effects of a misalignment of the three tips of a GSG-probe are examined. Additionally the error on the calibration is calculated to determine its effect on the measurement. The results show, that a misalignment of the probe has a high impact on the measurement of the VNA. Hence a fully automated on-wafer probing presented in this paper is a good way to detect these misalignments and correct them if necessary.
