Photoemission study of iron-based superconductor

The iron-based superconductivity (IBSC) is a great challenge in correlated system. Angle-resolved photoemission spectroscopy (ARPES) provides electronic structure of the IBSCs, the pairing strength, and the order parameter symmetry. Here, we briefly review the recent progress in IBSCs and focus on the results from ARPES. The ARPES study shows the electronic structure of "122", "111", "11", and "122 " families of IBSCs. It has been agreed that the IBSCs are unconventional superconductors in strong coupling region. The order parameter symmetry basically follows s ± form with considerable out-of-plane contribution.     

关于4G移动通信技术的相关研究

4G移动通信技术是继3G通信技术后的又一次无线通信技术演进,与传统无线通信技术相比,4G移动通信技术具有通信速度快、质量高等优势。文章主要研究4G移动通信技术的网络结构、特点以及在我国发展的现状和未来发展方向。     

5G城堡板子卡机贴技术及其应用

5G AAU等系列产品的主板实现了模块化设计，单张主板需要额外集成4～16张功放模块子卡，极大增加了人工贴装作业量，且贴装精度很难达到要求。自研打造了一套集成化自动贴装系统，实现全系子卡机械臂贴装，消除子卡贴装工序的瓶颈隐患，提升全系城堡单板合格率，并大幅缩减转线时子卡贴装程序的调试时间，降低过程人员投入。经过实际生产测试，生产效率、贴装精度、单板合格率、转线效率均有较大程度的提升。该技术研究与实践取得了较好的结果反馈，证实了技术方向的准确性及技术方案的可靠性。