排序方式: 共有13条查询结果,搜索用时 15 毫秒
1.
The Fabry-Perot resonator (FPR) antenna has found wide applications in microwave and millimeter waves and recently attracted considerable interest, in this paper, a summary of planar and cylindrical structures, analytic models and research development is presented, and a comparison between these structures and analytic models is made, showing that such analytic models as the FP cavity mode, electromagnetic band gap (EBG) defect mode, transmission line mode, and leaky-wave mode are consistent when applied to analyze this type of resonator antenna. Some interesting topics under recent research, including dual or multi-band, improvement of gain bandwidth, low profile and beam control, are surveyed. 相似文献
2.
3.
魏恒荣 《温州大学学报(社会科学版)》2005,18(2):22-27
资产管理公司(AMC)可以集中处理银行不良资产,防范金融风险,恢复银行信用;同时我国的AMC还承担着促进国企改革的特殊使命;我国.AMC有其现实市场需求,有长期存在的必要,完全可以办成真正的投资银行。 相似文献
4.
在讨论分析了HSDPA的关键技术——AMC、H-ARQ、FCS的基础上,简介了HSDPA的演进技术HSUPA和HSOPA。可以看出HSDPA技术的运用将使3G移动网络更好的满足用户的需求,同时HSDPA的演进技术HSUPA和HSOPA的发展和运用将更加完善高速分组按入技术,进一步实现5W个人通信。 相似文献
5.
储佳 《内蒙古科技与经济》2009,(24):88-90
文章对WiMAX的OFDM/OFDMA,MIMO,HARQ,AMC等各项关键技术进行了分析,并且对比了802.16d和802.16e标准,为以后WiMAX无线网络规划和优化提供一个理论的指导。 相似文献
6.
MARC AMC与EAD档案著录标准比较研究 总被引:3,自引:0,他引:3
本文分别论述了MARCAMC档案机读目录著录标准与针对档案检索工具的档案置标著录标准EAD的制定与结构等方面的特点 ,在此基础上 ,对二者作了进一步的分析与比较 ,最后得出结论 :以上二者在网络化档案信息的著录与共享利用过程中是互为补充、共同发展的 ,这为我国网络数字化档案信息的著录与检索指明了方向 相似文献
7.
Research progress on Fabry-Perot resonator antenna 总被引:1,自引:0,他引:1
The Fabry-Perot resonator (FPR) antenna has found wide applications in microwave and millimeter waves and recently attracted considerable interest. In this paper, a summary of planar and cylindrical structures, analytic models and research development is presented, and a comparison between these structures and analytic models is made, showing that such analytic models as the FP cavity mode, electromagnetic band gap (EBG) defect mode, transmission line mode, and leaky-wave mode are consistent when applied to analyze this type of resonator antenna. Some interesting topics under recent research, including dual or multi-band, improvement of gain bandwidth, low profile and beam control, are surveyed. 相似文献
8.
9.
陆健 《南通职业大学学报》2011,25(3):80-83
江苏省非理科专业高等数学竞赛是目前我国高职院校高等数学最高级别的竞赛,每两年举办一届,旨在激励大学生学习和运用数学的积极性,推动数学基础课程的教学改革,提高教学质量。文章结合高等数学学习对高职学生综合素质和创新能力培养的特殊功能,对2010年江苏省高等数学竞赛专科试题的结构与考点进行分析,并对典型试题做出解析,以利今后高等数学的教学和学生参赛的辅导。 相似文献
10.