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物电论坛779期-博士生答辩前总结报告

目标电磁散射特性分析及超宽带天线的设计
内容简介:电磁散射一直是一个十分活跃、有着大量实际应用、且为多学科领域共同研究的热门课题。从分子、电子水平上研究不同材料目标的电磁散射,即从电磁波与电子或者电磁极矩的相互作用出发,运用统计学的规律,把微观物理量如电子速度、电偶极子的角速度等过渡到宏观物理量如电流密度,再应用电磁辐射的公式计算散射回波、RCS。这样能够有效地展示电磁散射的整个物理过程和把握RCS的物理意义,对于目标RCS的严格计算、目标探测与目标识别具有普遍的意义。超宽带天线作为超宽带系统的收发前端,在瞬态电磁散射的实验中更是必不可少的。研究内容包括金属圆盘目标,介质圆盘目标,柱状金属目标的电磁散射特性及两款超宽带天线的设计。
报告人简介:尹钰,博士研究生。主要研究方向:电磁散射的微观机制、超宽带天线。博士生导师:洪劲松。
 
Research on Dielectric Resonator Antenna and its Feed in WLAN Applications
Amin Muhammad
内容简介:Dielectric resonator antennas (3D antennas) are free from metallic losses, have a lot of applications in millimeter band where the conductor loss of a metallic antenna becomes severe. DR (ceramics materials) can tolerate more temperature; I think they can perform well in very hot environment (Fire, war, space) where metallic antenna fails to work. Today internet had become an essential part of our daily life. WLANs provide users an easy and potential access to users. So today we need a reliable WLANs system, which has higher data rates with high gain and better antenna efficiency. I think using DRAs in WLAN systems can enhance its efficiency, reliability, data rates and gain. In this research different techniques have been used to enhance the gain of DRAs and a MIMO DRA has also been designed for WLAN applications. First, we have designed different DRAs using CST and HFSS then have fabricated and tested them. Based on good results and innovation in our research, we have published our papers. The brief explanation of my published papers will be presented in my talk. I shall describe how my interest develops in DRAs, its importance, innovations, and objectives for our research work, the research background and significance of DRAs in various communication systems.
报告人简介: Amin Muhammad is a Ph.D. student at “School of Physics” of UESTC. His research interests include Antenna technology and communication technology.
告时 间: 20180510 9 : 00
告地 点: 万博最新客户端会议室204
    人: 洪劲松  教授