Low-Sidelobe Microstrip Array with Circular Polarization for Radio Frequency Identification Applications 用于射频识别的低旁瓣圆极化微带天线阵
The optical properties of circular polarization filters made of cholesteric liquid crystal thin films are investigated. 研究了胆甾相液晶薄膜滤光器的光学性质,给出了这种薄膜的制作技术。
In the methods, single feed, more feed and several patches consisting circular polarization are used to feed the antenna and improve the impendent or AR bands. 这些方法分别采用单点馈电,多点馈电或多元组合实现圆极化,均有效拓展了圆极化天线的阻抗匹配带宽和圆极化轴比带宽。
A Miniature Circular Polarization Antenna for RFID Warehouse Management 一种用于RFID仓库管理的小型化圆极化天线
Simulation and Realization of Antennas feed for UWB Circular Polarization Horn 超宽带圆极化喇叭天线馈源的仿真与实现
The product of X-band couple circular polarization feed is researched in order to exploit the oversea market. 介绍的X波段收发共用双圆极化馈源是为了拓展海外市场新研制开发的产品。
Spatiotemporal self-compression of high-intensity femtosecond pulses with linear and circular polarization in normally dispersive media is experimentally studied. 实验研究了圆偏振和线偏振高强度飞秒激光脉冲在正常色散材料中传输时的时空自压缩现象。
Design of Circular Polarization Cross Dipole Antenna Based on FDTD 基于时域有限差分法的圆极化十字振子天线设计
The Study of Electron Acceleration by Ultra-Intense Laser with Circular Polarization 超短超强圆偏振激光对电子的加速研究
Improvement Plan of Circular Polarization Switching of Ship Satellite Communication Antenna 船载卫通天线圆极化方式切换改进方案
The array is of simple structure, low sidelobe level and circular polarization characteristics. 该天线结构简单,具有低旁瓣与圆极化特性。
Design of the Ultra-broad Band Circular Polarization Microstrip Antenna Array 超宽频带圆极化微带天线阵列的设计
Dual Frequency and Dual Circular Polarization Antenna with High Isolation for Satellite Communication 一种具有高隔离度的双频双圆极化卫星通信天线
Experimental Generation and Application of Narrow-band Polarization-entangled Photon Sources A New Circular Polarization Microstrip Antenna Based on PBG Structure 窄带极化纠缠光源的实验制备及其应用一种基于光子带隙结构的新型圆极化天线
Quadrature exciting and quadrature receiving refer to make use of circular polarization RF coils. 正交激发和正交接收是指运用圆极化RF线圈。指出在MRI系统中,这些正交处理是系统最佳化所要求的。
In the calculation of circular polarization microstrip antenna, the effect of finite substrate is described. 在圆极化微带天线的计算中,详尽地讨论了介质截断的大小对天线性能的影响。
The transition from opacity to transparency of overdense plasma layers for the propagation of high-intensity laser pulses of circular polarization is investigated theoretically and by simulation. 在圆偏振高强度激光脉冲的传播过程中,对稠密等离子体层从不透明向透明的转变从理论上和以模拟的方法进行了研究。
This paper gives theoretical analysis and engineering design of the broadband circular polarization antenna element and the 3 bit digital phase shifter, and describes the composition of the antenna system and the performance of the prototype system. 文中介绍了宽带圆极化天线单元、3bit数字移相器的理论分析和工程设计,以及天线系统的组成和样机的主要性能。
Based on the moment method, a numerical method for calculation of the rectangular cavity crossed-slot antenna is presented. The theoretical results of the radiation characteristics such as input impedance, gain and axial ratio of circular polarization are given, which are validated by experimentation. 基于矩量法分析,本文提出了计算矩形腔十字裂缝天线的数值方法,给出了天线单元的输入阻抗、增益和轴比等辐射特性的数值结果,进行了实验验证。
The paper describes a kind of circular polarization feed, which is used for shaped beam antenna. 本文介绍了一种赋形波束天线用的圆极化馈源。
In this paper, the transfer matrix of circular polarization phase shifter is derived through coupled wave theory, transfer characteristics of elliptically polarized wave, circularly polarized wave, linear polarized wave are considered. 根据铁氧体耦合波理论推导出圆极化移相器对任意极化电磁波的传输矩阵,在此基础上研究了椭圆极化波、线极化波、圆极化波在移相器内的传输特性。
Research on GPS Antennas with Circular Polarization and Miniaturization GPS天线的圆极化和小型化研究
Firstly, the basic theory and analysis method of microstrip antenna is introduced. And then the realization of the circular polarization and feeding method of microstrip antenna is discussed. 首先详细介绍了微带天线的基本理论和分析方法,接着讨论了微带天线的圆极化实现和馈电方法。
The antenna has good circular polarization radiation characteristics. 天线具有较好的圆极化辐射特性。
It is obvious that elliptical or circular polarization laser suppress the harmonic radiation from the experiment dates. 实验发现,椭圆偏振和圆偏振激光对高次谐波有明显的抑制作用,当激光为圆偏振时没有观测到高次谐波信号。
The circular polarization of this antenna is realized by the use of perturbation. 天线采用切角微扰的方法实现圆极化。
In the two types of PCF mentioned above, guided modes with quite pure circular polarization are revealed. 在上述两种PCF中,我们都找到了很纯的圆偏振导模。
Based on the dual-band technology and the circular polarization for a receiver antenna, a small single feed dual-band circularly polarized microstrip antenna is designed. 结合微带天线双频技术和导航天线对圆极化的要求,设计了一个小型单馈双频圆极化微带天线。
This linearly polarized antenna elements placed orthogonal space to achieve the dual-polarized design, and gives the structure of the two-plane polarization and circular polarization design. 将此线极化天线单元空间内正交放置,实现了双极化设计,并给出了平面结构上的双线极化和圆极化设计方案。