Numerical Simulations of the Radiation Characteristics of Reflector Antenna Under Shock Wave Loading 冲击波作用下反射面天线辐射特性数值模拟研究
On the Bandwidth of Planar Slot Antenna Array Fed by Low Waveguide Experimental investigation on the span loading in compound lean compressor cascades with slots air injection 扁波导馈电的平板缝隙天线阵的带宽扩展高负荷缝隙弯曲扩压叶栅展向负荷实验
RCS Reduction and Scattering Control for Antenna Based oCn Port Loading 基于端口加载的天线RCS减缩与散射控制
A novel GPR antenna that the dipole with discrete exponential resistive loading is above the image plane is present in this paper. 该文给出一种新型的探地雷达天线,该天线为置于镜像面上且具有离散指数电阻加载的单偶极子。
The Current Distribution on an Antenna with Distributed Resistive Loading Obtained by Moment Method 分布电阻加载天线电流分布的矩量法求解
The Current Distribution on an Antenna with Continuous Resistive Loading 连续电阻加载偶极天线的电流分布
This paper studied antenna structure's discrete variables optimum design under multiple loading conditions in accordance with the complexity of antenna structure. 针对天线结构受载及工作状态的复杂性,研究了天线结构的多工况离散变量优化设计问题。
Analysis of a Planar Loop Antenna with Loading 平面型加载圆环天线的分析
A loading scheme is proposed for the mobile Very-Low-Frequency antenna, and loading parameters are optimized. 提出一种加载机动甚低频天线的方式,对加载参数进行了优化。
In accordance with the characteristics of reverse phased horizontal antenna, the method of concentrated resistor loading is adopted in this paper to realize the broad banded reforming of the antenna. 本文针对双极天线的特点,采用集中加载的方法在工程上实现了双极天线的宽带化改造。
We choose a project with loaded annual ring microstrip antenna, and the character of compact and broadband is achieved by loading a chip-resister to the antenna. 文中选择与引信弹体共形的环形微带天线作为设计方案,通过对环形微带天线加载电阻,实现天线的小型化和高带宽;
According to the characteristic of antenna structure, the probability description of multi loading cases is presented. 根据天线结构的特点,提出了结构多工况的概率描述;
It is shown that the antenna profile can be lowered through parallel dielectric loading. 研究表明对偶极天线进行并联介质加载能够降低天线的轮廓。
Firstly a mathematic model is established for optimizing design of antenna structure's continuous variables under intense explosion shock wave loading, which is constrained by structure's accuracy and stress. 首先建立了强爆炸冲击波作用下天线结构受精度和应力约束的连续变量优化设计数学模型;
The simplified model of the missile is built using conducting cylinder. The high frequency-Geometrical Theory of Diffraction ( GTD) is used to analyze and calculate the pattern of monopole antenna, Huygens antenna, micro-strip-spiral antenna and horn antenna loading with dielectric. 用金属导电圆柱体建立了导弹的简化模型,利用几何绕射理论(GTD)分别分析计算了弹载单极子天线、惠更斯元面天线,微带螺旋天线和介质环加载圆锥喇叭天线的辐射方向图。
Reducing the RCS of the microstrip antenna by cutting slots and loading a shorting-post 利用开槽和短路探针加载减缩微带天线RCS
It is hold that one can increase static capacitance, reduce mode of input reactance and enhance the antenna gain by increasing down lead wires, their distances or lengthening the top loading wires. 研究表明,增加引线数目、引线间距和加长顶线长度均可以增加天线系统的静电容,减小输入电抗的模值,并使天线的增益有所改善。
This paper studies the operation of missile's antenna housing in heating and loading during flight, and puts forward the main requirements to design the joining way of the housing, material performance and selection of link and the needs for glue and cement. 研究了导弹天线罩在导弹飞行过程中加热加载的工作情况,提出了天线罩连接方式设计的主要要求、连接环材料性能及其选择、胶和胶接要求。
Optimum design of antenna structure's discrete variables under intense explosion shock wave loading 强爆炸冲击波作用下天线结构的离散变量优化设计
Through coupling the pedestal and the reflector together, this paper presents a FEM model, then the static and dynamic finite element analysis of the whole antenna structure was made under multiple loading conditions. 将座架和反射体进行耦合,建立了有限元分析模型,在此基础上对耦合的整体结构进行了多工况静力、动力分析。
Then a microstrip antenna with negative permeability structures is constructed by loading the permeability structures to the substrate. Compared to the conventional microstrip antenna, the antenna has lower loss, greater gain and bandwidth at working frequency. 将负磁导率结构印制在普通微带天线的基板上形成负磁导率结构微带天线,对比普通微带天线,该天线在工作频率附近回波损耗及带宽增大,同时天线的增益有所提高。
Monopole antenna, equivalent to a dipole antenna, resistive loading antenna and the sleeve antenna has been improved and simulation by using CST Microwave Studio simulation software. And it gets better antenna electrical performance parameters. 3. 使用CST微波工作室仿真软件对单极子天线、折合振子天线、电阻加载天线和套筒天线进行了改进与仿真,优化天线尺寸参数,得到了较理想的天线电学性能参数。
The simulation results show that the antenna performance has been greatly improved after the use of arcs instead of serrated. 3. Through adding metal wire and loading slot, the miniaturization and dual-band were achieved. 仿真表明,利用圆弧代替锯齿之后,天线的性能得到很大的提高。3.通过添加金属线和缝隙加载实现了天线的小型化和双频工作。
On the basis of simulation on three-element ESPAR antenna, the current relationship between the central driven element and parasitic elements including a director and a reflector is analysed and the best loading reactance values to meet the current relationship are found. 在仿真计算的基础上,分析了三单元ESPAR阵列天线中心激励振子、引向振子和反射振子之间的电流关系,找出了满足电流关系的最佳加载电抗值。
In the above three types of antenna, The first two are the dual-band frequency microstrip antenna design ( W-CDMA and WLAN antenna), take the method of loading slotted impedance to achieve dual-band frequency antenna. 在上面三种天线中,前两种是微带天线的双频设计(WCDNMA天线和WLAN天线),采取开槽加载阻抗的方法,实现了天线的双频段。
Finally, a new kind of frequency and polarization hybrid reconfigurable antenna is designed based on analyzing of single-feed circular polarized microstrip antenna and changing the surface current distribution of an antenna using the method of loading switches. 最后基于对单馈电微带天线圆极化原理的深入剖析,利用加载开关改变天线表面电流分布,提出了一种频率和极化混合可重构天线。
Then three methods to improve the working efficiency of the miniaturized shortwave antenna are proposed, including the umbelliform prolong of the loading metal bar method, the dielectric loading method and the method of using helical structure to replace the metal bar. 提出了三种提高天线工作效率的方法,分别是伞形延长法、介质加载法、螺旋结构替代法。
Aberrance of the horizontal pattern of pole was concerned, which was caused by the mutual coupling in antenna array. During the analysis of pole pattern, mutual coupling caused by un-excited elements and loading caused by cable connected to them were considered. 针对圆形阵列中单元间相互耦合作用引起单元水平面方向图的畸变这一问题,分析了未激励单元的互耦作用以及这些单元端接电缆的加载作用对激励单元阵中方向图的影响。