天线辐射方向图

反射面变形对天线辐射方向图的影响

The Effect of Reflector Surface Distortion on the Antenna Radiation Pattern

利用仿真得到的透镜天线辐射方向图，提出了对透镜天线结构的修正方法。

The Amendment technique of the lens antenna structures is improved utilizing the simulated radiation pattern .

机载相控阵天线辐射方向图的分析

Analysis of the airborne phased array pattern Optically Controlled Phased Array Antenna

应用近场线散射技术测量天线辐射方向图

Antenna Radiation Pattern Measurement Using Near-Field Wire Scattering Technique

机载天线辐射方向图研究

Study of the Airborne Antenna Pattern

卫星天线辐射方向图

Satellite antenna radiation patter

通过了有限接地板对双层圆形贴片电磁耦合天线辐射方向图影响的实验研究，成功地解决了展宽这种天线辐射方向图的问题。

The finite ground plane effect on the two layer microstrip antenna radiation patterns is studied experimentally , which widens the radiation patterns successfully .

在部分烧蚀介质层中或附近的水平线天线辐射方向图的计算近地水平接地天线的数值分析

CALCULATION OF RADIATION PATTERN OF HORIZONTAL WIRE ANTENNAS IN OR NEAR PARTIALLY ABLATED STRATIFIED DIELECTRIC STRUCTURES Numerical analysis of horizontal wire antenna connecting ground above multi-layered medium

影响阵列天线辐射方向图的主要因素有：阵元数目、阵元间距和阵元激励权值，通过调整这几个主要参数来设计天线的辐射方向图。

Array antenna radiation pattern of the main factors : the number of array elements , array element spacing and the array element excitation weights by adjusting these parameters to design the main antenna radiation pattern .

分别选择2位、4位和6位移相器，比较采用连续相移和不同精度的量化相移时，天线辐射方向图的变化。

The 2 bit , 4 bit and 6 bit phase shifter are chosen respectively in this paper . According to the comparison of the continual phase and the quantitative phase with different precisions , the change is presented .

本文应用几何绕射理论（GTD）计算了弹载天线的辐射方向图。

The pattern of an antenna in missile is calculated by using GTD method .

80MHz以下辐射场方向图与偶极子天线的辐射方向图相似，低于100MHz的辐射主要在针电极一侧，而高于100MHz以上的辐射场方向图极为复杂，其主要辐射在板电极的后方。

The direction diagram of low-frequency field is similar to the direction diagram of dipole aerial . Radiation frequency below 100 MHz focus on the side of needle , and the direction diagram of high-frequency radiation filed is very complicated as well as the main radiation is behind the board .

天线三维辐射方向图的近似计算方法

A Novel Approximation Algorithm for Calculating Three-Dimensional Radiation Patterns of Antennas

电大尺寸导体附近线天线的辐射方向图研究

Radiation patterns of wire antenna near electrically large conductor

接着分析了单元天线的辐射方向图。

Then the antenna radiation pattern is analyzed .

由于单元间互耦的存在，超低副瓣阵列天线的辐射方向图发生变化。

Mutual coupling between array elements have some effects on the ultralow sidelobe arrays .

其次，巧妙地利用微波光学强度定律、几何光学法和物理光学法给出了计算附加相位校正副面的多波束抛物环面天线的辐射方向图公式；

Secondly , the formula of radiation pattern for multiple-beam parabolic torus reflector antenna with phase-correcting subreflector is given by using the law of microwave optics intension , geometrical optics method and physical optics method skillfully ;

计算了机载单极子天线的辐射方向图，通过与单极子天线在自由空间方向图的比较，分析了飞机对机载天线方向图的影响；

In this paper , a radiant pattern of an airborne monopole antenna is obtained , by comparison with the antenna 's patterns in free space , the effect of the aircraft on the antenna 's radiation characteristics is analyzed .

本文运用互易原理导出了圆口径分布的天线近区辐射方向图与测量距离的关系。

- In this paper , the dependence of circular aperture antenna near-zone radiation patterns on measurement distance is derived using the reciprocity theorem .

通过仿真表明天线的远场辐射方向图、驻波比VSWR均满足要求，并且分形特有的尺寸缩减性实现了超宽带天线的小型化。

The simulation results show the far-field antenna radiation patterns . The standing wave ratio VSWR requirements are met , and the unique fractal characteristics reduce the size of the ultra-wide band antenna .

推导了天线的辐射公式，并对天线的辐射方向图和频带宽度进行了讨论。

The radiation performance of the antenna illuminated by a round wave-guide is described in detail by clear physical pictures .

采用模式匹配法分析了有限长V锥天线的辐射特性，并给出了天线的辐射方向图。

Using mode match matching , the paper at first time analyses the radiation fields of the V-conical antennas with finite length for the first time .

该天线虽然实现了双频段阻抗特性，但是天线高频辐射方向图发生裂瓣。

Although the antenna is of dual-band impedance performance , its radiation patterns at the high frequency are deformed .

用矩量法计算了飞机天线及其机身表面的电流分布，推导了飞机天线的辐射方向图。

Using the moment method , the antenna and surface currents of aircraft are calculated . Finally , the radiation pattern of a D-type-no-man aircraft is induced .

文章先结合平面天线基本理论和端口网络理论，对平面天线的远区辐射方向图进行了分析，并提出了相应的数学表达式。

In the paper , the far-field radiation pattern of planar antenna array is analysed by the basic theory of planar antenna array and the port network theory , and has derived the corresponding formulas .

因此在论文的最后一部分，综合运用高频方法，对单反射面天线的辐射场进行推导计算，在MATLAB环境下，得出天线辐射方向图。

So as the last part of the paper , the radiation field of paraboloid antenna was deduced with high-frequency asymptotic method synthetically . The pattern of a paraboloid antenna was obtained in the MATLAB environment .

利用阶梯近似方法结合缝隙天线电路模型分析其输入阻抗，最后采用GTD方法计算该种天线的辐射方向图。

Combination of ladder approach method and equivalent circuit model of slot antenna had been used to analyze its input impedance . Finally , GTD had been used to calculate the radiation pattern .

电可重构天线能够以非机械的控制方式改变天线的关键特性，如天线的辐射方向图、极化、辐射损耗、输入阻抗和进行天线调谐等，因此有着广泛的发展前景。

Electronically reconfigurable antenna is new promising area of antenna designs that alters the key antenna element properties ( radiation pattern , polarization , radar cross section , tuning and input impedance ) in a non-mechanical but controlled manner .

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。

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 .

天线设计中这三个要素之间的关系是复杂的、非线性的，其中阵元数目、不规则的阵元间距对天线辐射方向图的影响很难用数学方式进行精确的描述。

To design antenna , the relationship among these three elements is complex , nonlinear , in which the number of array elements , irregular element spacing of the antenna array radiation pattern of difficult to describe mathematically precise .