天线方向性

口径天线方向性系数和增益的快速估算方法

Method of fast estimating aperture antenna directivity and gain

考虑地面反射时单极天线方向性的矩量法分析

Methods of Moment on Monopole Antenna Directivity With

计算天线方向性的GTD法

The GTD Method of the Antenna Pattern Calculation

磁偶极子天线方向性的边界元解法在UWB通信中，利用赫兹磁偶极子天线的微分特性，由输入方波的上升沿产生窄脉冲。

For a UWB communication system , by using differential characteristic of Herz magnetic dipole antenna , the narrow pulse can be produced from the rise edge of input square-wave signal .

本文简要地介绍了曲面及直劈几何绕射理论（GTD）在计算天线方向性中的应用。

In this Paper , a summary of Geometrical Theory of Diffraction ( GTD ) by a curved surface and a straight wedge , and its application to calculation of antenna pattern is given .

雷达天线方向性对目标回波图像影响的仿真

Simulation of the Effect of Radar Antenna Directionality on Target Echoes Image

背射模螺旋天线方向性研究及其应用

Study on the power distribution of backfire helical antenna and Its Applications

曲线振子天线方向性系数的近似计算

Approximate Calculation of the Directivity of Curvilinear Dipole Antennas

通过比较测量结果与计算结果可见，这种方法除了测量简单方便以外，在所用天线方向性较好的条件下，测量精度较高。

The accuracy of this method increased with the directional characteristics of the antenna .

通过分析辐射贴片形状和馈电结构对天线方向性的影响，提出矩形辐射贴片和双点馈电结构来改善天线的全向特性。

By analyzing the effect of the shapes of radiation patch and feed structure to the radiation pattern , the rectangular patch and the dual-feed structure are proposed for improving the omni-directional characteristic .

机体散射对机载短偶极子天线方向性影响的研究已见论述，然而，有关实际的机载共形天线以及共形天线阵的分析还没见报导。

The pattern of on-aircraft antenna has been studied , but the influence of aircraft 's scattering field to the actural antenna or antenna array located on the aircraft conformally has not been reported until now .

结果表明，应用柱面电磁带隙结构后，基站天线辐射方向性有明显增加，在E面实现了更窄的波束，而H面保持了较宽的波束，符合对基站天线性能的要求。

The research results show that the directivity of base station antennas is significantly increased , a narrower beam-width is realized in E-plane and a wider beam-width is held in H-plane , which completely conform to the performance requirement for base station antennas .

采用此覆层的光子晶体天线，方向性系数（11.2dB）已经非常接近理论极限（12.0dB）。

Using this cover , the directivity of the patch antenna ( 11.2dB ) is very close to its theoretical limit ( 12.0dB ) .

半波振子椭圆环天线阵方向性系数的优化

Optimum Directivity for Oval Array of a Half Wavelength Dipole Antennas

倾斜式板状天线垂直方向性·论文·函数的建立与讨论

Calculation and analysis of vertical directivity function for inclined planar antenna

基于模拟退火算法校正天线阵列方向性误差

Calibration of directivity errors of antenna array based on simulated annealing

天线单元方向性越强，信道容量越大。

The stronger antenna directivity is , the greater the channel capacity .

通过实虚空间的概念，分析了扫描中的阵列波瓣，总结给出相控阵天线的方向性系数。

Using the concept of real and imaginary space , the scanning lobe is researched .

机体散射对共形天线阵方向性的影响

The Influence of the Aircraft 's Scattering Field to the Pattern of the Conformal Airborne Antenna Array

为了增强天线的方向性系数和增益，以四元天线阵为例，研究了这种天线组成的天线阵的辐射特性，给出了天线阵的三维辐射方向图。

To improve the directivity and gain of the antenna , an array composed of 4 elements is analyzed .

研究的主要内容是不同反射板形状和在相同横截面积不同反射板夹角对天线的方向性的影响。

The main contents of studying are different baffle-board shape and with the same area and different angles impact antenna directionality .

本文介绍了分析移动通信基站的电磁辐射情况预测模型，结合天线的方向性和增益情况对不同地区不同辐射方向上的电磁辐射情况做出预测并与实测数据进行比较分析。

This paper introduces the electromagnetic radiation prediction model of a base station . In combination with antenna gain and antenna directivity , predicts the electromagnetic radiation conditions in different areas , and compares the prediction results and practical measurement data as well .

低频UWBSAR系统具有较大的方位向积累角，天线方向图非均匀性对系统性能的影响不能忽略。

The wide accumulating azimuth angle is one of the main characteristics of low frequency UWB SAR , so the effect of the antenna pattern on the system performance cannot be neglected .

基于RWG分析考虑互耦的贴片天线阵列的方向性

Analyze The Direction Characteristic of Patches Arrays Considering The Mutual Coupling Based on RWG

旋转场天线垂面方向性的理论探讨

Theory of Perpendicular Plane Directionality of the Swirling Field Antenna

最后计算用沃尔什电流加权激励的天线阶的方向性。

The directivity of in array excited by weighted Walsh current has also been calculated .

模拟结果表明，天线阵的方向性以及增益都得到了加强。

Simulated results show that the directivity and the gain of the array are improved .

根据电磁场基本理论，研究了在电子战中天线辐射的方向性问题。概括了电子战基本内容，并讨论了物理学在现代电子战中的地位与作用。

This paper discusses the directivity of antenna in electronic warfare by electromagnetic theory and the important part of electronic warfare that physics play .

将天线的方向图可重构性和MIMO天线选择系统结合，提出了一种基于可重构天线辐射状态的选择算法。

And with the combination of pattern reconfigurable ability of antenna and MIMO antenna selection system , we propose an antenna selection algorithm based on the state of radiation pattern of reconfigurable antennas .

随机误差对电扫阵列天线副瓣和方向性系数的影响

The Effect of Random Error on the Sidelobes and Directivity of Phased Array Antenna