To reduce the complexity of design and fabrication cost it is necessary to analyze the basic characteristics of the antenna such as reflectance losses, gain, and far field radiation pattern to obtain good results.
分析天线之基本特性，如反射损失、增益、远场场形等，即可获得满意的结果，如此便可降低设计的复杂度与制造成本的低廉。
The far-field radiation pattern and its frequency dependence exhibit the possible application of the LHM in directive antenna technique.
远场方向图和频率依赖关系都表明左手材料在高方向性天线技术中有潜在的应用前景。
We have analyed the light beam quality、far field pattern、coupling efficiency of the devices.
通过实验我们得到了优化的合金工艺条件：即3800C时合金40秒为最佳条件，此时得到的欧姆接触电阻最少。
Through numerical calculation and analysis, the effects of structure parameters on far field pattern and threshold current density are studied.
通过数值计算分析，详细研究了结构参数对远场及阈值电流密度等的影响。
Measurement of single-mode fiber parameters by observation of far-field radiation pattern was introduced by Gambling et.
本文是在Gambling等人工作的基础上，对单模光纤参数测量的远场法进行了较详细的研究。
The numerical calculation shows the variation process of output laser beam of unstable resonator from annular pattern on near field, with gradual transition of laser energy in the annular region to the beam's center, to Airy disk pattern on far field.
理论计算结果表明，非稳腔输出端环状光束在中场区域激光能量逐渐向轴心方向转移，而在远场变为爱里型圆盘状光束的过程。
Tikhonov regularization numerical method for recovering the shape of an obstacle from the information of time harmonic incident acoustic wave and far field pattern of the scattered wave with frequency in the resonance region is investigated.
用Tikhonov正则化方法数值求解由声波散射场的远场模式信息来再现散射物边界形状的反问题。
Recover the acoustic wave impedance coefficient from the incomplete data of the far field pattern
利用远场模式的不完全数据反演声波阻尼系数
Aim To recover the impedance coefficient from the far field pattern of the scattered wave of the acoustic scattering problem with impedance boundary condition.
目的从阻尼边界条件声波散射问题的散射场的远场模式出发去反演阻尼系数。
Through the correction of phase and amplitude weighting, the conformal antenna can generate required sum beam far-field pattern and meet the design specification.
经过相位修正和幅度加权后的共形导引头天线，能使产生指定方向的和波束的远场方向图，并达到工程上的各项技术指标要求。
Influence of Satellite Retroreflector Precision on Far-Field Diffraction Pattern
卫星角反射器精度对远场衍射模式的影响
The authors have derived the space-time correlation functions of complex amplitude and intensity fluctuations for far-field diffraction region, with which the statistical properties of time-varying speckle pattern could be described completely.
推导出远场时变散斑振幅涨落及光强涨落的空-时相关函数，它们完整地描述了远场时变散斑的统计性质。
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.
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。
Far field pattern numerical analysis of reflector antenna based on different grid forms Quadrilateral Mesh Generation Based on STL File Format Model and Mesh Smoothing
基于不同网格形式的反射面天线方向图分析STL格式文件的四边形网格剖分与网格光顺
Real-time measurement of two dimentional far field pattern for semiconductor lasers
半导体激光器二维远场分布图的实时测量
We realized the computation in inverse medium scattering problems with multi-experimental data of far field pattern. Moreover, the analytical result of that the selected regularized parameter in each iteration accord with Tikhonov regularization theory from a few of numerical experiments is stated.
同时在文中考虑了多实验数据下远场测量的反散射问题的计算，并在数值实验中分析和总结了不同扰动下每步迭代的正则化参数，说明了它的选取符合Tikhonov正则化理论。
By cylindrical wave expansion method, the far field pattern of the theoretic analysis is gained for the use of cylindrical near-field data. Comparative analysis of simulated and calculated far-field pattern is given.
利用柱面波谱展开法对近场数据到远场方向图的计算理论分析，并对利用算法得到的理论远场方向图和仿真方向图进行了比较分析。
In this paper the general formulas on calculating far-field for the Vee Dipole Antenna at the space are derived from method of curvilinear integration and the field pattern, the radiation resistance and the directivity are given.
本文利用曲线积分的方法，导出了V型偶极子天线在空间任一点处远区场的一般数学表示式以及方向性函数、辐射电阻和方向性系数的计算式。
Pulse parameters and its influence on pulsed antenna measurements is presented in this paper. On the basis of the plane-wave theory of time-domain fields, formulae for time, frequency-domain far - field pattern and near-field far-field transformation is given.
研究了脉冲参数及其对测量的影响，根据时域场的平面波理论，给出了根据惠更斯源得到的时、频域远场方向图以及近远场变换公式。
We establish three basic results about the far field pattern and far field operator in the case of conductive problem: reciprocity for the far field pattern and the normality and injectivity properties of the far field operator.
本文中，我们将推导关于远场模式和远场算子的三个基本结果，即关于远场模式的互换性以及关于远场算子的正则性和单射性。