The simple formulae of fast calculating aperture antenna directivity and gain are derived using antenna beamwidths. Applied range of these formulae are analyzed and discussed.
导出了用天线方向图的半功率波束宽度快速计算口径天线方向性系数和增益的简单表达式，分析讨论了这些公式的应用范围。
The results show that the smart antenna can efficiently strengthen useful signal, decrease interference and form the optimum directivity diagram.
结果表明，智能天线可以有效增强有用信号，降低干扰，从而形成最优的方向图。
The antenna received signals with no directivity.
那种天线可接受没有方向性的信号。
Millimeter-wave dielectric lens antenna is a kind of aperture antenna with high directivity.
毫米波介质透镜天线是一种高方向性的口径天线。
The sum and difference patterns as well as the directivity of the monopulse antenna arrays are optimized based on genetic algorithms (GA).
采用遗传算法来优化单脉冲阵列天线的和、差方向图和方向性系数。
The directivity of curvilinear dipole is analysed by the basic principle of antenna array, the relationship between the directivity and the length of curvilinear dipoles is obtained.
本文利用天线阵基本原理近似分析了曲线振子的方向性系数，得到了方向性系数随曲线振子长度的变化关系，为曲线振子天线的进一步研究及设计提供参考。
Multilayer radome will exert a tremendous influence on low sidelobe antenna pattern. Integrated directivity analysis of antenna with radome will be helpful to airborne antenna optimization design.
多层介质天线罩对机载天线低副瓣性能有显著的影响，对带罩天线的方向性进行一体化分析有助于机载天线的优化设计。
The detailed measurements of the antenna, including VSWR, directivity and gain are processed. The measurement results are compared with the electromagnetic simulation results and analyzed.
通过对天线进行了驻波比、方向图、增益的详细测量并和软件仿真结果进行了比对和深入的分析。
The sparse antenna arrays with the strong directivity have a great deal applications in aperiodic arrays.
这些优点使得稀布天线阵列成为非周期阵列中颇具实用性的一类阵列天线。
The sparse antenna arrays with the strong directivity have a great deal applications in aperiodic arrays.
这些优点使得稀布天线阵列成为非周期阵列中颇具实用性的一类阵列天线。
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