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beam reflector
相关语句
  反射面
     Study on the radiation characteristics of a shaped beam reflector antenna under the multi-hole damnification
     多孔毁伤时赋形反射面天线辐射特性的研究
短句来源
     A Study on the Radiation Characteristics of a Shaped Beam Reflector Antenna Subjected to the Single-Hole Damage
     单孔毁伤对赋形反射面天线辐射特性的影响
短句来源
     Influence of Distortion of a Shaped Beam Reflector on the Radiation Characteristics of an Antenna
     反射面变形对天线辐射特性的影响
短句来源
     PO(physical optics) method is applied to calculate the radiation patterns of the distorted shaped beam reflector antenna in this paper. The reflector distortion model is built by using the testing results.
     本文利用物理光学法 (PO)分析了赋形双弯曲反射面天线在冲击波形变效应的影响下远区辐射场的变化 ,并由测试结果建立了反射面形变的数学模型 ,推导出了辐射场的计算方法。
短句来源
     The influence of distortion of a shaped beam reflector on the radiation characteristics of an antenna under shock wave is studied.
     研究在冲击波作用下,赋形双弯曲反射面变形对天线辐射特性的影响.
短句来源
  相似匹配句对
     The Spherical Reflector Antenna with Multiple Beam
     多波束球形反射面天线
短句来源
     CHOSTLESS WEDGED BEAM SPLITTER AND REFLECTOR
     可消除鬼线或幻影的楔形分束器和楔形反射镜
短句来源
     Beam Crystallizations
     束流晶化
短句来源
     Beam Chopper
     束流调制器
短句来源
     Theorem of Inverse Reflector
     回复反射器的理论
短句来源
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  beam reflector
In certain cases it is advantageous to use a molecular-beam reflector, when a uniform distribution of condensate over a large substrate surface is desired with a maximum economy of the evaporated substance.
      
Design of a molecular-beam reflector yielding a uniform distribution of condensate over the plane of its cross section
      


By reviewing author's study on doubly curved shaped beam reflector antennatheory,it is suggested that by utilizing common elliptic shaped strips reflectors can be constructed, thus generalizing synthetic theory. Formulae have been derived for principal and cross polarization components in far field as well as for antenna in the far field with offset feed or off-axis feed. In particular, formulae for far field patterns in the main radiating region have been given.

本文综述了赋形波束双弯曲反射器天线理论之研究。主要内容是:反射器的分类问题;提出了可采用一般的椭圆型条带(称为斜条带)来组成反射器,而水平带和焦点带只是它的特殊情形,使得综合理论更一般化;给出了此类天线远区场的主极化分量和交叉极化分量的计算公式,以及馈源斜置时和馈源偏离轴线时天线的远区场计算公式,尤其是还推导了在主辐射区内天线远区场的渐近公式。

The radiation characteristic of a shaped beam reflector antenna subjected to a single-hole damage is studied. The far field of the shaped reflector antenna is modeled and analyzed using the method of physical optics based on surface current integration. Comparisons between the calculated results and those measured before the damage were made, and good agreement has been found to exist. A study was then made on the radiation pattern characteristics of the antenna after its reflector is damaged...

The radiation characteristic of a shaped beam reflector antenna subjected to a single-hole damage is studied. The far field of the shaped reflector antenna is modeled and analyzed using the method of physical optics based on surface current integration. Comparisons between the calculated results and those measured before the damage were made, and good agreement has been found to exist. A study was then made on the radiation pattern characteristics of the antenna after its reflector is damaged by bomb explosion, including the influence of the size and position of the damage. The larger the size and the closer the position of the damage hole to the reflector center, the higher will be position of the side lobe and the lower will be the gain of the antenna.

研究赋形反射面天线的反射面在单孔毁伤条件下的辐射特性,利用基于表面电流积分的物理光学法,对赋形反射面天线的远场辐射特性进行了建模和分析,比较了反射面完好时辐射特性的计算结果和测试值,具有很好的一致性.重点探讨了天线反射面单孔毁伤后远区辐射特性随孔径及孔位置的变化规律,得出毁伤孔径越大或孔越靠近反射面中心位置时,天线的增益下降越多,副瓣电平提高越多的结论.

PO(physical optics) method is applied to calculate the radiation patterns of the distorted shaped beam reflector antenna in this paper. The reflector distortion model is built by using the testing results. The calculation results show that the radiation patterns become degraded due to the local distortion of the reflector. The peak sidelobe level in the azimuth plane becomes higher as the distortion area is enlarged. It can be seen that the influence of the distortion in the center of the reflector...

PO(physical optics) method is applied to calculate the radiation patterns of the distorted shaped beam reflector antenna in this paper. The reflector distortion model is built by using the testing results. The calculation results show that the radiation patterns become degraded due to the local distortion of the reflector. The peak sidelobe level in the azimuth plane becomes higher as the distortion area is enlarged. It can be seen that the influence of the distortion in the center of the reflector is much bigger than that near the edge of the reflector.

本文利用物理光学法 (PO)分析了赋形双弯曲反射面天线在冲击波形变效应的影响下远区辐射场的变化 ,并由测试结果建立了反射面形变的数学模型 ,推导出了辐射场的计算方法。结果表明 ,由于反射面的局部形变 ,直接导致辐射方向图的恶化 ,并且随着形变部分面积的增大 ,水平面的副瓣抬高很大 ,不同部位的形变对方向图的影响也是不同的 ,中间部位形变对反射面方向图的影响要大于边缘形变对反射面方向图的影响

 
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