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- This paper presents a high power feed system for 7.3 m Cassegrain antenna. 介绍用于?7.;3 m Cassegrain天线的高功率馈源喇叭的设计。
- For a dual-reflector,such as Cassegrain antenna,the total scattered field should be the phase summation of the diffracted and reflected fieldsfrom the mainreflector and subreflector. 对于卡塞格伦等型式的双反射器天线,总散射场应该是主、副面绕射场,副面镜面场和反射绕射场等各项的相位相加。
- This paper describes a new method which uses IDFT (Inverse Discrete Fourier Transform) technique to do time domain near field measurement for antenna. 本文提出了一种利用离散付立叶反变换（IDFT）技术完成天线的时域近场测量的方法.
- The paper analyzed an S-band single ridged waveguide antenna used for near field measure by FDTD method and microwave transmition line theory. 本文采用FDTD方法以及微波传输线理论对一个用于近场测量、工作在S波段的单脊波导天线进行了分析。
- The larger sampling spacing is advantageous to enhance the measurement and data processing efficiencies for near field antenna measurements. 近场天线测量中,采用大的采样间隔,有利于提高测试和数据处理的效率。
- Cassegrain antenna is a kind of dual-reflector antenna, with characteristics of high-gain, narrow-beam, suppressed side lobes and agility in designing. 卡塞格伦天线是一种双反射面天线,其特点是高增益、锐波束、低旁瓣、设计灵活。
- A microstrip array antenna is designed and manufactured to work as the feed of the Cassegrain antenna system. 研制了一个用作卡塞格伦天线系统的馈源的微带天线阵。
- Previous HRTF measurement were lack of near field data. 以往在实际测量头相关传输函数时，缺乏近场数据。
- Loads distort every component of the structure of the Cassegrain antenna system. 载荷使卡塞格伦天线结构的每个部分发生变形。
- It has also been used to calibrate the same radiometer fitted with 800 mm and 368 mm diameter Cassegrain antenna. 文中还介绍了装有800mm和368mm直径卡塞格伦天线的同一幅射计的定标实验.
- A microstrip reflectarray cylindrical Cassegrain antenna system is designed, which has an fixed beam deviation angle in the azimuth. 设计了一个微带反射阵柱形卡塞格伦天线系统，使该天线系统在方位面方向产生了固定的波束偏移。
- The calibration results using MFCT close to the results by near field. 与近场校正结果比较，两者相近。
- The characteristics is used to design a ring-focus Cassegrain antenna and it was found that it has higher gain and lower sidelobe level. 文中还利用上述特性设计了一个大口径的焦环卡塞格伦天线 ,结果显示 :它有较高的增益和较低的副瓣电平
- The beam quality is good and the near field is avoid of filamentation. 在光的场形上，远场的角度可达到绕射极限的角度。
- This antenna is a 20m modified cassegrain antenna,its feed is a corrugated horn,and adopts multiple?moulding autotrack mono?pulse method. 天线采用20m卡塞格伦式天线，馈源为波纹喇叭，多模单脉冲自跟踪方案；
- Thus it provides a theoretical basis for design and adjustment of refector antenna, particularly the modified Cassegrain antenna. 为反射面天线尤其是修正卡塞格伦天线的设计和调整提供了理论依据.
- Complicated mathematical relations exist between beam direction angle and mechanical angle of the antenna pedestal in Cassegrain antenna system discussed in this paper. 文中介绍的卡塞格伦天线系统中,波束指向角度和天线座机械角度有着复杂的数学关系。
- The application of probabilistic analysis approach in the near field modeling of ocean outfall. 概率分析法在污水海洋排放近区模拟中的应用。
- The cylinder"s RCS of TM and TE,as well as the near field distribution are presented. 利用这个等效网络分析了多个分层偏心介质圆柱对TM和TE波的散射截面。
- This method is especially fit for the situation of multifocus focusing in the near field. 该方法尤其适用于多焦点近场聚焦的场合。
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