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| 单脉冲环焦天线和差一体化设计 | |
| 引用本文： | 程臻,吕善伟,姜新发.单脉冲环焦天线和差一体化设计[J].北京航空航天大学学报,2001,27(1):12-15. |
| 作者姓名： | 程臻 吕善伟 姜新发 |
| 作者单位： | 1. 北京航空航天大学 电子工程系; 2. 中国航天机电集团二院23所 |
| 摘 要： | 分析了单脉冲环焦天线差通道性能较差的原因,推荐了适用的和差口径分布函数,得出了所需馈源差方向图计算式, 提出了和差性能一体化设计步骤.为了验证理论方法的正确性,以3.5m变极化赋形单脉冲环焦天线为例,用本文提出的方法修改设计,使"和差矛盾"由6.5dB减为4.2dB,差方向图分离角由1.9°降为1.4°.因此, 使用特殊设计的单脉冲馈源可望将归一化差斜率提高到1.4. |
| 关 键 词： | 单脉冲天线 天线方向图 口面效率 环焦天线 和差通道 双反射面天线 |
| 文章编号： | 1001-5965(2001)01-0012-04 |
| 收稿时间： | 1999-08-25 |
| 修稿时间： | 1999年8月25日 |
Sum-Difference Unified Design of Monopulse Ring-Focus Antenna |
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| CHENG Zhen,L Shan-wei,JIANG Xin-fa.Sum-Difference Unified Design of Monopulse Ring-Focus Antenna[J].Journal of Beijing University of Aeronautics and Astronautics,2001,27(1):12-15. | |
| Authors: | CHENG Zhen L Shan-wei JIANG Xin-fa |
| Institution: | 1. Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering; 2. Beijing Institute of Radio Measurement |
| Abstract: | The relatively poor performance of difference channel of a monopulse ring-focus antenna is accounted for, suitable aperture distribution functions are recommended, formulae of feed difference pattern needed are presented and sum-difference unified design method is put forward. To testify the theoretical method, the authors take a 3.5m C-band monopulse shaped ring-focus antenna with dual-polarization as an example. By using the presented method, the gain difference between the sum channel and the different channel is reduced from 6.5dB to 4.2dB , and the separation angle of the apexes of the different pattern of the antenna from 1.9° to 1.4°. Therefore, the normalized slope of difference pattern arrives at 1.4 with a particular monopulse feed. |
| Keywords: | monopulse antennas antenna directional patterns aperture efficiency circular ring focus sum and difference channels dual reflector anten |
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