- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
单脉冲环焦天线和差一体化设计
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单脉冲环焦天线和差一体化设计
内容简介：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3.5?m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6.5?dB减为4.2?dB,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.
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.
作者：程臻, 吕善伟, 姜新发,
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,
内容简介：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3.5?m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6.5?dB减为4.2?dB,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.
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.
作者：程臻, 吕善伟, 姜新发,
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,
