单脉冲天线的副面散射特性
THE CHARACTERISTICS OF THE SCATTERING PATTERNS FROM A SUBREFLECTOR OF A MONOPULSE ANTENNA
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摘要: 本文研究修正卡氏单脉冲天线的副面散射特性。首先给出计算和、差散射场的表示式,其次给出天线直径为60左右的副面散射特性的计算结果及实测结果。本文的主要目的是通过副面散射特性的分析,说明通常单脉冲卡氏天线采用镜面修正技术可提高天线和效率和次级差波瓣斜率。同时给出天线实测结果。
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Abstract: This report covers the studies of the characteristics of the scattering patterns from a subreflector of the modified monopulse dual reflector antennas. In this report, at first the basic computed formulas of the far-field sum and difference scatering patterns are deduced, and then the computed and measured results of the scattering patterns for the antenna of about 60 A diameters are obtained.By the analysis and experiment of the scattering characteristics of a subreflector of the monopulse antenna, a high sum efficiency and slope of secondary difference pattern can be obtained, using optically shaped reflector approach. Finally, the measured results of the modified cassegrainian monopulse antenna are given. -
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