單脈沖天線的副面散射特性
THE CHARACTERISTICS OF THE SCATTERING PATTERNS FROM A SUBREFLECTOR OF A MONOPULSE ANTENNA
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摘要: 本文研究修正卡氏單脈沖天線的副面散射特性。首先給出計算和、差散射場的表示式,其次給出天線直徑為60左右的副面散射特性的計算結(jié)果及實測結(jié)果。本文的主要目的是通過副面散射特性的分析,說明通常單脈沖卡氏天線采用鏡面修正技術(shù)可提高天線和效率和次級差波瓣斜率。同時給出天線實測結(jié)果。
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關(guān)鍵詞:
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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