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本文讨论了在电子支援措施(ESM)系统中空腔反射的平面螺旋天线得到广泛应用的原因,还讨论了人们奇缺对这种天线的基础分析和对其工作的详尽理解.由于没有任何已发表的、对整个天线的数学分析,本文采用基本的推理法分析天线的三个主要部分——螺旋辐射体、后腔和平衡变换器的功能和工作原理.最后讨论了三种具体的螺旋天线设计的性能,以说明这些天线目前可达到的性能水平.这三种天线是:覆盖0.4—4.0 GHz 频段的缩小尺寸的方形天线;覆盖2.0—18.0 GHz 标准频段的直径为52mm 的天线;一个覆盖18.0—40.0 GHz 频的直径为16mm 的同一轴线上的天线和天线罩,它采用双脊波导输出.
This article discusses the reasons for the widespread use of cavity-reflected planar helical antennas in Electronic Support Measures (ESM) systems, as well as a fundamental analysis of the antenna and an exhaustive understanding of its work on this antenna. As no published , The mathematical analysis of the entire antenna, this paper uses the basic reasoning method analysis of the antenna’s three main parts - the function of the spiral radiator, the rear cavity and the balun converter and working principle.Finally, the three kinds of spiral antenna design To illustrate the performance levels currently achievable for these antennas: a downsized square antenna covering the 0.4-4.0 GHz band; a 52mm diameter antenna covering the standard frequency band from 2 to 18.0 GHz; an antenna covering 18.0 Antenna and radome on the same axis with a diameter of 16 mm at -40.0 GHz, which uses double ridge waveguide output.