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A comparison of time versus frequency domain antenna patterns

机译:时域和频域天线方向图的比较

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摘要

This paper compares the performance of antenna arrays that use sinusoidal and ultra-short pulse waveforms. There are two parts to the paper: first, a comparison of narrowband versus ultra-wideband linear arrays using an analytic approach and second, a series of computer simulations used to extend the analytic results and to show the characteristics of nonstandard array configurations. Analysis shows that antennas using ultra-short waveforms have highly desirable pattern properties that do not appreciably degrade under conditions of high array sparsity, failed elements, or antenna element position errors. Patterns are given that show these properties directly. These results are of particular importance to the emerging technology of base-band or time-domain communications and remote sensing. It addresses the practical problem of designing extremely large aperture space-based arrays without populating those arrays densely with antenna elements and also reducing the traditional fabrication tolerances.
机译:本文比较了使用正弦和超短脉冲波形的天线阵列的性能。本文分为两个部分:第一,使用分析方法比较窄带和超宽带线性阵列,第二,用于扩展分析结果并显示非标准阵列配置特征的一系列计算机模拟。分析表明,使用超短波形的天线具有非常理想的方向图特性,在阵列稀疏度高,元件失效或天线元件位置误差大的情况下,这种特性不会明显降低。给出了直接显示这些属性的模式。这些结果对于新兴的基带或时域通信和遥感技术尤为重要。它解决了设计非常大的基于孔径的阵列的实际问题,而不用天线元件密集地填充那些阵列,并且还降低了传统的制造公差。

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