The advances in unmanned aerial vehicles (UAV) and their applications in various areas of military, communications made the researchers focus on the design of compact, wide beam, lightweight antennas. In this article, a novel miniaturized printed dipole antenna with quasi rhombus shape exhibiting an Impedance bandwidth of 113% (within 2:1 VSWR for the frequency range from 6.3 to 23 GHz) is presented. The length and width of the antenna element in terms of λ_6.5 considered at the resonant frequency of 6.5 GHz is 0.347λ_6.5 × 0.369λ_6.5 (16 mm × 17 mm). Design equations are included to carefully match the impedance at every segment of the antenna. The optimized element is fabricated to confirm the finding from the analysis. The wideband characteristics of the antenna with good cross‐polarization levels, stable radiation patterns and matching performance of element makes it suitable for various EW applications in UAV systems. The optimized linear antenna array with eight elements is fabricated and tested to evaluate its suitability for broadband applications. Various antenna parameters such as reflection coefficients, bandwidth, radiation patterns are measured and compared with computed results to validate its suitability for EW applications. Miniaturization of antenna size finds the suitability of antenna to be used for smaller platforms having smaller surface similar to UAV. The wideband performance from a single antenna/array is useful for multitude applications. Some of the areas of application are shared aperture; communication support measure; SATCOM; data link; electronic support measure; radar warning receiver applications.

中文翻译：

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微型超宽带印刷偶极子阵列，用于无人机系统中的电子战应用

无人飞行器（UAV）的进步及其在军事，通信各个领域的应用使研究人员集中精力设计紧凑，宽波束，轻便的天线。在本文中，提出了一种新型的具有准菱形形状的小型化印刷偶极子天线，其阻抗带宽为113％（在6.3至23 GHz的频率范围内为2：1 VSWR以内）。在λ而言的长度和天线元件的宽度_6.5在6.5千兆赫的共振频率视为是0.347λ _6.5  ×0.369λ _6.5（16毫米×17毫米）。包含设计公式，以仔细匹配天线各部分的阻抗。制造优化元件以确认分析得出的结果。天线具有良好的交叉极化水平，稳定的辐射方向图和元件匹配性能，其宽带特性使其适用于无人机系统中的各种电子战应用。制作并测试了具有八个元件的优化线性天线阵列，以评估其在宽带应用中的适用性。测量各种天线参数，例如反射系数，带宽，辐射方向图，并将其与计算结果进行比较，以验证其适用于电子战应用。天线尺寸的小型化发现天线适用于类似于无人机的具有较小表面的较小平台。单个天线/阵列的宽带性能可用于多种应用。一些应用领域是共享光圈。沟通支持措施；卫星通信 数据链接; 电子支持措施；雷达预警接收机的应用。