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mm-Wave High Gain Cavity-Backed Aperture-Coupled Patch Antenna Array

机译:MM波高增益腔压孔耦合贴片天线阵列

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摘要

A wideband and high gain cavity-backed 4 × 4 patch antenna array is proposed in this paper. Each patch antenna element of the array is enclosed by a rectangular cavity and differentially-fed by the slot underneath. By optimizing the geometry of the radiating patch and the cavity, a very uniform E-field distribution at the antenna aperture is achieved, leading to the high array aperture efficiency and thus the gain. Taking advantages of the higher-order substrate integrated cavity excitation, the elements of the array are efficiently fed with the same amplitude and phase in a simplified feeding mechanism instead of the conventional bulky and lossy power-splitter-based feeding network. Measured results show the antenna bandwidth is from 56 to 63.1-GHz (16.1%) with the peak gain reaching 21.4 dBi. The radiation patterns of the array are very stable over the entire frequency band and the cross-polarizations are as low as -30 dB. These good characteristics demonstrate that the proposed array can be a good candidate for the future 60-GHz communication system applications.
机译:一种宽频带和高增益支持的腔-4×4贴片天线阵列在本文提出。该数组的每个贴片天线元件由矩形腔包围并通过所述槽下方差动供电。通过优化辐射贴片和所述腔体的几何形状,在天线孔径非常均匀的电场分布来实现,导致高阵列孔径效率并因此增益。以高阶基板集成空腔激励的优点,所述阵列中的元素被有效地用在简化的进给机构,而不是基于功率分割器常规笨重和有损馈送网络相同的振幅和相位馈电。测量结果表明,该天线带宽是从56到63.1 GHz的(16.1%)与峰值增益达到21.4 dBi的。阵列的辐射图案是非常稳定的,在整个频带和交叉极化是低至-30分贝。这些优良特性表明,该阵列可以为未来60 GHz的通信系统应用的理想人选。

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