This letter presents a high-gain 32 × 32-element full corporate-feed array antenna using a simplified assembly of only two split blocks. This is made possible by a new feeding configuration which eliminates the cavity-backed layer used in conventional designs. E-plane T-junctions, as well as the single-ridge waveguide output structure, are used in the full corporate-feed network to reduce its size. This helps to realize the one-to-one corresponding excitation between the output port of the feed network and the radiation slots. In addition, a transition structure from single-ridge waveguide to double-ridge waveguide is employed to improve the impedance matching bandwidth of the radiation part. For demonstration, a prototype is designed, fabricated, and measured. Experimental results show that the array antenna achieves an impedance bandwidth of 19% (71–86 GHz) with input reflection coefficient better than −13 dB, the antenna efficiency of over 76.4%, and peak gain of better than 38.4 dBi over the entire operating band.

中文翻译：

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E波段全企业馈电32×32缝隙阵列天线，简化了组装

这封信提出了一种高增益的32×32元素全企业馈电阵列天线，它仅使用了两个分离块的简化组件。通过消除传统设计中使用的背腔层的新进料配置，可以做到这一点。E平面T形结以及单脊形波导输出结构用于完整的公司馈电网络中，以减小其尺寸。这有助于在馈电网络的输出端口和辐射槽之间实现一对一的对应激励。另外，采用从单脊波导到双脊波导的过渡结构来提高辐射部分的阻抗匹配带宽。为了演示，设计，制造和测量了原型。