In this paper, a compact, wideband, and high-efficiency substrate integrated waveguide (SIW) feeding cavity-backed aperture-coupled magneto-electric (ME) dipole antenna element and its array are proposed. Firstly, an SIW cavity-backed and a modified bowtie dipole are designed for the antenna element which makes it possess a high gain and wide impedance bandwidth. The antenna element covers an impedance bandwidth of 66.3% from 10.7 to 21.3 GHz with a peak gain of 10.3 dBi. Secondly, a 4 × 4 array is designed using the proposed antenna element. And a full-corporate substrate integrated waveguide feeding network is introduced to excite the array elements for the antenna application with wide bandwidth and high efficiency. For validation, a prototype of 4 × 4 array is fabricated by standard printed circuit board (PCB) facilities and further measured. The measured −10 dB impedance bandwidth of the proposed 4 × 4 antenna array is 30% (12.75–17.25 GHz) with its gain being 18.2–20.9 dBi within the entire band. The measured maximum aperture efficiency of the antenna array is 94% at 14.92 GHz. Notably, the measured results agree well with simulations, and it shows great advantages over other similar antennas on efficiency and bandwidth.

中文翻译：

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宽带和高效率SIW腔体支持的磁电偶极子天线阵列

本文提出了一种紧凑，宽带，高效的衬底集成波导（SIW）馈送腔体支持的孔耦合磁电（ME）偶极子天线元件及其阵列。首先，为天线元件设计了一个支持SIW谐振腔和改进的领结偶极子，使其具有高增益和宽阻抗带宽。天线元件在10.7至21.3 GHz范围内覆盖66.3％的阻抗带宽，峰值增益为10.3 dBi。其次，使用提出的天线元件设计4×4阵列。并引入了全基片集成波导馈电网络，以宽带宽和高效率激励天线应用的阵列元件。为了验证，通过标准印刷电路板（PCB）设施制造了4×4阵列的原型并进行了进一步测量。建议的4×4天线阵列的测量到的-10 dB阻抗带宽为30％（12.75–17.25 GHz），其增益在整个频带内为18.2–20.9 dBi。在14.92 GHz处测得的天线阵列最大孔径效率为94％。值得注意的是，测量结果与模拟结果非常吻合，并且在效率和带宽方面都显示出优于其他类似天线的巨大优势。