Novel designs of planar aperture antenna (PAA) arrays are proposed in this article, which achieve dual-polarized and high-gain performances in the 60 GHz unlicensed band. In order to achieve high gain, the original PAA is expanded to its two-dimensional array form, and the two linear polarizations share the same apertures. The two polarizations are realized by using orthogonal coupling slots excited by substrate-integrated waveguide (SIW) power dividers below. Two array prototypes with $8 \times 8$ and $16 \times 16$ radiation cells are designed and manufactured based on low-temperature co-fired ceramic (LTCC) technology for ease of integration. The simulated results show that the two antennas have −10 dB impedance bandwidth and 3 dB gain bandwidth of 57.5–65 and 57–64 GHz, respectively, with stable, no-squint, and symmetrical beams in band, which is verified by measurements. Compared with other reported high-gain and dual-polarized millimeter-wave antennas, the proposed antennas feature a low-profile, simple structure while keeping high aperture efficiency. The proposed antennas are very suitable for integration and are promising in 60 GHz short-range communication applications.

中文翻译：

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基于LTCC的60GHz双极化高增益平面孔径天线阵列

本文提出了平面孔径天线 (PAA) 阵列的新颖设计，可在 60 GHz 免许可频段内实现双极化和高增益性能。为了获得高增益，将原来的PAA扩展为二维阵列形式，两个线偏振共用相同的孔径。这两种偏振是通过使用由下面的基板集成波导 (SIW) 功率分配器激发的正交耦合槽来实现的。两个数组原型 $8 \times 8$ 和 $16 \times 16$ 辐射电池是基于低温共烧陶瓷 (LTCC) 技术设计和制造的，易于集成。仿真结果表明，两种天线分别具有-10 dB阻抗带宽和3 dB增益带宽，分别为57.5-65和57-64 GHz，带内波束稳定、无斜视、对称，经测量验证。与其他报道的高增益和双极化毫米波天线相比，所提出的天线具有低剖面、结构简单、孔径效率高的特点。所提出的天线非常适合集成，并且在 60 GHz 短距离通信应用中很有前景。