He Wei, Hong Jun, Ren Yongmei, Deng Yuanxiang, Wang Xiaohu, Fang Xiaoyong
Institute of Human Factors and Safety Engineering, Hunan Institute of Technology, Hengyang 421002, China.
School of Electrical Information Engineering, Hunan Institute of Technology, Hengyang 421002, China.
Sensors (Basel). 2024 Sep 24;24(19):6175. doi: 10.3390/s24196175.
An air-filled substrate-integrated waveguide (AF-SIW) circularly polarized (CP) 1 × 8 mm wave antenna array is presented for fifth-generation (5G) applications. The presented slot antenna array consists of three layers of PCB and one layer of aluminum, which serve as the AF-SIW feeding network and the metal cavity radiation element, respectively. The CP characteristic is achieved by the use of an -shaped aluminum radiation cavity on the top of the AF-SIW feeding network. The air-filled substrate-integrated waveguide technique is unitized to achieve high radiation efficiency. A wide input impedance bandwidth of 18.4% is obtained for the proposed antenna scheme, ranging from 34.5 GHz to 41.5 GHz, with a peak gain of 18 dBic. As for CP characteristic, the proposed antenna possesses a wide 3 dB axial ratio (AR) bandwidth, which is 16.4% (36.5 GHz to 43 GHz). The antenna scheme is fabricated and measured to verify the potential application as well as the promising performance. The measured results of the 1 × 8 antenna array shows that the wide AR as well as the input impedance are simultaneously achieved, which coincide well with the simulated results. Also, the measured results indicate that the proposed antenna scheme might be a good candidate for future mobile applications.
本文提出了一种用于第五代（5G）应用的空气填充基片集成波导（AF-SIW）圆极化（CP）1×8毫米波天线阵列。所提出的缝隙天线阵列由三层印刷电路板（PCB）和一层铝组成，分别用作AF-SIW馈电网络和金属腔辐射元件。通过在AF-SIW馈电网络顶部使用一个 - 形铝辐射腔来实现圆极化特性。采用空气填充基片集成波导技术以实现高辐射效率。所提出的天线方案获得了18.4%的宽输入阻抗带宽，范围从34.5吉赫兹到41.5吉赫兹，峰值增益为18分贝全向辐射功率（dBic）。至于圆极化特性，所提出的天线具有宽的3分贝轴比（AR）带宽，为16.4%（36.5吉赫兹到43吉赫兹）。制作并测量了该天线方案，以验证其潜在应用和良好性能。1×8天线阵列的测量结果表明，同时实现了宽轴比和输入阻抗，这与模拟结果吻合良好。此外，测量结果表明所提出的天线方案可能是未来移动应用的一个良好候选方案。
