Liu Liang, Yang Yu, Yu Chuan, Li Shifeng, Wu Hao, Sun Limin, Meng Fanbao
Science and Technology on High Power Microwave Laboratory, Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China.
Micromachines (Basel). 2022 Jun 24;13(7):986. doi: 10.3390/mi13070986.
A W-band slot array antenna based on a substrate integrated waveguide (SIW) for microwave power transmission (MPT) is proposed in this paper. By size optimization, the transition from the rectifier element to the antenna is limited to a small size. It realizes a compact arrangement of the radiating slots, which not only improves the aperture efficiency of the antenna but also makes it easy to integrate into a large-scale array. For antenna testing, a coplanar waveguide-SIW-rectangular waveguide transition structure is added at the end of the antenna, and an antenna with this transition structure is processed by PCB printing technology and measured. The measured reflection coefficient is less than -10 dB at 90-96 GHz, the aperture efficiency is greater than 60% at 93.5-94.5 GHz, the maximum gain is 13.2 dB at 93.5 GHz, and the aperture efficiency is 79%. The test results of the antenna show that the antenna has a good performance and can be applied to the MPT system as a rectenna.
本文提出了一种基于基片集成波导（SIW）的W波段缝隙阵列天线，用于微波功率传输（MPT）。通过尺寸优化，整流元件到天线的过渡被限制在小尺寸范围内。它实现了辐射缝隙的紧凑排列，这不仅提高了天线的口径效率，而且便于集成到大规模阵列中。为了进行天线测试，在天线末端添加了共面波导-SIW-矩形波导过渡结构，并通过PCB印刷技术加工并测量了具有这种过渡结构的天线。在90-96GHz频段，实测反射系数小于-10dB，在93.5-94.5GHz频段，口径效率大于60%，在93.5GHz时最大增益为13.2dB，口径效率为79%。天线的测试结果表明，该天线具有良好的性能，可作为整流天线应用于MPT系统。
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