Tan Zhen, Zhao Yun, Ding Jiangqiao
School of Electronic & Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Micromachines (Basel). 2023 Oct 19;14(10):1947. doi: 10.3390/mi14101947.
This paper presents a waveguide-slot antenna to generate a radiation beam with high gain fed by a low-loss feeding network at 110 GHz. The proposed antenna consists of a compact eight-way power divider and a waveguide-slot array. The eight-way power divider provides equal-amplitude and alternative-phase excitation for the slot array, and each of them supports two waveguides. The integral structure is implemented by two layers with a channeled substratum and a slotted superstratum. To verify the proposed slot array, the designed array is fabricated with computer numerical control (CNC) milling and measured. The measured peak gain of the designed antenna is 32 dBi at 110 GHz. The proposed antenna with a simple structure provides a promising solution to develop high gain antenna in upper millimeter-wave and sub-terahertz (THz) applications.
本文提出了一种波导缝隙天线，用于在110GHz频率下由低损耗馈电网络馈电产生高增益辐射波束。所提出的天线由一个紧凑的八路功率分配器和一个波导缝隙阵列组成。八路功率分配器为缝隙阵列提供等幅且交替相位的激励，并且它们每个都支持两个波导。整体结构由两层实现，一层是带通道的底层，另一层是开缝的上层。为了验证所提出的缝隙阵列，采用计算机数控（CNC）铣削加工并测量了设计的阵列。所设计天线在110GHz频率下测得的峰值增益为32dBi。所提出的天线结构简单，为在毫米波频段和太赫兹（THz）应用中开发高增益天线提供了一个有前景的解决方案。
