A Holographic Antenna Based on Surface Wave Launcher
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摘要: 文中选取半带地介质的半开放导波结构对TM模式表面波发射器进行改进, 仿真分析其产生的表面波场。基于改进的表面波发射器, 设计相应的全息调制表面, 进而实现了一款基于表面波发射器的全息天线, 之后对所设计的表面波发射器和全息表面波天线进行傅里叶分析, 验证了理论设计的正确性。Abstract: In this paper, a semi-open waveguide structure of a half-band ground medium was selected to improve the design of the TM-mode surface wave launcher(SWL), and the surface wave field generated by this SWL was simulated and analyzed. Based on the improved SWL, a corresponding holographic modulation surface was designed, enabling the design of a holographic surface wave antenna based on the SWL. Fourier analysis was then performed on both the designed SWL and the holographic surface wave antenna to verify the correctness of the theoretical design.
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图 1 全息表面波天线结构组成示意图
Figure 1. Structure composition of holographic surface wave antenna
图 4 yz平面电场幅度随x位置变化
Figure 4. The amplitude of the yz plane electric field varies with the x position
图 5 环形条带全息表面波天线结构图
Figure 5. Structure diagram of a ring strip holographic surface wave antenna
图 7 MATLAB提取天线介质表面电场分布
Figure 7. The electric field distribution on the surface of antenna media was extracted by MATLAB
图 8 不同d值下电场相位数据提取及FFT分析
Figure 8. Electric field phase data extraction and FFT analysis under different d values
表 1 SWL尺寸
Table 1. Geometrical size of SWL
单位: mm L1 L2 L3 Lr Lt W1 s 4.72 5.65 1.125 3.9 1.7 0.5 0.25 W2 W3 W4 W5 W6 d1 d2 0.2 0.25 0.25 0.25 0.25 0.6 0.25 
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