In this paper, a leaky wave antenna is presented based on the substrate integrated waveguide structure. The proposed antenna has a periodic structure with a combination of rectangular and H-shaped slots on the top of the antenna. By providing this new design for slots, a better angular scanning achieved rather than the previous designs from broadside to end-fire, so that with this design, the leaky wave antenna can scan from 2.5 to 87° by changing the feeding frequency, which is the highest scanning angle relative to the design of uniform rectangular slots, the butterfly shaped slots and the H-shaped slots. The proposed antenna was designed to have circular polarization in the entire operating frequency range.

中文翻译：

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圆极化基片集成波导漏波天线及改进扫描角

本文提出了一种基于基片集成波导结构的漏波天线。所提出的天线具有周期性结构，天线顶部有矩形和 H 形槽的组合。通过为缝隙提供这种新设计，实现了比以前从宽边到端射的设计更好的角度扫描，因此通过这种设计，漏波天线可以通过改变馈电频率从 2.5°扫描到 87°，即相对于均匀矩形槽、蝶形槽和H形槽设计的最高扫描角度。建议的天线设计为在整个工作频率范围内具有圆极化。