A novel low-profile substrate integrated waveguide (SIW) cavity-backed slot antenna with an enhanced gain is proposed. By etching four parallel transverse slots at the edges of the hexagonal SIW cavity as the radiating elements, higher resonance mode of quasi-TM ₃₁₀ can be excited to achieve gain enhancement. A fabricated prototype with a size of 1.3 λ ₀ × 1.3 λ ₀ × 0.025 λ ₀ has been measured. Results show that the proposed design achieves a 10-dB impedance matching bandwidth of 195 MHz and a maximum boresight gain of 10.74 dBi. The proposed antenna exhibits a high front-to-back ratio and low cross-polarisation level. It still retains the advantages of low cost, ease of fabrication, and easy integration with planar circuits, making it a good candidate for low-cost mass-production.

中文翻译：

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通过使用quasi-TM ₃₁₀模式增强增益的薄型六角形SIW腔缝隙天线

提出了一种新型的低剖面衬底集成波导（SIW）腔背隙缝隙天线，具有增强的增益。通过在六边形SIW腔的边缘蚀刻四个平行的横向缝隙作为辐射元件，可以激发quasi-TM _310的更高共振模式 以实现增益增强。尺寸为1.3的预制原型λ ₀ ×1.3λ ₀ ×0.025λ 已测量₀。结果表明，所提出的设计实现了195 MHz的10 dB阻抗匹配带宽和10.74 dBi的最大视轴增益。所提出的天线展现出高的前后比率和低的交叉极化水平。它仍然保留了低成本，易于制造以及易于与平面电路集成的优点，使其成为低成本批量生产的理想选择。