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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Broadband substrate-integrated waveguide-fed endfire metasurface antenna array with gain enhancement
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Broadband substrate-integrated waveguide-fed endfire metasurface antenna array with gain enhancement

机译：具有增益增强的宽带基板集成波导馈电EndFire Metasurface天线阵列

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摘要

A broadband substrate-integrated waveguide (SIW)-fed endfire metasurface antenna array with improved gain centralisation radiation pattern is proposed in this paper. The metasurface is composed of 3 × 3 rectangular patches distributed on both the upper and lower sides of a single-layer substrate. For wideband endfire radiation, an open-end SIW on the metasurface side feeds the antenna. To improve front to back radiation and ration matching characteristics, one C-shaped slot is etched on the top surface of SIW. Two L-shaped metal walls composed of metalized via holes are employed to centralize radiation pattern and reduce both the side lobe and back lobe levels. In addition, the gain of the antenna is enhanced more than 1.6 dBi. To validate this design, a 1 × 8 uniform excitation array is proposed and fabricated, containing three SIW T junctions and four Y junctions. The whole dimension is 7.33λ_0× 3.82λ0 × 0.06λ_0. Measurement results imply that an 7.5 to 13.05 GHz (54%) impedance bandwidth can be achieved with the maximum gain of 14.9 dBi.
机译：本文提出了一种具有改进的增益集中辐射图案的宽带基板集成的波导（SiW）的硬盘状元表面天线阵列。 Metasurface由3×3矩形贴片组成，分布在单层基板的上侧和下侧。对于宽带终止辐射，元表面侧的开口SIW馈送天线。为了改善前后辐射和配给特性，在SiW的顶表面上蚀刻一个C形槽。使用由金属化通孔组成的两个L形金属壁，用于集中辐射图案并减少侧瓣和后瓣水平。此外，天线的增益增强超过1.6 dBi。为了验证这种设计，提出了1×8均匀的激励阵列，并制造，包含三个SiW T结和四个Y结。整个尺寸为7.33λ_0×3.82λ0×0.06λ_0。测量结果意味着可以通过最大增益为14.9 dBi来实现7.5至13.05GHz（54％）阻抗带宽。

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