Circularly polarized SIW square ring‐slot antenna for X‐band applications
Circularly polarized SIW square ring‐slot antenna for X‐band applications
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DOI：
10.1002/mop.27113
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发表时间：
2012-11
影响因子：
1.5
通讯作者：
J. Lacik
中科院分区：
文献类型：
--
作者：
J. Lacik
在这封信中，提出了一种在 X 波段工作的单层圆极化基板集成波导 (SIW) 方形环槽天线。圆极化波是通过 SIW 顶壁上蚀刻的缩短方形环槽和放置在环与 SIW 底壁之间的短路通孔的组合产生的。实验结果证明，同轴电缆到SIW过渡的天线辐射右旋圆极化（RHCP）波，反射系数小于–10 dB时阻抗带宽为10.3%，AR小于3 dB时轴比（AR）带宽为2.6%，RHCP增益为8.0 dBi。所提出的天线具有传统平面结构的优点，包括薄型、重量轻和易于低成本制造。 © 2012 Wiley periodicals, Inc. Microwave Opt Technol Lett 54:2590–2594, 2012；请访问 wileyonlinelibrary.com 在线查看本文。 DOI 10.1002/mop.27113
In this letter, a single‐layer circularly polarized substrate integrated waveguide (SIW) square ring‐slot antenna operating in the X‐band is proposed.The circularly polarized wave is generated by a combination of a shortened square ring‐slot etched in the SIW top wall and a shorting via placed between the area bounded by the ring and the SIW bottom wall. Experimental results prove that the antenna with a coax‐to‐SIW transition radiates a right‐hand circularly polarized (RHCP) wave and it achieves the impedance bandwidth of 10.3% for the reflection coefficient less than –10 dB, the axial ratio (AR) bandwidth of 2.6% for AR less than 3 dB, and the RHCP gain 8.0 dBi. The proposed antenna has the advantage of conventional planar structures including low profile, light weight, and easy low cost fabrication. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2590–2594, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27113