Wide-Scanning-Angle Leaky-Wave Array Antenna Based on Microstrip SSPPs-TL
Wide-Scanning-Angle Leaky-Wave Array Antenna Based on Microstrip SSPPs-TL
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DOI：
10.1109/lawp.2018.2855178
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发表时间：
2018-07
影响因子：
4.2
通讯作者：
D. Wei;Jianying Li;Jiangjun Yang;Y. Qi;Guangwei Yang
中科院分区：
文献类型：
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作者：
D. Wei;Jianying Li;Jiangjun Yang;Y. Qi;Guangwei Yang
提出了一种基于微带欺骗表面等离子体激元传输线的宽扫描角漏波天线。双导体SSPPs-TL作为天线的导波结构，由一个两边开槽的波纹带和一个接地面组成。一组金属柱以交错的方式沿着SSPP-TL的两侧将波纹带连接到接地平面，其将SSPP转换为辐射波。功率分配器是两个天线阵列的馈电网络。天线的扫描区域主要由沟槽深度控制，沟槽深度与天线的色散有很强的关系。在5 ~ 7 GHz的工作频带内，天线波束扫描范围从−30° ~ 51°（包括宽边），实现增益从15.9 dBi ~ 19.4 dBi不等。制作了样机并进行了测试，验证了设计理论和仿真结果。
In this letter, a wide-scanning-angle leaky-wave antenna (LWA) based on a microstrip spoof surface plasmon polaritons (SSPPs) transmission line (TL) is proposed. The dual-conductor SSPPs-TL as the guiding-wave structure of the proposed antenna consists of a two-edged grooved corrugated strip and a ground plane. A set of metallic posts connect the corrugated strip to the ground plane along two sides of the SSPPs-TL in a staggered way, which converts SSPPs to radiation waves. A power divider is the feeding network for two antenna arrays. The scanning region is mainly controlled by the depth of the groove, which has strong relationship with the dispersion of the antenna. Over the operating band from 5 to 7 GHz, the beam of the proposed antenna scans widely from −30° to 51° (including the broadside) with the realized gain varying from 15.9 to 19.4 dBi. A prototype is fabricated and measured, which confirms the design theory and the simulation results.