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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Design of broadband circularly polarized metasurface antenna array with gain enhancement
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Design of broadband circularly polarized metasurface antenna array with gain enhancement

机译：增益增强宽带圆偏振质元面天线阵列的设计

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摘要

In this paper, a broadband right-hand-circular polarization metasurfaceantenna array is designed to satisfy the specific satellite-based installation platform.The slot coupling patch antenna is employed as element to construct the4 × 4 array and narrow beam can be obtained by this way. The gain and performanceof the antenna array are improved by adding the metasurface parasiticpatch patches. By employing the H-shape slot coupling feed structurearranged in T-shape and broadband 90° phase shifter, the antenna can achievethe broadband circularly polarized characteristics. And by utilizing Wilkinsonpower divider, broad impedance bandwidth can be obtained. The simulatedresults indicate that the S_(11) of the antenna array is below 10 dB in the operatingband from 6.4 to 13.9 GHz (73.9%), the AR bandwidth is from 7 to13.3 GHz (62.1%). And the gain is more than 15.4 dB in the X-band with thepeak gain 19.7dBi at 11.3 GHz. The antenna array is fabricated to validate thedesign. The measured results and simulated results agree well, broadbandbandwidth, circularly polarized, narrow beam, and low profile are achieved.The operating band of the array covers the whole X-band which is suitable forthe actual satellite-based antenna applications.
机译：本文中，宽带右手圆偏振质金属表面天线阵列旨在满足特定的基于卫星的安装平台。插槽耦合贴片天线用作构造的元素通过这种方式可以获得4×4阵列和窄光束。增益和表现通过添加Metasurface Parasitic来改善天线阵列补丁补丁。通过采用H形槽耦合馈电结构以T形和宽带90°移位器排列，天线可以实现宽带圆极化特征。并利用威尔金森功率分频器，可以获得宽阻抗带宽。模拟结果表明，天线阵列的S_（11）在操作中低于10 dB频段从6.4到13.9 GHz（73.9％），AR带宽为7至13.3 GHz（62.1％）。 X波段的增益超过15.4 dB高峰增益19.7dbi为11.3 GHz。制造天线阵列以验证设计。测量结果和模拟结果同意，宽带达到带宽，圆偏振，窄光束和低轮廓。阵列的操作带覆盖了适合于的整个X波段实际的基于卫星的天线应用。

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