| 新型光子带隙宽带双极化微带天线设计 |
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| 引用本文： | 袁宏伟. 新型光子带隙宽带双极化微带天线设计[J]. 电子器件, 2013, 36(2) |
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| 作者姓名： | 袁宏伟 |
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| 作者单位： | 中国电子科技集团公司第54研究所北京研发中心 |
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| 摘 要： | 设计了一种基于光子带隙（PBG）高阻表面的宽带双极化微带天线。将PBG高阻表面地板应用到设计的缝隙耦合微带天线上，实现了C波段阻抗带宽为22%（VSWR<2）的宽带双极化天线单元。仿真结果表明，与加金属地板的情况相比较，设计得到的PBG高阻表面在减缩剖面的同时，改善了天线的阻抗带宽、增益、端口隔离度和交叉极化，其中端口隔离度最大可以提高约8dB、轴向交叉极化可以提高约4dB。
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| 关 键 词： | 微带天线；光子带隙；宽带双极化；极化隔离度；交叉极化 |
A novel PBG wideband dual-polarized microstrip antenna design |
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| Abstract: | A wideband dual-polarized microstrip antenna based on PBG high resistance surface structure has been designed. The PBG structure is applied to a gap-coupling microstrip antenna to realize a bandwidth of 22% for the C-band. The simulation results show that the PBG high resistance surface structure plays an important role in reducing the profile and improving the impedance bandwidth and gain of the antenna as well as improving the polarization isolation and cross polarization effectively compared with the metal ground. The polarization isolation and cross polarization can be improved by 8dB and 4dB respectively in the bandwidth range. |
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