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3D FSS polarizer for millimeter-wave antenna applications

机译：适用于毫米波天线应用的3D FSS偏振器

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摘要

In this article, a novel wideband polarizer is presented, to convert the linear polarization of a directive antenna into circular polarization. This innovative polarizer is based on a 3D frequency selective surface (FSS) and consists of an array of 4x4 metal axial-mode helices. The proposed broadband polarizer operates in the 28 to 31 GHz frequency band. To demonstrate the principle, the 3D FSS is applied to a linearly polarized Yagi-Uda antenna operating in the same millimeter-wave frequency band. The measured and simulated results, by integrating the proposed 3D polarizer in front of the antenna, show that an axial ratio smaller than 3 dB is obtained over a wide bandwidth with gain enhancement.
机译：在本文中，提出了一种新颖的宽带极化器，它将定向天线的线性极化转换为圆形极化。这款创新的偏振器基于3D频率选择表面（FSS），由4x4金属轴向模式螺旋阵列组成。拟议的宽带偏振器在28至31 GHz频带内工作。为了说明该原理，将3D FSS应用于在相同毫米波频段内工作的线性极化八木-宇田天线。通过在天线前集成拟议的3D偏振器，测量和仿真结果表明，在宽带宽上获得了增益小于3 dB的轴向比。

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