High-Efficiency Polarizer Reflectarray Antennas for Data Transmission Links from a CubeSat
High-Efficiency Polarizer Reflectarray Antennas for Data Transmission Links from a CubeSat
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DOI：
10.3390/electronics10151802
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发表时间：
2021-08-01
期刊：
影响因子：
2.9
通讯作者：
Encinar, Jose A.
中科院分区：
文献类型：
--
作者：
Martinez-de-Rioja, Eduardo;Martinez-de-Rioja, Daniel;Encinar, Jose A.
本文提出了两种设计的高效率的极化反射阵列天线能够产生一个准直波束在双圆极化使用线极化饲料，与应用程序的高增益天线的数据传输链路从立方体卫星。首先，一个18厘米× 18厘米的偏振器反射阵列工作在17.2-22.7 GHz频段的设计，制造和测试。样机的测量结果表明，孔径效率为52.7%的右旋圆偏振（RHCP）和57.3%的左旋圆偏振（LHCP），这两个值高于以前报道的相关工作。在此基础上，首次提出了一种工作在20 GHz和30 GHz频段的双频偏振反射阵。所提出的天线技术使得能够降低在双CP中操作的馈电链的复杂性和成本，因为不再需要线性到圆极化器。这种特性，结合重量轻，平面轮廓和印刷反射阵列的低制造成本，使建议的天线很好的候选人立方体应用。
This paper presents two designs of high-efficiency polarizer reflectarray antennas able to generate a collimated beam in dual-circular polarization using a linearly polarized feed, with application to high-gain antennas for data transmission links from a Cubesat. First, an 18 cm x 18 cm polarizer reflectarray operating in the 17.2-22.7 GHz band has been designed, fabricated, and tested. The measurements of the prototype show an aperture efficiency of 52.7% for right-handed circular polarization (RHCP) and 57.3% for left-handed circular polarization (LHCP), both values higher than those previously reported in related works. Then, a dual-band polarizer reflectarray is presented for the first time, which operates in dual-CP in the frequency bands of 20 GHz and 30 GHz. The proposed antenna technology enables a reduction of the complexity and cost of the feed chain to operate in dual-CP, as a linear-to-circular polarizer is no longer required. This property, combined with the lightweight, flat profile and low fabrication cost of printed reflectarrays, makes the proposed antennas good candidates for Cubesat applications.