This article focuses on the design of a transparent circularly polarized (CP) antenna subarray integrating with Cube satellite’s (CubeSat’s) solar panels. The subarray antenna employs two techniques including the Fabry–Perot cavity (FPC) and sequential rotation-feeding network. These techniques are used to generate CP along with a high level of directivity over a broad bandwidth. The main aim here is to propose a multifunctional antenna with the high radiation properties and the capability of power harvesting, simultaneously. To harvest power using a solar panel, the transparency requirement should be satisfied. Hence, the proposed design is sputtered with the thin layer of indium–tin–oxide (ITO) with a thickness of 200 nm. However, it seems to be sacrificed a large amount of conductivity at the frequency band of interest (x-band). Correspondingly, the performance of conductivity and transparency for both the materials of ITO and copper (Cu) as coated on the proposed design is determined. Alternatively, as an optically transparent conductor (OTC), a combination of both coating layers, including ITO and Cu with thicknesses of 200 and 5 nm, respectively, is applied. In the scattering point of view, the proposed design is also capable of suppressing the radar cross-section (RCS) for the space missions with the aim of space-based observations.

中文翻译：

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用于立方体卫星应用的基于太阳能电池板的光学透明子阵列天线

本文重点介绍与立方体卫星 (CubeSat) 太阳能电池板集成的透明圆极化 (CP) 天线子阵列的设计。子阵列天线采用两种技术，包括法布里-珀罗腔 (FPC) 和顺序旋转馈电网络。这些技术用于在宽带宽上生成具有高水平方向性的 CP。这里的主要目的是提出一种同时具有高辐射特性和功率收集能力的多功能天线。要使用太阳能电池板收集电力，应满足透明度要求。因此，所提出的设计是用厚度为 200 nm 的铟锡氧化物 (ITO) 薄层溅射的。然而，它似乎在感兴趣的频带（x 波段）处牺牲了大量的电导率。相应地，确定了涂覆在建议设计上的 ITO 和铜 (Cu) 材料的导电性和透明度性能。或者，作为光学透明导体 (OTC)，应用两个涂层的组合，包括厚度分别为 200 和 5 nm 的 ITO 和 Cu。从散射的角度来看，所提出的设计还能够抑制以天基观测为目的的空间任务的雷达截面（RCS）。