论文名称“Wideband High-Efficiency Circularly Polarized Transmitarray With Linearly Polarized Feed”，采用低损耗透射单元的设计方法，提出一种具有线圆转化功能的宽带高效透射阵列天线。该单元由线极化的U型微带天线和圆极化的单臂阿基米德螺旋天线组成，具有损耗低、入射角响应好等优点。采用标准PCB工艺，最终实现了0.14波长厚包含1613单元的透射阵。测试结果表明，该天线具有31.8 dBi的最大增益，对应口径效率为60.2%，以及15.2%的1dB增益带宽。作为高增益圆极化天线，其具有结构简洁、效率高、低成本等优势。工作主要完成人：郑斌，程钰间。

论文链接：https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10048535

Abstract— By using the low loss element design method, a wideband high-efficiency transmitarray antenna with the linear-to-circular-polarization transformation is presented. The element is composed of a linearly polarized U-slot patch antenna and a circularly polarized shaped single-arm Archimedean spiral antenna, and has the advantages of low insertion loss and good incident angle stability over a wide frequency band. The 0.14-λ0-thick 1613-element transmitarray is fabricated by the standard PCB technology, and presents a measured peak gain of 31.8 dBi with the corresponding aperture efficiency of 60.2%. The measured 1-dB gain bandwidth is 15.2% from 18.25 GHz to 21.25 GHz. Simple structure, high performance and low complexity make it an attractive candidate for the low-cost high-gain circularly polarized antenna.

Index Terms— Circular polarization, Archimedean spiral, transmitarray, wideband, high-efficiency.