论文名称：Ultrawideband and Dual-Polarized 1-D Phased-Array Antenna With Reused Structure for Low Profile and High Radiation Efficiency。

本文针对一维双极化相控阵天线因截断效应导致的带宽受限问题，提出了一种基于结构复用技术的高效率边界条件重构方法。天线由水平极化复用缝隙天线（RSA）和垂直极化折叠偶极子组成，通过将RSA作为理想电导体壁重构边界，有效抑制了截断效应，提升了垂直极化带宽。RSA采用鱼骨形缝隙设计，在0.11倍低频波长的低剖面约束下实现了5:1的阻抗带宽，覆盖0.4–2 GHz，辐射效率超过64%。加工制造了1×8双极化阵列原型，测试结果显示其在垂直极化扫描45°、水平极化扫描60°范围内，有源驻波比均低于3.4，且交叉极化比优于19 dB。该设计具有结构紧凑、低剖面与高效率的特点，适用于机翼等狭窄平台的多功能射频系统集成。

工作主要完成人：黄文龙，程钰间。

论文链接：https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11082459

Abstract—A dual-polarized 1-D phased-array antenna with a low profile and high radiation efficiency is proposed in this work. Attaining wideband performance with high radiation efficiency is a considerably more arduous undertaking for a dual-polarized 1-D array antenna in comparison to a dual-polarized 2-D array antenna. This is primarily attributed to the significant truncation effect observed in one of the polarizations within the 1-D configuration. To address this issue, a lossless boundary condition reconstruction method based on the structure reuse technique is proposed. The array is composed of horizontal polarization (HP) reused slot antennas (RSAs) and vertical polarization (VP) dipoles. It reuses the HP RSAs as perfect electric conductor (PEC) walls, positioned perpendicularly to the VP dipoles, to mitigate the truncation effect and thereby improve the VP bandwidth. Furthermore, slits are introduced into the RSAs to achieve a 5:1 impedance bandwidth under low-profile constraints, while the dipoles are folded to enhance the impedance-matching performance. Experiment results demonstrate that the antenna achieves 5:1 impedance bandwidth coverage from 0.4 to 2 GHz with active VSWR <3.4 and radiation efficiency over 64% while scanning up to 45° for VP and 60° for HP, respectively. The profile is only 0.11λ_low at the lowest operating frequency of 0.4 GHz.

Index Terms—1-D array antenna, dual-polarized, high radiation efficiency, low profile, ultrawideband.