Ka-Band Single-Layered, Wideband Circularly Polarized Array With Multilevel E-Plane Waveguide Sequential Rotation Network

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-13 DOI:10.1109/LAWP.2025.3579622

Zheng Liu;Yingrui Yu;Shi- Shan Qi;Wen Wu

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引用次数: 0

Abstract

In this letter, a single-layered broadband circularly polarized (CP) slot array is presented for millimeter-wave wireless applications, which is realized by sequentially rotating linearly polarized E-plane waveguide-fed slot subarrays. The presented subarray consists of four open-ended radiating cavities with surface-etched grooves to suppress the unwanted parasitic current distributions. The introduced grooves can be equalized as secondary radiation sources, thus improving the gain of the subarray and the entire CP array while suppressing the sidelobes. To realize wideband CP radiation, wideband compact multilevel E-plane waveguide sequential rotation network (SRN) is implemented. Compared with conventional multi-layered full-metal CP arrays, compact E-plane waveguide is introduced to combine the multilevel SRN and multiple radiators in the same layer while realizing a much wider axial ratio (AR) bandwidth. For demonstration, an 8 × 8 CP array with a multilevel SRN was fabricated and measured, exhibiting an impedance bandwidth of 37.62% (25.9 GHz to 37.9 GHz) and a 3 dB AR bandwidth of 43.75% (25 GHz to 39 GHz). The proposed single-layered CP array own the advantages of wideband, compact size, and high efficiency, which is a promising candidate for Ka-band wireless applications.

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带多电平e平面波导顺序旋转网络的ka波段单层宽带圆极化阵列

本文提出了一种用于毫米波无线应用的单层宽带圆极化（CP）缝隙阵列，该阵列通过顺序旋转线极化e平面波导馈电缝隙子阵列来实现。所提出的子阵列由四个带有表面蚀刻凹槽的开放式辐射腔组成，以抑制不必要的寄生电流分布。引入的凹槽可以作为二次辐射源进行均衡，从而在抑制副瓣的同时提高子阵列和整个CP阵列的增益。为了实现宽带CP辐射，实现了宽带紧凑多电平e平面波导顺序旋转网络（SRN）。与传统的多层全金属CP阵列相比，紧凑的e平面波导将多层SRN和多个辐射体组合在同一层，同时实现了更宽的轴向比（AR）带宽。为了证明这一点，制作并测量了具有多电平SRN的8 × 8 CP阵列，其阻抗带宽为37.62% (25.9 GHz ~ 37.9 GHz)， 3db AR带宽为43.75% （25 GHz ~ 39 GHz）。所提出的单层CP阵列具有宽带、体积小、效率高等优点，是ka波段无线应用的理想选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.