A W-Band Choke-Ring Encircled Focal Plane Array of Full-Metal Elements for Reflector Antennas With Over 50%-Efficiency High Crossover Beams

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-09-10 DOI:10.1109/LAWP.2024.3458182

Viktor S. Chernikov;Artem R. Vilenskiy;Sam Agneessens;Lars Manholm;Marianna V. Ivashina

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引用次数: 0

Abstract

This letter presents a novel W-band [(92 to 96) GHz] focal plane array (FPA) for 50 dBi reflector antennas intended for the next-generation point-to-point communication links with antenna mast sway compensation. The FPA comprises seven metal waveguide elements arranged in a hexagonal lattice, ensuring the crossover level of the corresponding reflector beams above

$-\text{6}$

dB. The primary challenge of this design is to realize efficient illumination of the reflector for the on-axis and off-axis beams, while keeping a minimum beamforming complexity (i.e., one element per beam) and overcoming array implementation challenges associated with high frequencies. This is accomplished by a high decoupling level of the FPA elements (

$< -\text{24}$

dB) and shaping their individual element patterns via a dedicated aperture pin structure between them, and encircling the FPA aperture with a periodically perforated choke ring pair to further improve the illumination by offset elements. The FPA performance, evaluated on an offset parabolic reflector with

$F/D=0.35$

, exhibits 52%–68% efficiency, close beam overlap, and good impedance matching. Measurements of the FPA prototype verify the results for all characteristics; the latter are competitive with state-of-the-art solutions.

查看原文本刊更多论文

用于反射天线的 W 波段扼流圈环绕焦平面阵列全金属元件，具有超过 50% 效率的高交叉波束

本文介绍了一种用于50 dBi反射天线的新型w波段[(92至96)GHz]焦平面阵列（FPA），用于具有天线杆摆动补偿的下一代点对点通信链路。FPA由七个金属波导元件组成，排列成六角形晶格，确保相应反射光束的交叉电平高于$- $ text{6}$ dB。该设计的主要挑战是实现对轴和离轴光束反射器的有效照明，同时保持最小的波束形成复杂性（即每个波束一个元件），并克服与高频相关的阵列实现挑战。这是通过FPA元件的高解耦水平($<；-\text{24}$ dB)，并通过它们之间的专用孔径引脚结构塑造它们的单个元件图案，并用周期性穿孔扼流圈对包围FPA孔径，以进一步提高偏移元件的照明。在F/D=0.35的偏置抛物面反射器上，FPA性能表现出52%-68%的效率、紧密的波束重叠和良好的阻抗匹配。FPA原型的测量验证了所有特性的结果；后者与最先进的解决方案具有竞争力。

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.