平面Luneburg透镜和波导超表面吸收体的波达方向估计

IF 3.4 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Access Pub Date : 2023-01-01 DOI:10.1109/ACCESS.2023.3252092

Aya Ohmae;Satoshi Yagitani

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引用次数: 0

摘要

已知使用阵列天线的到达方向（DOA）估计具有高分辨率。然而，这些算法需要高计算资源。本文提出了一种独特的DOA估计系统，使用平面Luneburg透镜和波导元表面吸收体，无需复杂的算法。平面Luneburg透镜由带有波导的3D打印凸透镜组成，该波导将来自不同方向的入射电磁波分离，并将其聚焦在凸透镜侧面的不同点。超表面吸收体具有蘑菇形结构，设计为紧凑的2D传感器阵列，放置在透镜的焦点处。关于入射电磁波的强度和角度的信息可以从传感器元件的功率和位置获得。这个紧凑而简单的系统在几秒钟内测量入射波的DOA，而无需复杂的计算。该系统的角分辨率为2.2–2.4度（取决于传感器位置），在5.65 GHz频带内，最大估计误差在2.4度以内。

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Direction-of-Arrival Estimation With Planar Luneburg Lens and Waveguide Metasurface Absorber

Direction of arrival (DOA) estimation using array antennas is known to have high resolution. However, these algorithms require high computational resources. This paper proposes a unique DOA estimation system without a sophisticated algorithm, using a planar Luneburg lens and a waveguide metasurface absorber. The planar Luneburg lens consists of a 3D-printed convex lens with a waveguide, which separates incoming electromagnetic waves from different directions and focuses them at different points on the sides of the convex lens. The metasurface absorber has a mushroom-shaped structure designed as a compact 2D sensor array, which is placed at the focal point of the lens. Information regarding the intensity and angle of the incident electromagnetic wave can be obtained from the power and position of the sensor element. This compact and simple system measures the DOA of an incoming wave in seconds without complicated calculations. The angular resolution of the system is 2.2–2.4 degrees (depending on the sensor position), and the maximum estimation error is within 2.4 degrees in the 5.65 GHz frequency band.

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来源期刊

IEEE Access COMPUTER SCIENCE, INFORMATION SYSTEMSENGIN-ENGINEERING, ELECTRICAL & ELECTRONIC

CiteScore

9.80

自引率

7.70%

发文量

6673

审稿时长

6 weeks

期刊介绍： IEEE Access® is a multidisciplinary, open access (OA), applications-oriented, all-electronic archival journal that continuously presents the results of original research or development across all of IEEE''s fields of interest. IEEE Access will publish articles that are of high interest to readers, original, technically correct, and clearly presented. Supported by author publication charges (APC), its hallmarks are a rapid peer review and publication process with open access to all readers. Unlike IEEE''s traditional Transactions or Journals, reviews are "binary", in that reviewers will either Accept or Reject an article in the form it is submitted in order to achieve rapid turnaround. Especially encouraged are submissions on: Multidisciplinary topics, or applications-oriented articles and negative results that do not fit within the scope of IEEE''s traditional journals. Practical articles discussing new experiments or measurement techniques, interesting solutions to engineering. Development of new or improved fabrication or manufacturing techniques. Reviews or survey articles of new or evolving fields oriented to assist others in understanding the new area.