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Enhanced 2-port MIMO antenna with composite two-step metasurface for 77 GHz vehicle-to-everything applications

Bakhshi, M ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1016/j.aeue.2024.155404
  3. Publisher: 2024
  4. Abstract:
  5. The article presents a 2-port multiple-input multiple-output (MIMO) antenna array designed for millimeter-wave band operation, specifically optimized for Vehicle-to-Everything (V2X) applications. To enhance performance, a novel approach employing two types of metasurfaces on a single plate is utilized. The first metasurface, based on a loop structure, aims to improve the frequency bandwidth, while the second metasurface, utilizing a composite right/left-handed (CRLH) design, focuses on reducing mutual coupling. These two steps result in an improved frequency bandwidth exceeding 45% and a decreased structure width of about 50% compared to other designs. Notably, the compact nature of these metasurfaces, measuring approximately 32 × 3 mm2, is a significant feature that reduces manufacturing costs. The arrayed antenna, with 20 series elements, is suitable for medium-range radar in V2X applications, although our method is generally applicable to other ranges. Additionally, the radiation pattern exhibits a 40-degree beam rotation within the frequency bandwidth, making it well-suited for V2X applications. The results demonstrate impressive diversity performance, with a consistent maximum gain of 16 dB across the entire frequency bandwidth of approximately 68 GHz to 82 GHz, representing an 18.2% coverage. © 2024 Elsevier GmbH
  6. Keywords:
  7. Antenna arrays ; Bandwidth ; Feedback control ; Microwave antennas ; Millimeter waves ; MIMO systems ; Telecommunication repeaters ; Vehicles ; Composite right-left handed ; Frequency band width ; Metasurface ; Mm-wave band ; Multiple inputs ; Multiple outputs ; Multiple-input-multiple-output ; Mutual coupling ; Two step metasurface structure ; Vehicle to Everything
  8. Source: AEU - International Journal of Electronics and Communications ; Volume 184 , 2024 ; 14348411 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S1434841124002899