mmWave self-beam-tilting antenna array with low complexity and wide coverageopen access
- Authors
- Kim, Ye-Bon; Cho, Junhyuk; Lee, Han Lim
- Issue Date
- Aug-2023
- Publisher
- Elsevier B.V.
- Keywords
- Antenna array; Beamforming antenna; Compact antenna; High gain antenna; mmWave antenna; Switched antenna array
- Citation
- Alexandria Engineering Journal, v.76, pp 323 - 332
- Pages
- 10
- Journal Title
- Alexandria Engineering Journal
- Volume
- 76
- Start Page
- 323
- End Page
- 332
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67661
- DOI
- 10.1016/j.aej.2023.06.006
- ISSN
- 1110-0168
2090-2670
- Abstract
- This paper proposes an effective planar mmWave switched beamforming antenna array with low complexity and wide beam coverage. The proposed structure is configured using multiple linearly polarized self-beam-tilting-antenna (SBTA) elements, eliminating the requirement of a phase-adjustable block for beamforming. Each SBTA element can generate different main beam directions by itself without using complicated feed networks. Moreover, unlike typical Butler matrix-based beamforming arrays, the proposed SBTA array does not require passive hybrid couplers to adjust the phases for beamforming operations. Accordingly, the proposed feed network-less antenna avoids circuit complexity, feed network insertion losses, or increases in size and fabrication costs, rendering it suitable for mmWave compact antenna applications. To verify the proposed concept and beamforming performance, a 1 × 4 SBTA array was fabricated at 28 GHz using a conventional printed circuit board (PCB) process. The size of the fabricated antenna (excluding test connectors) was 1.12 λ0 × 1.68 λ0 × 0.08 λ0 (λ0 for free-space wavelength), and the measured 10-dB impedance bandwidth was approximately 5.9 %. Furthermore, the measured main beam switching directions were found at −34°, −52°, +51°, and +38° with measured gains of 6.7, 6.1, 5.9, and 6.6 dBi, respectively, at 28 GHz.
- Files in This Item
-
- Appears in
Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67661)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.