2026-02-17 東北大学
図1. 従来のビーム走査システムと提案システムとの違い
＜関連情報＞
- https://www.tohoku.ac.jp/japanese/2026/02/press20260216-04-Gear.html
- https://www.tohoku.ac.jp/japanese/newimg/pressimg/tohokuuniv-press20260216_04web_Gear.pdf
- https://ieeexplore.ieee.org/document/11395461
磁気ギアを用いた機械的パターン再構成可能な八木・宇田モノポールアンテナ Mechanically Pattern Reconfigurable Yagi-Uda Monopole Antenna Using Magnetic Gear
Keisuke Konno; Satoshi Yoshida; Sho Muroga; Nozomi Haga; Jerdvisanop Chakarothai; Qiang Chen,…
IEEE Transactions on Antennas and Propagation Published:12 February 2026
DOI:https://doi.org/10.1109/TAP.2026.3662161
Abstract
In this paper, a novel mechanically reconfigurable Yagi-Uda monopole antenna using magnetic gear is proposed. The proposed antenna is composed of a folded monopole element and floating inverse T-shaped director/reflector elements. As the floating inverse T-shaped director/reflector elements rotate, main beam direction of the proposed antenna scans. A magnetic gear is introduced to rotate the floating inverse T-shaped director/ reflector elements in a mechanically contactless manner. Owing to the magnetic gear, the proposed antenna is free from mechanical connection between antenna elements and actuators. A prototype of the proposed antenna is designed at 2.5 GHz band and is fabricated including a mechanical control system for the magnetic gear. Finally, radiation performance and reconfigurability of the proposed antenna are clarified numerically and experimentally.
