Development of Reconfigurable RF Switch Based on Metamaterials

• Project/Area Number: 17K06407
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: SALESIAN POLYTECHNIC
• Principal Investigator: Mizutani Hiroshi サレジオ工業高等専門学校, その他部局等, 教授 (10589914)
• Co-Investigator(Kenkyū-buntansha): 本城 和彦 電気通信大学, 先端ワイヤレス・コミュニケーション研究センター, 客員教授 (90334573)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: スイッチ / GaN / MMIC / リコンフィギュラブル / ５G / コグニティブ無線 / CRLH / 5G / マイクロ波 / メタマテリアル / RFスイッチ / 電子デバイス・機器

Outline of Final Research Achievements

In this study, a novel key technology was proposed for realizing Cognitive Radio with a low cost, which is called a two-dimensional change-over switch. By using the active metamaterial technique, both the time domain switching and the frequency domain switching are available. GaN MMIC introducing this technique demonstrated the basic circuit operation. Furthermore, to improve the frequency switching range, a novel active reflector technology was proposed and a reconfigurable switch GaN MMIC was successfully demonstrated. The circuit theory of two-dimensional change-over switch was constructed. The initial goal of this study has been achieved.

Academic Significance and Societal Importance of the Research Achievements

IoT（Internet of Things）および5G（第5世代）無線通信で問題となっている周波数の逼迫を解決するため、最適な周波数を自動選択する「コグニティブ無線」技術の実用化が期待されている。本研究からなるリコンフィギュラブルRFスイッチ回路技術を創出・実証・理論化することは、周波数軸と時間軸の切り替え機能を持つ素子を１素子で安価に実現できる点で、逼迫する周波数帯域を自在に切り替えてコグニティブ無線を安価に実現する重要な技術開発であり、本研究の成果はコグニティブ無線の実用化加速の技術的な引き金となることが期待される。

Research Products

• [Journal Article] Small-signal design consideration for two-dimensional change-over switch GaN MMICs (2020)
  • Author(s): Mizutani Hiroshi、Ishikawa Ryo、Honjo Kazuhiko
  • Journal Title: Japanese Journal of Applied Physics Volume: 59 Issue: SG Pages: SGGL07-SGGL07
  • DOI: 10.35848/1347-4065/ab70a4
  • Peer Reviewed
• [Presentation] 900 MHz/4.5 GHz帯2×2次元切替スイッチの開発 (2020)
  • Author(s): 石井 岳人、中丸靖崇、水谷 浩、石川 亮、本城和彦
  • Organizer: 電子情報通信学会総合大会
• [Presentation] A Novel Sub-6-GHz and 28-GHz GaN Switchable Diplexer MMIC for Carrier Aggregation with Massive MIMO Full Duplex Link (2019)
  • Author(s): H.Mizutani, R.Ishikawa, and K.Honjo
  • Organizer: 2019 Asia-Pacific Microwave Conference (APMC)
  • Int'l Joint Research
• [Presentation] Proposal of a Novel SPDT Switch and Duplexer Dual-Function Circuit (2019)
  • Author(s): H.Mizutani, R.Ishikawa, and K.Honjo
  • Organizer: Extended Abstracts of the 2019 International Conference on Solid State Devices and Materials
  • Int'l Joint Research
• [Presentation] A Novel Reconfigurable GaN Filter MMIC with Active Reflector (2018)
  • Author(s): H.Mizutani, R.Ishikawa, and K.Honjo
  • Organizer: 2018 Asia-Pacific Microwave Conference (APMC)
  • Int'l Joint Research
• [Presentation] 多機能SPDTデバイスの提案 (2018)
  • Author(s): 水谷 浩、本城和彦
  • Organizer: 電子情報通信学会ソサイエティ大会
• [Presentation] 多機能SPDTデバイスの実証 (2018)
  • Author(s): 中丸靖崇、水谷 浩、瀬下拓也、石川 亮、本城和彦
  • Organizer: 電子情報通信学会ソサイエティ大会
• [Presentation] FETとバラクタダイオードを用いた新たなリコンフィギュラブルフィルタ回路の提案 (2018)
  • Author(s): 中丸靖崇、水谷 浩、瀬下拓也
  • Organizer: 電子情報通信学会総合大会
• [Presentation] A Novel Two-Dimensional Changeover GaN MMIC Switch for Electrically Selectable SPDT Multifunctional Device (2017)
  • Author(s): Hiroshi Mizutani, Ryo Ishikawa, and Kazuhiko Honjo
  • Organizer: 2017 IEEE Compund Semiconductor Integrated Circuit Symposium
  • Int'l Joint Research
• [Presentation] 複数のFETを用いた新たなアクティブCRLH伝送線路の提案 (2017)
  • Author(s): 瀬下拓也、中丸靖崇、水谷 浩
  • Organizer: 電子情報通信学会ソサイエティ大会