Submillimeter-Wave Tunable Filters Utilizing Solid-State Plasma

2019 Fiscal Year Final Research Report

• Project/Area Number: 17K05723
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: Akita University
• Principal Investigator: Yodokawa Shinichi 秋田大学, 理工学研究科, 講師 (90282160)
• Co-Investigator(Kenkyū-buntansha): 倉林 徹 秋田大学, 理工学研究科, 教授 (90195537)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: サブミリ波 / 固体プラズマ / 特性可変フィルタ / テラヘルツ波 / InSb / 伝搬特性

Outline of Final Research Achievements

Propagation characteristics of 500 GHz submillimeter-wave frequency range in a cavity resonator loaded with a thin slab of n-InSb as a solid-state plasma are investigated on the basis of classical theory and by simulation using the finite-difference time-domain (FDTD) method, and their dependences on the magnetic field strength and the plasma density were studied. It was clearly shown that, with an appropriate combination of parameters, this configuration acts as an electrically controllable submillimeter-wave filter.

Free Research Field

電磁波工学

Academic Significance and Societal Importance of the Research Achievements

サブミリ波は，次々世代さらにはその先の通信技術で利用が期待されているが，基本技術の開発は立ち遅れている。その一つにフィルタが挙げられるが，簡単な構造の特性可変のフィルタは，将来のサブミリ波やテラヘルツ波帯の多くの応用装置の発展に寄与することが期待できる。