Shuji ABIKO’s scientific contributions

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Publications (1)

Fig. 1. (color online). W-Band TWT.
Fig. 6. (color online). SEM image of the FWG using LIGA Process.
Fig. 8 に試作した 300 GHz 帯 TWT の周波数特性を示 す 8～10) 。これは，カソードと FWG 間の電位差 EFWG を 12.5 ～ 14.0 kV の範囲で変化させながら周波数に対する 利得を測定したものである。EFWG を下げると利得の最 大値は周波数の高い方へシフトし，利得が得られる周波 数帯域は次第に拡がる。これは，EFWG を変化させたこ とで電子ビームの速度が変化し，電子ビームと同期する 周波数が変化するためである。 Fig. 8 で 利 得 が 最 大 となるのは 265 GHz で + 15 dB （EFWG ＝14 kV）であった。しかし，この TWT を 290 GHz
Fig. 8. (color online). Small-signal gain curve mesured at different FWG voltages (Pulsed voltage).
Fig. 9. (color online). SEM image of the modified FWG.

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Development of a 300 GHz Band TWT Using MEMS TechnologyMEMS技術を使用した300 GHz帯進行波管の開発
  • Article
  • Full-text available

June 2022

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Vacuum and Surface Science

Akihiko KASAHARA

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Yoshihiro KAJIKAWA

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Shuji ABIKO

The communication capacity of the 5th generation (5G) is not enough communication traffic which increases to practical use service using 5G. Therefore terahertz band (THz-band) wireless communications that can communicate with large capacity is in demand in “Beyond 5G”. The traveling wave tube (TWT) with the folded wave guide slow-wave structure is the most promising THz-band device. We are developing a 300 GHz TWT and this paper presents the development status of a 300 GHz-band TWT. Fullsize Image

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