Graduate School of Engineering Division of Physics and Electronics 

Associate Professor  2024.04 - Now

School of Engineering Department of Physics and Electronics 

Associate Professor  2024.04 - Now

博士（情報学） （ Kyoto University ）

修士（工学） （ Kyoto University ）

学士（工学） （ Osaka City University ）

Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment  / Semiconductor device engineering

Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment  / Device fabrication process

Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment  / High-frequency device

Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment  / Millimeter-wave application

Research and development of device fabrication process with gallium oxide

Research and development of device fabrication process with gallium oxide

2024.04 - Now 

IEEE

2019 - Now   Overseas

電子情報通信学会

2010 - Now   Domestic

応用物理学会

2006 - Now   Domestic

電子情報通信学会　エレクトロニクスソサイエティ   総務幹事  

2025 - 2027 

International Conference on Solid State Devices and Materials (SSDM)   Committee member: Area 4  

2024 - Now 

電子情報通信学会　エレクトロニクスソサイエティ   研究技術会議 / 庶務財務幹事  

2023 - 2025 

International Electron Device Meeting (IEDM)   MAT: Co-Chair (2022) / PMA: Publicity Chair (2023)  

2022 - 2023 

電子情報通信学会　マイクロ波テラヘルツ光電子技術研究会   専門委員  

2020 - Now 

活動功労賞

2026.03   電子情報通信学会　エレクトロニクスソサイエティ  

Best paper award （Co-author）

2024.10   IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium  

Osaka Metropolitan University   Graduate School of Engineering Division of Physics and Electronics

2024.04 - Now

九州大学大学院   非常勤講師（客員准教授）

2022 - 2025

NTT先端集積デバイス研究所   機能材料研究部   研究主任／主任研究員

2016.07 - 2024.03

NTT Device Technology Laboratories

2016.07 - 2024.03

NTT Access Service System Laboratories   Researcher

2013.07 - 2016.06

Kyoto University   Doctor's Course   Graduated/Completed

2017.04 - 2018.03

Kyoto University   Master's Course   Graduated/Completed

2006.04 - 2008.03

Osaka City University   Bachelor's Course   Graduated/Completed

2002.04 - 2006.03

Design of high-frequency Ga₂O₃ Schottky barrier diodes for microwave wireless power transmission

Kohki Eguchi, Yudai Suehiro, Yuto Tabata, Romualdo A. Ferreyra, Takuya Tsutsumi, Yasuo Ohno, Masataka Higashiwaki

Japanese Journal of Applied Physics   64 ( 4 )   046501 - 046501   2025.04（ ISSN:00214922 ） （ eISSN:1347-4065 ）

300-GHz Band 160-Gb/s InP-HEMT Differential Front End With High LO Leakage Rejection

Hiroshi Hamada, Ibrahim Abdo, Taro Sasaki, Takuya Tsutsumi, Hiroyuki Takahashi

IEEE Journal of Solid-State Circuits   60 ( 9 )   3095 - 3110   2025（ ISSN:00189200 ） （ eISSN:1558-173X ）

300-GHz-Band Single-Balanced Resistive Mixer Module in 60-nm InP HEMT Technology with LO Leakage Suppressing Function

Jyo T.

IEEE MTT S International Microwave Symposium Digest   238 - 241   2025（ ISSN:0149645X ） （ ISBN:9798331514099 ）

Design of high-frequency Ga₂O₃ Schottky barrier diodes for microwave wireless power transmission Reviewed

Eguchi, Kohki; Suehiro, Yudai; Tabata, Yuto; Ferreyra, Romualdo; Tsutsumi, Takuya; Ohno, Yasuo; Higashiwaki, Masataka

Japanese Journal of Applied Physics   2025

Electrical properties of unintentionally doped <i>β</i>-Ga₂O₃ (010) thin films grown by a low-pressure hot-wall metalorganic chemical vapor deposition

Jun Jason Morihara, Jin Inajima, Zhenwei Wang, Junya Yoshinaga, Shota Sato, Kohki Eguchi, Takuya Tsutsumi, Yoshinao Kumagai, Masataka Higashiwaki

Japanese Journal of Applied Physics   63 ( 8 )   080901 - 080901   2024.08（ ISSN:00214922 ） （ eISSN:1347-4065 ）

マイクロ波無線電力伝送用レクテナ回路応用に向けた高周波Ga2O3ショットキーバリアダイオード開発 Domestic conference

田端 悠大，末廣 雄大，Romualdo A. Ferreyra，堤 卓也，金野 舜，臼井 洸佑， 松尾 大輔，伊庭 義騎，寺内 悠真，吉永 純也，熊谷 義直，大野 泰夫，東脇 正高

第73回応用物理学会春季学術講演会  2026.03  応用物理学会

300-GHz Band Fully Differential InP-HEMT Wireless Front End Achieving 160-Gb/s 43-m Data Transmission Invited

Hiroshi Hamada, Ibrahim Abdo, Taro Sasaki, Takuya Tsutsumi, Hiroyuki Takahashi

Asia-Pacific Microwave Conference (APMC)  2025.12 

300-GHz 160-Gb/s InP-HEMT Wireless Front-End With Fully Differential Architecture

Hiroshi Hamada, Ibrahim Abdo, Takuya Tsutsumi, Hiroyuki Takahashi

IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium  2025.10 

320-GHz InP-HEMT Low Noise Amplifier with Modified Ridge Coupler

Ibrahim Abdo, Hiroshi Hamada, Teruo Jyo, Takuya Tsutsumi, Tarou Sasaki, Hiroyuki Takahashi

European Microwave Week (EuMC)  2025.09 

300-GHz-Band SingleBalanced Resistive Mixer Module in 60-nm InP HEMT Technology with LO Leakage Suppressing Function

T. Jyo, H. Hamada, T. Tsutsumi, D. Kitayama, I. Abdo, M. Nagatani, H. Takahashi

International Microwave Symposium (IMS)  2025.06 

Field-effect transistor and method for manufacturing the same

Takuya Tsutsumi, Hideaki Matsuzaki

次世代省エネ型デバイス関連技術の開発・実証事業

ICT重点技術の研究開発プロジェクト  次世代省エネ型デバイス関連技術の開発・実証事業  2024.04

電子物理工学卒業研究B（電子物性）

2025   Intensive lecture   Undergraduate

電子物理工学実験2（電子物性）

2025   Weekly class   Undergraduate

集積回路デバイス

2025   Weekly class   Undergraduate

電子物理系特別演習第2（電子物性）

2025   Intensive lecture   Graduate school

電子物理系特別研究第2（電子物性）

2025   Intensive lecture   Graduate school

Integrated circuit device

工学研究の最先端（夏季集中，オムニバス担当）

電子物理工学実験II

高周波デバイス特論

電子物理工学実験I

工学FDセミナー参加  2025

工学FDセミナー参加  2024

2025

Number of instructed the graduation thesis：1 

2024

Number of instructed the graduation thesis：2  Number of graduation thesis reviews：0

[Number of instructed the Master's Program] (previous term)：0  [Number of instructed the Master's Program] (letter term)：0

[Number of master's thesis reviews] (chief)：0  [Number of master's thesis reviews] (vice-chief)：0

[Number of doctoral thesis reviews] (chief)：0  [Number of doctoral thesis reviews] (vice-chief)：0

大阪府立生野高等学校 スーパーサイエンスハイスクール（SSH）物理探求

Role(s)： Consultant

2024.04 - 2024.09

大阪府立生野高等学校　SSH物理探求（前期）

Category：Engineering (machinery, electronics / physics, electrical / electronics, electrical information, chemical biotechnology, architecture, cities (civil engineering / environment), material chemistry, aerospace, marine systems, applied chemistry, chemistry, materials)