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IEICE Trans

Naoya OKAMOTO

High-Efficiency 250-320GHz Power Amplifiers Using InP-Based Metal-Oxide-Semiconductor High-Electron-Mobility Transistors
Yusuke KUMAZAKI Shiro OZAKI Naoya OKAMOTO Naoki HARA Yasuhiro NAKASHA Masaru SATO Toshihiro OHKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2023/11/01
Vol. E106-C  No. 11  pp. 661-668
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
power amplifiers, high-electron-mobility transistor, terahertz, beyond 5G, 6G, 
 Summary | Full Text:PDF
Uniform/Selective Heating Microwave Oven Using High Efficiency GaN-on-GaN HEMT Power Amplifier
Masaru SATO Yusuke KUMAZAKI Naoya OKAMOTO Toshihiro OHKI Naoko KURAHASHI Masato NISHIMORI Atsushi YAMADA Junji KOTANI Naoki HARA Keiji WATANABE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2023/10/01
Vol. E106-C  No. 10  pp. 605-613
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
free-standing GaN substrate, microwave heater, 
 Summary | Full Text:PDF
Recent Progress on High Output Power, High Frequency and Wide Bandwidth GaN Power Amplifiers
Masaru SATO Yoshitaka NIIDA Atsushi YAMADA Junji KOTANI Shiro OZAKI Toshihiro OHKI Naoya OKAMOTO Norikazu NAKAMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2021/10/01
Vol. E104-C  No. 10  pp. 480-487
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
GaN power amplifier, InAlGaN/GaN HEMT, millimeter-wave, power amplifier, transmission line transformer, wide bandwidth, 
 Summary | Full Text:PDF
Characterization and Modeling of a GaAsSb/InGaAs Backward Diode on the Basis of S-Parameter Measurement Up to 67 GHz
Shinpei YAMASHITA Michihiko SUHARA Kenichi KAWAGUCHI Tsuyoshi TAKAHASHI Masaru SATO Naoya OKAMOTO Kiyoto ASAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2019/06/01
Vol. E102-C  No. 6  pp. 462-465
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
backward diodes, GaAsSb/InGaAs, equivalent circuit, voltage sensitivity, 
 Summary | Full Text:PDF
Millimeter-Wave GaN HEMT for Power Amplifier Applications
Kazukiyo JOSHIN Kozo MAKIYAMA Shiro OZAKI Toshihiro OHKI Naoya OKAMOTO Yoshitaka NIIDA Masaru SATO Satoshi MASUDA Keiji WATANABE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 923-929
Type of Manuscript:  INVITED PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
GaN HEMT, Millimeter-wave, Power amplifier, Device modeling, 
 Summary | Full Text:PDF