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KUMAZAKI, Yusuke
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1

High-power and efficiency W-band InAlGaN/AlN/GaN high-elect..:

Kumazaki, Yusuke ; Ozaki, Shiro ; Nakasha, Yasuhiro...
Applied Physics Express.  , 2024
Link: https://doi.org/10.35848..
 
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2

Uniform/Selective Heating Microwave Oven Using High Efficie..:

SATO, Masaru ; KUMAZAKI, Yusuke ; OKAMOTO, Naoya...
IEICE Transactions on Electronics.  E106.C (2023)  10 - p. 605-613 , 2023
Link: https://doi.org/10.1587/..
 
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3

Effect of oxidant sources on carbon-related impurities in A..:

Ozaki, Shiro ; Kumazaki, Yusuke ; Okamoto, Naoya...
Applied Physics Express.  , 2023
Link: https://doi.org/10.35848..
 
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4

A Waveguide Antenna Array Module with Controlled Element Pi..:

, In: 2023 IEEE Conference on Antenna Measurements and Applications (CAMA),
Ozaki, Shiro ; Okamoto, Naoya ; Hirano, Takuichi... - p. 281-284 , 2023
Link: https://doi.org/10.1109/..
 
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5

High-Efficiency 250-320GHz Power Amplifiers Using InP-Based..:

KUMAZAKI, Yusuke ; OZAKI, Shiro ; OKAMOTO, Naoya...
IEICE Transactions on Electronics.  E106.C (2023)  11 - p. 661-668 , 2023
Link: https://doi.org/10.1587/..
 
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6

Improved f T/f max in wide bias range by steam-annealed ult..:

Ozaki, Shiro ; Kumazaki, Yusuke ; Okamoto, Naoya..
Applied Physics Express.  15 (2022)  4 - p. 041001 , 2022
Link: https://doi.org/10.35848..
 
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7

Low-Resistance and Low-Thermal-Budget Ohmic Contact by Intr..:

Kumazaki, Yusuke ; Ozaki, Shiro ; Okamoto, Naoya..
IEEE Transactions on Electron Devices.  69 (2022)  6 - p. 3073-3078 , 2022
Link: https://doi.org/10.1109/..
 
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8

High-Efficiency 250–320 GHz Power Amplifiers Using InP-base..:

, In: 2022 Asia-Pacific Microwave Conference (APMC),
Kumazaki, Yusuke ; Ozaki, Shiro ; Okamoto, Naoya... - p. 276-278 , 2022
Link: https://doi.org/10.23919..
 
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9

First demonstration of X-band AlGaN/GaN high electron mobil..:

Ozaki, Shiro ; Yaita, Junya ; Yamada, Atsushi...
Applied Physics Express.  14 (2021)  4 - p. 041004 , 2021
Link: https://doi.org/10.35848..
 
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10

Over 80% power-added-efficiency GaN high-electron-mobility ..:

Kumazaki, Yusuke ; Ohki, Toshihiro ; Kotani, Junji...
Applied Physics Express.  14 (2020)  1 - p. 016502 , 2020
Link: https://doi.org/10.35848..
 
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11

Thermally stable and low trap density SiNx/AlON bi-layer st..:

Kamada, Yoichi ; Ozaki, Shiro ; Yaita, Junya...
Japanese Journal of Applied Physics.  59 (2020)  4 - p. 046505 , 2020
Link: https://doi.org/10.35848..
 
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12

Remarkable Current Collapse Suppression in GaN HEMTs on Fre..:

, In: 2019 IEEE BiCMOS and Compound semiconductor Integrated Circuits and Technology Symposium (BCICTS),
Kumazaki, Yusuke ; Watanabe, Keiji ; Ohki, Toshihiro... - p. 1-4 , 2019
Link: https://doi.org/10.1109/..
 
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13

Precise Structural Control of GaN Porous Nanostructures Uti..:

Kumazaki, Yusuke ; Matsumoto, Satoru ; Sato, Taketomo
Journal of The Electrochemical Society.  164 (2017)  7 - p. H477-H483 , 2017
Link: https://doi.org/10.1149/..
 
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14

Precise thickness control in recess etching of AlGaN/GaN he..:

Kumazaki, Yusuke ; Uemura, Keisuke ; Sato, Taketomo.
Journal of Applied Physics.  121 (2017)  18 - p. , 2017
Link: https://doi.org/10.1063/..
 
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15

Formation of GaN porous structures with improved structural..:

Kumazaki, Yusuke ; Yatabe, Zenji ; Sato, Taketomo
Japanese Journal of Applied Physics.  55 (2016)  4S - p. 04EJ12 , 2016
Link: https://doi.org/10.7567/..
 
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