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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW | 2024-06-14 10:10 |
Tokyo | Hachijomachi-shoko-kai (Primary: On-site, Secondary: Online) |
A Ka-band 15W High Efficiency GaN MMIC Power Amplifier for Wideband Multi-carrier SATCOM Keigo Nakatani, Yutaro Yamaguchi, Ko Kanaya, Akihito Hirai (Mitsubishi electric corp.) |
[more] | |
| ED, MW | 2024-01-25 14:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Study on Traps in GaN HEMTs using Low-frequency Y11 and Y22 Toshiyuki Oishi, Shiori Takada (Saga Univ.), Ken Kudara, Yutaro Yamaguchi, Shintaro Shinjo, Koji Yamanaka (Mitsubishi Electric Corp.)  ED2023-67 MW2023-159 |
[more] | ED2023-67 MW2023-159 pp.7-10 |
| COMP | 2023-12-22 10:00 |
Miyazaki | Miyazaki Univ. Machinaka Campus | Approximation Algorithms for Generalizations of Strong Connectivity Augmentation Problem Ryoma Norose, Yutaro Yamaguchi (Osaka Univ.) COMP2023-16 |
A directed graph G is said to be strongly connected if there exists a directed path between any pair of vertices in G. S... [more] | COMP2023-16 pp.1-5 |
| COMP | 2023-12-22 11:25 |
Miyazaki | Miyazaki Univ. Machinaka Campus | [Invited Talk]
Fast Algorithms for Maximum Matching Problem Yutaro Yamaguchi (Osaka Univ.) COMP2023-19 |
Initiated by Edmonds' blossom algorithm (1965), a variety of algorithms for finding a maximum matching in general graphs... [more] | COMP2023-19 p.20 |
| ED, MWPTHz | 2023-12-22 13:40 |
Miyagi | RIEC, Tohoku Univ. (Primary: On-site, Secondary: Online) |
[Invited Talk]
Device Modeling Techniques for Millimeter-wave Band GaN Amplifiers Yutaro Yamaguchi, Shintaro Shinjo (Mitsubishi Electric), Yasuyuki Miyamoto (Titech) ED2023-62 MWPTHz2023-72 |
[more] | ED2023-62 MWPTHz2023-72 pp.40-45 |
| MW | 2023-11-16 13:00 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
A Ka-band Three-Stage GaN MMIC Doherty Power Amplifier with Wideband Tee-line Doherty Network for 5G Applications Keigo Nakatani, Yutaro Yamaguchi, Ko Kanaya, Akihito Hirai (Mitsubishi Electric) MW2023-128 |
[more] | MW2023-128 pp.13-18 |
| MW | 2023-11-17 12:30 |
Okinawa | Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
A Distributed Model with a High Scaling Accuracy for Sub-THz band GaN-HEMTs Yutaro Yamaguchi, Ken Kudara, Shintaro Shinjo, Koji Yamanaka (Mitsubishi Electric Corp.), Yasuyuki Miyamoto (Titech) MW2023-142 |
[more] | MW2023-142 pp.87-91 |
| MW, AP (Joint) |
2023-09-28 10:10 |
Kochi | Kochi Castle Museum of History (Primary: On-site, Secondary: Online) |
C-Ku-band GaN MMIC Low Noise Amplifier Using Frequency Selective Parallel Feedback Circuit Ken Kudara, Jun Kamioka, Eigo Kuwata, Yutaro Yamaguchi, Yoshitaka Kamo, Shintaro Shinjo (Mitsubishi Electric) MW2023-81 |
This paper represents a C-Ku band GaN MMIC low noise amplifier (LNA) for a transmitter and receiver module. In order to ... [more] | MW2023-81 pp.7-10 |
| MW, ED | 2023-01-27 12:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Effects of GaN traps in GaN HEMTs to Low Frequency Y22 Parameters
-- Device Simulation Study -- Shogo Morokuma (Saga Univ.), Tomohiro Otsuka (Mitsubishi Electric), Toshiyuki Oishi (Saga Univ.), Yutaro Yamaguchi, Shintaro Shinjo, Koji Yamanaka (Mitsubishi Electric) ED2022-91 MW2022-150 |
GaN HEMTs are used in high frequency and power electronics applications. Advanced systems demand improvement of characte... [more] | ED2022-91 MW2022-150 pp.29-32 |
| CPM, ED, LQE | 2022-11-24 14:35 |
Aichi | Winc Aichi (Aichi Industry & Labor Center) (Primary: On-site, Secondary: Online) |
Evaluation of Fe Induced Trap in GaN HEMTs using Low-Frequency Y22 Measurement Taiki Nishida, Toshiyuki Oishi (Saga Univ.), Tomohiro Otsuka, Yutaro Yamaguchi, Shintaro Shinjo, Koji Yamanaka (Mitsubishi Elec. Corp.) ED2022-34 CPM2022-59 LQE2022-67 |
One issue in improving amplifier performance using GaN is evaluating the characteristics of traps. In this study, we eva... [more] | ED2022-34 CPM2022-59 LQE2022-67 pp.49-52 |
| ED, MW | 2022-01-27 13:40 |
Online | Online | Effects of Load Impedances at Third Order Intermodulation Tones Eigo Kuwata, Yutaro Yamaguchi, Masaomi Tsuru (Mitsubishi Electric), Johannes Benedikt (Cardiff University) ED2021-63 MW2021-105 |
This paper reports on new multitone active loadpull measurements at the specific frequencies of third order intermodulat... [more] | ED2021-63 MW2021-105 pp.7-11 |
| COMP | 2020-12-04 10:00 |
Online | Online | A Fast ZDD-Based Method for Enumerating All Solutions of Cost-Bounded Combinatorial Problems Shin-ichi Minato (Kyoto Univ.), Mutsunori Banbara (Nagoya Univ.), Takashi Horiyama (Hokkaido Univ.), Jun Kawahara (Kyoto Univ.), Ichigaku Takigawa (Hokkaido Univ.), Yutaro Yamaguchi (Kyushu Univ.) COMP2020-19 |
[more] | COMP2020-19 pp.8-15 |
| ED, MW | 2020-01-31 15:35 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Analysis of Self-heating Effect of GaN HEMTs with Buffer Traps by Low Frequency S-parameters Measurements and TCAD Simulation Tomohiro Otsuka, Yutaro Yamaguchi, Shintaro Shinjo (Mitsubishi Electric), Toshiyuki Oishi (Saga Univ.) ED2019-103 MW2019-137 |
[more] | ED2019-103 MW2019-137 p.53 |
| MW | 2019-11-14 15:10 |
Okinawa | Minami Daido Villa. Tamokuteki Koryu Center | A Ka-Band CW 15.5W 15.6% Fractional Bandwidth GaN Power Amplifier MMIC Using Wideband BPF Inter-stage Matching Network Keigo Nakatani, Yutaro Yamaguchi, Masatake Hangai, Shintaro Shinjo (MitsubishiElectric) MW2019-105 |
This paper has reported a Ka-band 15.5W power amplifier Monolithic Microwave Integrated Circuit (MMIC) using 0.15m Gall... [more] | MW2019-105 pp.29-34 |
| COMP | 2018-12-12 13:30 |
Miyagi | Tohoku University | [Invited Talk]
0/1/all CSPs, Half-Integral A-path Packing, and Linear-Time FPT Algorithms Yoichi Iwata (NII), Yutaro Yamaguchi (Osaka Univ.), Yuichi Yoshida (NII) COMP2018-35 |
0/1/all CSPs can be solved in linear time by a simple DFS called a unit propagation. We consider an optimization varian... [more] |
COMP2018-35 p.23 |
| MW | 2018-11-15 10:50 |
Nagasaki | Fukue Cultural Hall | A Ka-Band High Efficiency Doherty Power Amplifier MMIC using GaN-HEMT for 5G Application Keigo Nakatani, Yutaro Yamaguchi, Yuji Komatsuzaki, Shintaro Shinjo (Mitsubishi Electric) MW2018-94 |
[more] | MW2018-94 pp.13-18 |
| EST, MW, OPE, MWP, EMT, IEE-EMT, THz [detail] | 2018-07-19 15:25 |
Hokkaido | A Ka-band GaN Large-Signal Model Considering Trap Effect on Non-linear Capacitance by Using Transient S-parameters Measurement Yutaro Yamaguchi, Tomohiro Otsuka, Masatake Hangai, Shintaro Shinjo (Mitsubishi Electric Corp.), Toshiyuki Oishi (Saga Univ.) EMT2018-30 MW2018-45 OPE2018-33 EST2018-28 MWP2018-29 |
[more] | EMT2018-30 MW2018-45 OPE2018-33 EST2018-28 MWP2018-29 pp.125-130 |
|
| COMP | 2018-03-05 11:00 |
Osaka | Osaka Prefecture Univ. | [Invited Talk]
Stochastic Packing Integer Programs with Few Queries Takanori Maehara (RIKEN), Yutaro Yamaguchi (Osaka Univ./RIKEN) COMP2017-47 |
We consider a stochastic variant of the packing-type integer linear programming problem, which contains random variables... [more] | COMP2017-47 p.17 |
| MW, EMCJ, EST, IEE-EMC [detail] | 2017-10-20 16:40 |
Akita | Yupopo | Demonstration of Uniform Heating Distribution Control for Microwave Heating Small Reactor with Solid-State Oscillators Kazuhiro Iyomasa, Yoshifumi Kawamura, Ryota Komaru, Yutaro Yamaguchi, Keigo Nakatani, Takeshi Shiode, Koji Yamanaka, Kazutomi Mori, Hiroshi Fukumoto (Melco) EMCJ2017-58 MW2017-110 EST2017-73 |
(To be available after the conference date) [more] | EMCJ2017-58 MW2017-110 EST2017-73 pp.171-175 |
| MW, ED | 2017-01-27 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Physical model of GaN HEMT on Si including temperature dependence of RF leakage current in substrates Yutaro Yamaguchi, Shintaro Shinjo, Koji Yamanaka (Mitsubishi Electric corp.), Toshiyuki Oishi (Saga univ.) ED2016-107 MW2016-183 |
[more] | ED2016-107 MW2016-183 pp.57-62 |
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