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IEICE Trans

Yutaro YAMAGUCHI

An FPT Algorithm for the Exact Matching Problem and NP-Hardness of Related Problems
Hitoshi MURAKAMI Yutaro YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2025/03/01
Vol. E108-D  No. 3  pp. 214-220
Type of Manuscript:  Special Section PAPER (Special Section on Foundations of Computer Science —Mathematical Foundations of Computer Science and Its Applications—)
Category: 
Keyword: 
exact matching problem, fixed-parameter tractability, alternating cycles, parity constraint, 
 Summary | Full Text:PDF
A Review of GaN MMIC Power Amplifier Technologies for Millimeter-Wave Applications
Keigo NAKATANI Yutaro YAMAGUCHI Takuma TORII Masaomi TSURU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2022/10/01
Vol. E105-C  No. 10  pp. 433-440
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
GaN, SATCOM, 5G, high power amplifier, MMIC, Doherty amplifier, millimeter wave, 
 Summary | Full Text:PDF
An O(n2)-Time Algorithm for Computing a Max-Min 3-Dispersion on a Point Set in Convex Position
Yasuaki KOBAYASHI Shin-ichi NAKANO Kei UCHIZAWA Takeaki UNO Yutaro YAMAGUCHI Katsuhisa YAMANAKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2022/03/01
Vol. E105-D  No. 3  pp. 503-507
Type of Manuscript:  Special Section PAPER (Special Section on Foundations of Computer Science - New Trends of Theory of Computation and Algorithm -)
Category: 
Keyword: 
dispersion problem, facility location, 
 Summary | Full Text:PDF
Overview and Prospects of High Power Amplifier Technology Trend for 5G and beyond 5G Base Stations
Koji YAMANAKA Shintaro SHINJO Yuji KOMATSUZAKI Shuichi SAKATA Keigo NAKATANI Yutaro YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2021/10/01
Vol. E104-C  No. 10  pp. 526-533
Type of Manuscript:  INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
5G, beyond 5G, high power amplifier, base-station, Doherty amplifier, digital power amplifier, 
 Summary | Full Text:PDF
GaN Amplifiers of Selectable Output Power Function with Semi-Custom Matching Networks
Yutaro YAMAGUCHI Masatake HANGAI Shintaro SHINJO Takaaki YOSHIOKA Naoki KOSAKA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2019/10/01
Vol. E102-C  No. 10  pp. 682-690
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
gallium nitride, high power amplifiers, S-band, broadband amplifiers, impedance matching tuning, 
 Summary | Full Text:PDF
Fabrication of InP/InGaAs SHBT on Si Substrate by Using Transferred Substrate Process
Yutaro YAMAGUCHI Takeshi SAGAI Yasuyuki MIYAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/08/01
Vol. E95-C  No. 8  pp. 1323-1326
Type of Manuscript:  BRIEF PAPER
Category: III-V High-Speed Devices and Circuits
Keyword: 
heterojunction bipolar transistor, InP, base-collector capacitance, transferred-substrate, heterogeneous integration, 
 Summary | Full Text:PDF