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Committee Date Time Place Paper Title / Authors Abstract Paper #
CAS, MSS, IPSJ-AL [detail] 2022-11-17
14:15		 Kochi
(Primary: On-site, Secondary: Online)		 Evaluation of Theoretical Formula for Inter-band Level Deviation in DAC Bandwidth Tripler
Hayato Ishii (Tokyo Univ. of Science), KeisuKeisuke Kawahara (Yokohama National Univ.), Yohtaro Umeda, koyoya Takano (Tokyo Univ. of Science) CAS2022-40 MSS2022-23		 For wider bandwidth of optical transmitter circuit, DAC Bandwidth Tripler that extends the bandwidth of broadband digita... [more] CAS2022-40 MSS2022-23
pp.19-24
ED, MW 2022-01-27
13:15		 Online Online An Inductor-Less Broadband Active Balun with Imbalance Correction and Active Peaking
Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS) ED2021-62 MW2021-104		 This paper presents an area-efficient broadband active balun with low gain error and phase error. An ideal balun has a d... [more] ED2021-62 MW2021-104
pp.1-6
MW 2021-12-16
15:15		 Kanagawa Kawasaki City Industrial Promotion Hall
(Primary: On-site, Secondary: Online)		 Analysis and Design of a Differential Distributed Amplifier with Coupled Inductors
Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS), Shinsuke Hara (NICT) MW2021-92		 This paper presents a differential distributed amplifier with coupled inductors. Broadband and multi-level signaling are... [more] MW2021-92
pp.43-48
MW 2021-05-20
14:55		 Online Online A Trial Manufacture of an Area-Efficient Distributed Amplifier Using Pseudo-Fractal Bended Transmission Lines
Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS), Shinsuke Hara (NICT) MW2021-9		 In recent years, communication traffic has been increasing. Distributed amplifiers have been reported to a bandwidth of ... [more] MW2021-9
pp.22-27
IT 2016-07-29
13:10		 Fukuoka Seminar House, Fukuoka Univ. A Consideration on Generator Matrix Structures for Space-Time Coded MIMO Radar
Keisuke Kawahara, Daisuke Umehara, Koichiro Wakasugi (KIT) IT2016-32		 We have already proposed a code construction scheme for MIMO radars based on a space-time coding and complementary codes... [more] IT2016-32
pp.63-68
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