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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 25  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SR 2024-05-20
12:05
Kagoshima Yokacenter (Kagoshima)
(Primary: On-site, Secondary: Online)
Compact Parallelization of Bandpass Delta-Sigma Modulator
Takashi Maehata (SEI), Noriharu Suematsu (Tohoku University)
 [more]
SeMI, RCS, RCC, NS, SR
(Joint)
2023-07-12
12:40
Osaka Osaka University Nakanoshima Center + Online
(Primary: On-site, Secondary: Online)
Novel digital-to-analog converter immune to asymmetric transition waveform distortion in bandpass delta-sigma modulators
Takashi Maehata (SEI), Mizuki Motoyoshi (Shizuoka Institute of Science and Technology), Noriharu Suematsu (Tohoku University) SR2023-26
In 5G and next-generation mobile communication systems, to achieve High-speed communication, massive multiple-input and ... [more] SR2023-26
pp.1-6
MW 2023-06-22
14:25
Kanagawa Yugawara-machi Shou-Kou-Kai Bldg.
(Primary: On-site, Secondary: Online)
A Suitable for S-LMBA Consideration of wideband harmonic tuning circuit
Hirotaka Asami, Takashi Sumiyoshi, Hiroshi Yamamoto, Takashi Maehata (SEI) MW2023-22
In next-generation mobile communications, broadband modulation signals are used to achieve high-capacity and high-speed ... [more] MW2023-22
pp.13-18
MW 2022-12-15
15:25
Mie Jingu-Kaikan(Ise)
(Primary: On-site, Secondary: Online)
Two-Power-Level Impedance Match for Out-phasing Amplifier
Takashi Maehata, Takashi Sumiyoshi (SEI), Ren Furumoto, Kenjiro Nishikawa (Kagoshima University) MW2022-136
The outphasing amplifier (OPA) has been attracting attention as an amplifier that achieves high efficiency from saturate... [more] MW2022-136
pp.27-32
SR 2022-05-12
10:30
Tokyo NICT Koganei
(Primary: On-site, Secondary: Online)
Parallelization and Time Division Multiplexing for 1-bit Bandpass Delta-Sigma Modulator
Takashi Maehata (SEI), Noriharu Suematsu (Tohoku University) SR2022-5
The 1-bit bandpass delta-sigma modulator (1-bit BP-DSM) outputs RF signals directly from the digital part without using ... [more] SR2022-5
pp.19-26
HCGSYMPO
(2nd)
2021-12-15
- 2021-12-17
Online Online Work analysis in production lines using geospatial intelligence technologies
Takeshi Kurata (AIST), Munenori Harada, Katsuko T. Nakahira (Nagaoka University of Technology), Takashi Maehata (Tohoku University), Yoshinori Ito, Hideki Aso (JPS)
In this paper, we report on a case study of work analysis using geospatial intelligence technology conducted on a manufa... [more]
SR 2021-11-04
09:55
Online Online Wideband Single-bit Bandpass Delta Sigma Modulator
Takashi Maehata (SEI), Noriharu Suematsu (Tohoku University) SR2021-42
In 5G and next-generation mobile communication systems, to achieve high-speed communication, massive multiple-input and ... [more] SR2021-42
pp.9-16
RCS 2020-10-23
13:10
Online Online [Invited Lecture] Sensor Data Fusion for Indoor Positioning System
Takashi Maehata, Hidehiko Hashimoto (SEI), Takeshi Kurata (AIST) RCS2020-106
In order to improve the operation rate of the equipment in factory, it is very important to understand the status of equ... [more] RCS2020-106
pp.75-79
RCS, SR, SRW
(Joint)
2020-03-04
10:50
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
Integrated Indoor Positioning System using Solar-Powered BLE beacon and PDR
Takashi Maehata, Naohiro Tada, Hidehiko Hashimoto, Takeshi Kurata (SEI) SR2019-115
Visualization of worker and equipment status in the factory is very important to improve equipment utilization rate. Ind... [more] SR2019-115
pp.9-16
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
10:00
Osaka I-Site Nanba(Osaka) A Study on Self-Interference Suppression in Digital RF Front End
Takashi Maehata (SEI), Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku University) SR2019-30
 [more] SR2019-30
pp.65-71
HCGSYMPO
(2nd)

Mie Sinfonia Technology Hibiki Hall Ise A study of self-customizable visualization systems for production sites
Hidehiko Hashimoto, Takashi Maehata, Takeshi Kurata (SEI)
At production sites, many visualization systems have been utilized. However, it has been reported that it is difficult f... [more]
SR 2018-05-25
10:00
Tokyo Tokyo big sight [Invited Talk] Digital Radio Frequency Technologies for Next Generation Wireless Communication Systems
Takashi Maehata (Sumitomo Electric Industries), Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) SR2018-11
 [more] SR2018-11
pp.63-70
NS, ASN, RCC, RCS, SR
(Joint)
2017-07-19
09:40
Hokkaido Hokkaido Univ. Distortion Compensation Method with Asymmetric Waveform Consideration in Concurrent Dual-band 1-bit Bandpass Delta-Sigma Modulator
Takashi Maehata (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku Uni.) SR2017-26
 [more] SR2017-26
pp.15-21
SR 2016-10-28
16:10
Osaka Osaka Univ. Nakanoshima Center [Invited Talk] Research and Development of Digital Radio Frequency Technology
Takashi Maehata (SEI), Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Uni.) SR2016-77
We propose the digital RF front end to consist of 1-bit digital RF transmitter and direct RF undersampling receiver. Thi... [more] SR2016-77
pp.127-134
RCC, ASN, RCS, NS, SR
(Joint)
2015-07-29
15:00
Nagano JA Naganoken Bldg. Compensation for Nonlinear Intersymbol Interference of 1-bit Bandpass Delta-Sigma Modulation
Takashi Maehata (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku University) SR2015-17
 [more] SR2015-17
pp.7-11
AP 2015-02-19
13:45
Hyogo Chusho-kigyou center at Amagasaki-City [Invited Lecture] Capacity of MIMO systems with Single Base Station Antenna
Eiji Mochida, Takashi Maehata (Sumitomo Electric) AP2014-193
Recently, operators are facing enormous traffic demand by explosive growth of smartphones. Multiple-input/multiple-outpu... [more] AP2014-193
pp.37-41
SAT, RCS
(Joint)
2014-08-19
13:00
Kochi Kochi City Cultura-Plaza CUL-PORT Digitally Enhanced Harmonic Transmitter of 1-bit Bandpass ΔΣ Modulator
Takashi Maehata (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku University) SAT2014-27
 [more] SAT2014-27
pp.11-14
SR 2014-05-22
12:45
Kanagawa Toshiba Education & Training Institute [Technology Exhibit] Concurrent Multi-Carrier Transmitter using 1-bit Band-Pass Delta Sigma Modulator
Takashi Maehata (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku University)
 [more]
SR 2014-05-23
13:45
Kanagawa Toshiba Education & Training Institute Estimation method for an asymmetric waveform in 1-bit digital RF transmitter
Takashi Maehata (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku University) SR2014-16
The output of 1-bit digital radio frequency (1-bit DRF) transmitter, using a bandpass delta sigma modulator, ideally has... [more] SR2014-16
pp.103-109
SR 2013-05-23
13:25
Hiroshima ASTER PLAZA (Hiroshima City) Principal Technology Development for 1-bit Digital RF Transmitter
Takashi Maehata, Kazuyuki Totani (SEI), Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) SR2013-2
 [more] SR2013-2
pp.9-15
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