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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| IN, NS (Joint) |
2023-03-02 14:20 |
Okinawa | Okinawa Convention Centre + Online (Primary: On-site, Secondary: Online) |
Research on Dielectric Waveguides for Enhancing Spatial Resolution in Beyond 5G High Frequency Communications Reishi Mitani (The Univ. of Tokyo), Atsushi Fukuda, Hiroto Yamamoto, Hiroshi Okazaki, Yasunori Suzuki (NTT DOCOMO), Akihiro Nakao (The Univ. of Tokyo)  NS2022-191 |
High-frequency communications, which are used in 5G and expected to be Beyond5G, enable high-capacity communicationsbyus... [more] | NS2022-191 pp.139-144 |
| MW | 2022-03-04 09:20 |
Online | Online | A study of diode linearizer for 100 GHz amplifier toward 6G Sumire Aoki, Hiroshi Hamada, Hiroto Yamamoto, Atsushi Fukuda (NTT DOCOMO), Jyo Teruo, Hiroyuki Takahashi (NTT), Hiroshi Okazaki, Yasunori Suzuki (NTT DOCOMO) MW2021-129 |
Sub-THz band (frequency range above 100 GHz) are gathering attention to implement 6G high-speed wireless communications.... [more] | MW2021-129 pp.100-104 |
| MW | 2021-11-19 13:55 |
Kagoshima | Kagoshima University (Primary: On-site, Secondary: Online) |
A Study on Coverage Extension by a Leaky Dielectric Waveguide with Dielectric Pieces Attached Hiroto Yamamoto, Atsushi Fukuda, Hiroshi Okazaki, Yasunori Suzuki (NTT DOCOMO) MW2021-81 |
This paper presents an experimental study of coverage extension by a leaky dielectric waveguide that leaks radio waves f... [more] | MW2021-81 pp.81-85 |
| SRW | 2021-06-21 13:10 |
Online | Online | [Short Paper]
Experimental Evaluation of Wireless Sensing using 5G System Tomoki Murakami, Shinya Ohtsuki (NTT), Yutaka Musaka, Atsushi Fukuda (NTTドコモ) SRW2021-8 |
[more] | SRW2021-8 p.38 |
| MW, ICD | 2019-03-14 15:40 |
Okinawa | Wide dynamic range rectifier circuit with varactor tuning technique Ayako Suzuki, Koshi Hamano, Hayato Shimizu (Kagoshima Univ.), Hiroshi Okazaki, Kunihiro Kawai, Atsushi Fukuda, Yasunori Suzuki (NTT DOCOMO), Kenjiro Nishikawa (Kagoshima Univ.) MW2018-166 ICD2018-110 |
[more] | MW2018-166 ICD2018-110 pp.55-59 |
|
| QIT (2nd) |
2017-11-16 13:50 |
Saitama | Saitama University | [Poster Presentation]
The realization of silicon-vacancy centers in nanodiamonds Yusuke Iwabata, Atsushi Fukuda, Hideaki Takashima (Kyoto Univ.), Andreas W. Schell (ICFO), Hiroshi Abe, Shinobu Onoda, Takeshi Ohshima (QST), Shigeki Takeuchi (Kyoto Univ.) |
Color centers in diamond have merged as versatile tools for quantum information, quantum metrology and bio-sensing. Rece... [more] | |
| AP, MW (Joint) |
2017-09-21 14:00 |
Saitama | Saitama University | High Frequency Analog Beam Forming by Frequency Control of Local Oscillator Atsushi Fukuda, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2017-68 |
This paper proposes a novel configuration for a phased array antenna system (PAS) that achieves ultra-broadband transmis... [more] | MW2017-68 pp.1-4 |
| AP, MW (Joint) |
2017-09-22 15:15 |
Saitama | Saitama University | A relation between polarization and radiation characteristics of flexible dielectirc wavguide Kunihiro Kawai, Atsushi Fukuda, Hiroshi Okazaki, Takahiro Asai, Akira Yamada (NTT DOCOMO) MW2017-78 |
This paper presents radiation characteristics of bended flexible dielectric waveguides when the millimeter wave signal p... [more] | MW2017-78 pp.59-62 |
| AP, MW (Joint) |
2016-09-15 14:50 |
Ibaraki | AIST | Radiation characteristics of bended flexible dielectric waveguide for area formation of millimeter-wave wireless communication systems Kunihiro Kawai, Atsushi Fukuda, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2016-77 |
This paper presents radiation characteristics of two bended flexible dielectric waveguides in millimeter wave frequencie... [more] | MW2016-77 pp.23-26 |
| QIT (2nd) |
2016-05-30 13:00 |
Kochi | Kochi University of Technology Eikokuji campus | [Poster Presentation]
Towards Improving Quality Factor of NanoFiber Bragg Grating Cavity Atsushi Fukuda (Kyoto Univ.), Yasuko Oe (Kyoto Univ./Osaka Univ.), Andreas W Schell, Hideaki Takashima, Shigeki Takeuchi (Kyoto Univ.) |
[more] | |
| MW, AP (Joint) |
2015-09-17 10:30 |
Tochigi | Oyama National College of Tech. | An estimation of third order PIM using one continuous wave Kunihiro Kawai, Atsushi Fukuda, Yuta Takagi, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2015-87 |
This paper presents an estimation method for a third order passive intermodulation distortion (PIM) using one continuous... [more] | MW2015-87 pp.1-8 |
| MW, AP (Joint) |
2015-09-17 13:55 |
Tochigi | Oyama National College of Tech. | [Invited Lecture]
RF front-end configuration of Massive-MIMO base station Yasunori Suzuki, Kei Satoh, Makoto Sumi, Atsushi Fukuda, Shoichi Narahashi (NTT DOCOMO) AP2015-83 MW2015-90 |
This paper presents an overview of requirements and technical issues regarding a RF front-end module for Massive-MIMO ba... [more] | AP2015-83 MW2015-90 pp.21-25(AP), pp.19-23(MW) |
| SR | 2012-05-24 17:15 |
Kanagawa | Keio univ. at Hiyoshi | [Panel Discussion]
Multi-band operation for mobile terminals Shoichi Narahashi, Hiroshi Okazaki, Atsushi Fukuda, Takayuki Furuta, Kunihiro Kawai, Kei Satoh, Yuta Takagi (NTT DOCOMO) SR2012-12 |
It is a key issue for radio frequency (RF) circuits of future mobile terminals to equip with multi-band operation archit... [more] | SR2012-12 pp.73-78 |
| SR | 2011-07-28 15:05 |
Kanagawa | YRP | [Technology Exhibit]
A Reconfigurable Power Amplifier for Multi-band/Multi-mode Mobile Terminals Takayuki Furuta, Atsushi Fukuda, Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) SR2011-23 |
[more] | SR2011-23 pp.37-40 |
| MW | 2010-12-17 09:50 |
Ishikawa | Kanazawa Inst. of Tech. | Multi-band Power Amplifier on an LTCC Substrate Takayuki Furuta, Atsushi Fukuda, Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2010-130 |
[more] | MW2010-130 pp.47-50 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-05 10:55 |
Kanagawa | YRP | Multi-band RF circuits for mobile terminals Shoichi Narahashi, Hiroshi Okazaki, Atsushi Fukuda, Kunihiro Kawai, Takayuki Furuta (NTT DOCOMO) SR2008-106 |
Future mobile terminals will be operated in a wireless environment where various kinds of wireless systems will co-exist... [more] | SR2008-106 pp.117-120 |
| SR | 2008-08-01 10:00 |
Tokyo | NICT (Koganei,-city Tokyo) | [Technology Exhibit]
Reconfigurable RF Front End
-- A Multiband Power Amplifier -- Atsushi Fukuda, Hiroshi Okazaki, Shoichi Narahashi (NTT DoCoMo) SR2008-34 |
Future mobile terminals will operate in the wireless environment where the variety of wireless systems coexist and inter... [more] | SR2008-34 pp.109-112 |
| SR | 2008-08-01 10:00 |
Tokyo | NICT (Koganei,-city Tokyo) | [Technology Exhibit]
Study on a Reconfigurable RF Frontend
-- A Band-Tunable Isolator -- Takayuki Furuta, Atsushi Fukuda, Hiroshi Okazaki, Shoichi Narahashi (NTTDoCoMo) SR2008-36 |
A reconfigurable RF front-end is a promising candidate for future multi-band mobile terminals. A band-tunable isolator ... [more] | SR2008-36 pp.119-122 |
| EE | 2007-11-19 13:00 |
Tokyo | [Special Talk]
Reconfigurable RF power amplifiers Hiroshi Okazaki, Atsushi Fukuda, Shoichi Narahashi (NTT DoCoMo) EE2007-40 |
[more] | EE2007-40 pp.35-38 |
|
| SR | 2007-07-26 14:00 |
Kanagawa | [Technology Exhibit]
A Novel Reconfigurable Multiband Power Amplifier and Isolator for Reconfigurable RF Front-End Atsushi Fukuda, Takayuki Furuta, Hiroshi Okazaki, Shoichi Narahashi (NTT DoCoMo) SR2007-31 |
Future mobile terminals will operate in the wireless environment where the variety of wireless systems coexist and inter... [more] | SR2007-31 pp.69-72 |
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