| IEICE Technical Committee Submission System Conference Schedule |
Online Proceedings [Sign in] Tech. Rep. Archives |
All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| MW | 2012-03-02 13:00 |
Saga | Saga University | High Power Operation for Broadband Branch-Line Coupler with Coupled Lines Tadashi Kawai, Toshiki Hayashi, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2011-184 |
[more] | MW2011-184 pp.91-95 |
| NS, RCS (Joint) |
2011-12-16 16:20 |
Yamaguchi | Yamaguchi University | A PAPR reduction method on digital predistortion linearizer for compensating frequency dependent distortion components Junya Ohkawara, Yasunori Suzuki, Shoichi Narahashi (NTT DOCOMO) RCS2011-263 |
This paper proposes a peak-to-average power ratio (PAPR) reduction method applied to a digital predistortion linearizer ... [more] | RCS2011-263 pp.183-186 |
| 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 |
| OPE, MW, MWP, EMT, EST, IEE-EMT [detail] | 2011-07-22 12:15 |
Hokkaido | Dual-Band Bandpass Filter Using Multilayered LTCC Technologies Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) MW2011-61 OPE2011-48 EST2011-47 MWP2011-29 |
[more] | MW2011-61 OPE2011-48 EST2011-47 MWP2011-29 pp.131-134 |
|
| MW | 2011-06-23 15:15 |
Gifu | National Institute for Fusion Science | New Approach for Configuring a Compact High-Temperature Superconducting Dual-Band Bandpass Filter Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) MW2011-34 |
[more] | MW2011-34 pp.13-16 |
| AP, MW (Joint) |
2011-03-03 11:25 |
Ibaraki | Ibaraki Univ. | Center Frequency and Bandwidth Tunable Filter with Symmetric Attenuation Characteristics Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2010-156 |
This paper proposes a novel tunable resonator and bandpass filter that have symmetric attenuation characteristics about ... [more] | MW2010-156 pp.23-26 |
| 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 |
| MW | 2010-11-25 16:50 |
Okinawa | Tiruru | [Special Talk]
Briefing Report on 2010 IEEE MTT-S International Microwave Symposium Shoichi Narahashi, Kunihiro Kawai (NTT DOCOMO), Kensuke Okubo (Okayama Prefectural Univ.), Masahiro Horibe (AIST), Takana Kaho (NTT), Kazuhisa Yamauchi (Mitsubishi), Kengo Kawasaki (Saga Univ.) MW2010-113 |
IEEE MTT-S International Microwave Symposium (IMS) was held in Anaheim, the United States, from May 23 to 28, 2010. This... [more] | MW2010-113 pp.45-54 |
| SCE, MW | 2010-04-23 10:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | High-Temperature Superconducting Parallel-Planar Dual-Band Bandpass Filter
-- Evaluation of Frequency Responses Affected by Temperature Difference between Two Substrates -- Yuta Takagi, Kei Satoh, Daisuke Koizumi, Shoichi Narahashi (NTT DOCOMO) SCE2010-4 MW2010-4 |
We have been proposed a high-temperature superconducting parallel-planar dual-band bandpass filter (HTS-DBPF) which has ... [more] | SCE2010-4 MW2010-4 pp.17-22 |
| SCE, MW | 2010-04-23 11:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Available fractional bandwidths for high temperature superconducting compact dual-band bandpass filter Kei Satoh, Yuta Takagi, Shoichi Narahashi (NTT DOCOMO), Toshio Nojima (Hokkaido Univ.) SCE2010-5 MW2010-5 |
This paper presents a flexible design method for dual-band bandpass filters. The gist of the proposed method lies in usi... [more] | SCE2010-5 MW2010-5 pp.23-26 |
| MW | 2010-03-05 14:30 |
Kyoto | Ryukoku Univ. | [Special Talk]
Briefing Report on European Microwave Conference 2009 Shoichi Narahashi, Kunihiro Kawai, Takayuki Furuta (NTT DOCOMO), Tetsuya Ueda (Kyoto Institute of Technology), Takayoshi Ito (Toshiba), Noboru Oishi (Mitsubishi Electric) MW2009-207 |
The Microwave week 2009, comprising the European Microwave Conference, European Wireless Technology Conference, European... [more] | MW2009-207 pp.159-168 |
| MW | 2009-11-19 14:55 |
Kagoshima | Tanegashima | Improvement in Capacity Performance of W-CDMA Systems Achieved through Cryogenic Receiver Front-End Kei Satoh, Yasunori Suzuki, Tetsuya Mimura, Shoichi Narahashi (NTT DOCOMO), Toshio Nojima (Hokkaido Univ.) MW2009-132 |
This paper presents an improvement in capacity performance of a wideband code division multiple access (W-CDMA) system r... [more] | MW2009-132 pp.25-28 |
| EMCJ, MW, IEE-MAG | 2009-10-23 11:30 |
Iwate | Iwate Univ. | Center Frequency, Bandwidth, and Transfer Function Tunable Bandpass Filter Employing Tunable Ring Resonator Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) EMCJ2009-65 MW2009-114 |
This paper presents a novel tunable bandpass filter that configures its center frequency, bandwidth, and transfer functi... [more] | EMCJ2009-65 MW2009-114 pp.123-128 |
| MW (Workshop) |
2009-08-20 - 2009-08-21 |
Overseas | KMUTNB, Bangkok, Thailand | Compact 2.1-/2.7-GHz High Temperature Superconducting Bandpass Filter Yuta Takagi, Kei Satoh, Shoichi Narahashi (NTT DOCOMO) |
This paper proposes a compact high temperature superconducting (HTS) dual-band bandpass filter (DBPF). The architecture ... [more] | |
| MW (Workshop) |
2009-08-20 - 2009-08-21 |
Overseas | KMUTNB, Bangkok, Thailand | 2.0-/3.5-GHz Bandpass Filter Employing Quarter-Wavelength Resonator with Open Stubs Kei Satoh, Yuta Takagi, Shoichi Narahashi (NTT DOCOMO), Toshio Nojima (Hokkaido Univ.) |
This paper presents a dual-band bandpass filter (DBPF) that has coplanar-waveguide quarter-wavelength resonators with op... [more] | |
| MW (Workshop) |
2009-08-20 - 2009-08-21 |
Overseas | KMUTNB, Bangkok, Thailand | DC I-V characteristics of cryogenically-cooled GaN HEMT amplifier employing blue-light illumination Yasunori Suzuki, Shoichi Narahashi (DOCOMO), Toshio Nojima (Hokudai) |
This paper experimentally investigates a 2-GHz band cryogenically-cooled gallium nitride high electron mobility transist... [more] | |
| MW | 2009-03-06 17:30 |
Tokyo | NHK Science & Technical Research Lab. | [Special Talk]
Briefing Report on European Microwave Conference 2008 Shoichi Narahashi, Kei Satoh, Kunihiro Kawai (NTT DOCOMO), Tetsuo Anada, Chun-Ping Chen (Kanagawa Univ.), Kazuhiro Fujimori (Okayama Univ.), Hiroyuki Takahashi (NTT), Hiroyuki Kayano (Toshiba), Kazuhisa Yamauchi, Masaomi Tsuru (Mitsubishi Electric), Takuo Kashiwa (Furuno Electric) MW2008-209 |
The Microwave week 2008, comprising the European Microwave Conference, European Wireless Technology Conference, European... [more] | MW2008-209 pp.111-122 |
| 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 |
| MW | 2008-12-12 11:40 |
Toyama | Toyama-Univ. Gofuku-camp. | Fast calculation scheme for frequency characteristics compensator of digital predistortion linearizer compensating frequency-dependent IMD Junya Ohkawara, Yasunori Suzuki, Shoichi Narahashi (NTT DOCOMO) MW2008-152 |
[more] | MW2008-152 pp.37-40 |
[Return to Top Page]