Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS |
2015-10-01 13:30 |
Kanagawa |
YRP (Yokosuka) |
[Invited Lecture]
5G Wireless Backhaul for High-Speed Rail using 90GHz Millimeter-Waves Satoshi Tamaki, Hitoshi Ishida, Eriko Takeda, Toshiyuki Saito, Michitaka Okuno, Keisuke Yamamoto, Takashi Yano, Masaaki Shida, Nobuhiko Shibagaki (Hitachi) RCS2015-168 |
In 5th generation wireless communication systems, in addition to frequency bands widely used at 4th generation, use of m... [more] |
RCS2015-168 p.63 |
RCS |
2014-10-17 14:00 |
Kanagawa |
Keio Univ. |
[Invited Lecture]
Study on LTE over unlicensed spectrum and licensed assisted access Hitoshi Ishida, Manabu Kawabe, Tsuyoshi Tamaki, Hirotake Ishii (Hitachi) RCS2014-186 |
LTE-U (LTE over unlicensed spectrum) and LAA (Licensed assisted access) are proposed to meet increasing mobile traffic d... [more] |
RCS2014-186 pp.169-174 |
EMCJ, IEE-EMC, MW, EST [detail] |
2013-10-25 12:10 |
Miyagi |
Tohoku Univ. |
Study of Tunable branch line coupler Yoshimitsu Yachi, Hajime Kondo (Chuo Electronics), Hitoshi Ishida (Gunma-CT) EMCJ2013-82 MW2013-122 EST2013-74 |
Power dividers are used to divide the input power into a number of smaller amounts of power for exciting the radiating e... [more] |
EMCJ2013-82 MW2013-122 EST2013-74 pp.131-134 |
MW |
2011-11-25 10:00 |
Okinawa |
|
Study of miniaturize and tunable 3dB branch line coupler with lumped reactance device Hajime Kondo (CEC), Satoshi Kondo, Hitoshi Ishida (GunmaCT) MW2011-118 |
[more] |
MW2011-118 pp.31-34 |
MW |
2011-10-20 11:30 |
Tokyo |
The University of Electro-Communications |
A Designing Microwave Tunable Amplifier for Multi-Band Akira Nagashio, Hitoshi Ishida (GNCT) MW2011-90 |
This paper describes a method of designing a Microwave Tunable Amplifier for Multi-Band. This design method is using a v... [more] |
MW2011-90 pp.29-32 |
MW |
2011-10-20 14:30 |
Tokyo |
The University of Electro-Communications |
Design and Analysis of Tunable and Reduced-Size Branch-Line 3dB Hybrid Satoshi Kondo (GNCT), Hajime Kondo (CHUO ELEC.), Hitoshi Ishida (GNCT) MW2011-94 |
In this paper, the authors make a study on tunable and reduced-size branch-line 3dB hybrid. Tuning capacitors are employ... [more] |
MW2011-94 pp.45-50 |
RCS, MoNA, SR (Joint) |
2011-03-03 09:40 |
Kanagawa |
YRP |
Study on Influence of Channel Mismatch to Realize Cellular System with Dynamic Cell Forming Technology Kenzaburo Fujishima, Hitoshi Ishida, Yunjian Jia, Katsuhiko Tsunehara (Hitachi Ltd.,) RCS2010-267 |
Improving cell edge throughput has become important as well as peak data rate toward IMT- Advanced. Authors proposed dyn... [more] |
RCS2010-267 pp.115-120 |
MW |
2010-12-16 14:00 |
Ishikawa |
Kanazawa Inst. of Tech. |
High-Selectivity Tunable Bandpass Filter with Tuning Capacitor Taku Yoshida, Hitoshi Ishida (Gunma College of Technolgy) MW2010-122 |
[more] |
MW2010-122 pp.1-5 |
MW |
2010-12-17 10:55 |
Ishikawa |
Kanazawa Inst. of Tech. |
Study of miniaturize and tunable 3dB branch line coupler with lumped reactance device Hajime Kondo (CEC), Hitoshi Ishida (GunmaCT) MW2010-132 |
We implement miniaturize and tunable 3dB branch line coupler that use the lumped reactance device. Electric line length ... [more] |
MW2010-132 pp.57-62 |
AN, USN, SR, RCS (Joint) |
2010-10-27 16:10 |
Osaka |
Osaka University |
Study on Cellular System with Dynamic Cell Forming for Reducing Place Dependency of Communication Quality Kenzaburo Fujishima, Hitoshi Ishida, Yunjian Jia, Katsuhiko Tsunehara (Hitachi) RCS2010-115 |
Recently, improvement of cell edge throughput has become important as well as peak data rate toward IMT- Advanced. In th... [more] |
RCS2010-115 pp.49-54 |
MW |
2009-12-17 16:00 |
Ishikawa |
Kanazawa Inst. of Tech. |
A Study of Tunable Bandpass Filter with Variable Capacitor Sho Kobayashi, Kohei Hasegawa, Hitoshi Ishida (Gunma National College of Technology) MW2009-149 |
Novel micro strip tunable bandpass filters using tuning capacitor are investigated. We suggest a new bandpass filter tha... [more] |
MW2009-149 pp.35-40 |
MW |
2009-12-17 16:25 |
Ishikawa |
Kanazawa Inst. of Tech. |
Design and Analysis of Sharp and Compact Notch Filter with Capacitor.
-- Implementation of Tunable Notch Filter Using Varactor-Diode. -- Ravindra Sandaruwan Ranaweera, Katsuhiro Yano, Hitoshi Ishida (Gunma Nat Coll. of Tech.) MW2009-150 |
In this report we report a Tunable Notch Filter which can be used to interference rejection in Cognitive Radios. This Tu... [more] |
MW2009-150 pp.41-45 |
RCS, SAT (Joint) |
2008-12-19 10:35 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Channel Capacity in 2-hop OFDMA Virtual Cellular Network using Parallel Relay Route Hitoshi Ishida, Eisuke Kudoh, Fumiyuki Adachi (Tohoku Univ.) RCS2008-166 |
In the next generation mobile communication systems, high speed data services are expected. However, unacceptable large ... [more] |
RCS2008-166 pp.91-96 |
MW |
2008-12-12 13:50 |
Toyama |
Toyama-Univ. Gofuku-camp. |
A Study of Gap-Coupled Microstrip Narrow-Bandpass Filter with Tapped Input/Output
-- NarrowBand Low insertion loss Bandpass Filter -- Hitoshi Ishida (Gunma College of Tech.), Kiyomichi Araki (Tokyo Inst.of Tech.) MW2008-155 |
In Microstrip gap-coupling Bandpass Filter: MGCBPF, sharp attenuation frequencies can be set at arbitrary frequency loca... [more] |
MW2008-155 pp.53-58 |
USN, CQ, MoNA (Joint) |
2008-01-24 14:25 |
Shizuoka |
Kenshu Kouryu Center, Actcity Hamamatsu (Shizuoka) |
Examination and Evaluation of the distance measurement method in Wireless Sensor Network Yasunori Ido, Hitoshi Ishida (Mitsubishi Electric Corp.) USN2007-61 |
In location identification of sensor node that node estimate own position, it’s important to measure the distance betwee... [more] |
USN2007-61 pp.37-42 |
RCS, SAT (Joint) |
2007-12-20 16:10 |
Oita |
|
Subcarrier Allocation for a 2-Hop OFDMA Virtual Cellular Network Hitoshi Ishida, Eisuke Kudoh, Fumiyuki Adachi (Tohoku Univ.) RCS2007-119 |
A multi-hop virtual cellular network (VCN) was proposed for future mobile communication systems. We have studied the mul... [more] |
RCS2007-119 pp.43-48 |
RCS, SAT (Joint) |
2007-12-21 10:35 |
Oita |
|
Propagation analysis and field measurements of circularly polarized wave on high elevation angle for mobile satellite communications Isao Nakazawa, Kazuhiro Kimura, Jun Amagai, Yoshiyuki Fujino, Hitoshi Ishida, Shin'ichi Hama (NICT) SAT2007-57 |
In the mobile satellite communications in the personal use environment, it is preferable to clarify a variety of propaga... [more] |
SAT2007-57 pp.7-12 |
RCS, MoNA, WBS, SR, MW (Joint) |
2007-03-08 14:00 |
Kanagawa |
YRP |
Blocking probability of a 2 hop Virtual Cellular Network Hitoshi Ishida, Lalla Soundous El Alami, Eisuke Kudoh, Fumiyuki Adachi (Tohoku Univ.) RCS2006-266 |
In future mobile communication systems, there will be a big need to increase the transmit power. However, as the transmi... [more] |
RCS2006-266 pp.127-130 |
SAT |
2006-10-19 17:30 |
Overseas |
KAL Hotel (Jeju-Do, Korea) |
Analysis of the Propagation Field Data on High Elevation Angle for 2GHz and 2.5GHz Bands Mobile Satellite Communications Isao Nakazawa (NTWL), Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT) |
The receiving revel of mobile satellite communication using the communication and broadcasting engineering test satellit... [more] |
|
MW |
2006-09-06 13:40 |
Tokyo |
|
Analysis of Coupled-Line Sharp Notch Filter Hitoshi Ishida (NICT), Kiyomichi Araki (TIT) |
Two types of band-rejection filters are available: one with an electrically coupled half-wave resonator, and the other w... [more] |
MW2006-97 pp.121-126 |