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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 22  /  [Next]  
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
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