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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP, MW (Joint) |
2011-03-03 13:25 |
Ibaraki | Ibaraki Univ. | Reading Characteristics of 2.45GHz Band Passive RFID Tags Attached to a Large Metallic Plate form a Close Distance Wataru Sudo, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.)  AP2010-180 |
In this paper, we have compared the characteristics of a circularly polarized antenna and linearly polarized antenna whe... [more] | AP2010-180 pp.37-42 |
| AP, MW (Joint) |
2011-03-03 13:50 |
Ibaraki | Ibaraki Univ. | An Array Antenna for MIMO Systems with a Decoupling Network Using Bridge Susceptances Naoyuki Endo, Kenichi Kagoshima, Shigeki Obote, Atsuhiro Kagaya, Kazuki Nishimura (Ibaraki Univ.) AP2010-181 |
Decoupling／Matching Feed Network (DMFN) is one of the important equipment to improve ability of MIMO systems. Especially... [more] | AP2010-181 pp.43-48 |
| AP, MW (Joint) |
2011-03-03 15:20 |
Ibaraki | Ibaraki Univ. | Investigation on Radiation Power of a Wireless Power Transmission Device Employing Resonance between Antennas Kaito Arita, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.;) AP2010-184 |
Technology of wireless power transfer which use resonance between antennas has gathered attention since it has brought o... [more] | AP2010-184 pp.61-66 |
| AP, SAT (Joint) |
2010-07-23 10:00 |
Hokkaido | Kitami Inst. Tech. | Limitation of the performance of a small array antenna and its effective design technique for MIMO systems Kenichi Kagoshima (Ibaraki Univ.), Atsuhiro Kagaya, Shigeki Obote (Ibaraki Univ) AP2010-61 |
Decoupling and matching characteristics of a perfect mesh feeding network have been investigated for an array antenna wi... [more] | AP2010-61 pp.133-138 |
| AP | 2010-02-19 14:25 |
Tokyo | Toshiba | Frequency characteristic analysis of the efficiency of a MIMO array antenna with a matching circuit Atsuhiro Kagaya, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2009-200 |
In recent years, wireless communication is demanded high communication capacity due to increase of communication rate. M... [more] | AP2009-200 pp.95-100 |
| SIS | 2009-12-17 13:00 |
Kyoto | Expansion of reading distance of passive RFID of 2.45GHz band using an existing metallic wire Toru Suzuki, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.) SIS2009-34 |
2.45GHz band RFID is communicated by the electromagnetic radiation. Therefore, the communication distance because short.... [more] | SIS2009-34 pp.19-24 |
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| SIS | 2009-12-17 13:20 |
Kyoto | Characteristics of a dead spot for 2.45GHz band passive RFID tags close to metallic plates Jun Tei, Peng Wang, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.) SIS2009-35 |
We have observed experimentally that dead spots occur when a 2.45GHz band RFID tag is placed in a vicinity of a metallic... [more] | SIS2009-35 pp.25-30 |
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| RCS, AP (Joint) |
2009-11-27 11:15 |
Tokyo | Tokyo Inst. of Tech. | Analysis for Characteristic on 4 Ports MIMO Base Station using Polarization Antennas with Controled Beam Tilt Hiromichi Teratake, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.), Takayuki Shimizu, Shinsuke Murano (Hitachi Cable) AP2009-133 |
When existing 2 ports polarization diversity antenna was configured by arranging 2 ports antenna horizontally, we invest... [more] | AP2009-133 pp.85-90 |
| AP, SAT (Joint) |
2009-07-10 17:05 |
Hokkaido | Otaru city, Hokkaido | Decoupling and Matching Feeding Circuit for a Multi-beam Array Antenna Using a Bridge Susceptance Kenichi Kagoshima, Shigeki Obote, Atsuhiro Kagaya (Ibaraki Univ.) AP2009-78 |
It is desired to realize high radiation efficiency and low correlation coefficient in order to achieve high system perfo... [more] | AP2009-78 pp.201-206 |
| AP | 2009-06-11 14:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Study on an equivalent circuit for re-radiated power analysis of receiving antenna and an equivalent circuit of the transmitting antenna Toru Suzuki, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.), Yasuo Suzuki (Tokyo Univ. of Agr. and Tech.) AP2009-41 |
Transmission Antenna makes radiation field when it fed power from the center of antenna. At the same time, Receiving Ant... [more] | AP2009-41 pp.25-29 |
| AP | 2009-06-11 15:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Study on efficiency and correlation coefficient of a diversity antenna with a matching circuit Atsuhiro Kagaya, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2009-42 |
An antenna array in a mobile terminal become large mutual coupling because of closely element space. So the antenna syst... [more] | AP2009-42 pp.31-36 |
| AP | 2008-12-11 13:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Transmitting and receiving characteristics of an array antenna with a matched load and its application for MIMO systems Kenichi Kagoshima, Shigeki Obote, Atsuhiro Kagaya (Ibaraki Univ.) AP2008-142 |
It is effective to employ matching circuits for array antennas with strong mutual coupling in MIMO or diversity applicat... [more] | AP2008-142 pp.13-18 |
| SIS | 2008-12-04 13:10 |
Osaka | Kansai Univ. | A Study on Performance Improvement and Reading Technique of Small RFID Tags Hiroyuki Koga, Peng Wang, Sho Yamada, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.), Kenji Araki (Hitachi Ltd.) |
[more] | SIS2008-48 pp.33-38 |
| AP | 2008-09-11 14:50 |
Kanagawa | National Defense Academy | Design of a matching feeding circuit for a MIMO antenna with mutual coupling Kenichi Kagoshima (Ibaraki Univ.), Shigeki Obote (Ibaraki Univ) AP2008-85 |
[more] | AP2008-85 pp.61-66 |
| AP | 2008-06-19 14:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Study on a Transmitting Tapped Delay Line Adaptive Array Antenna Shigeki Obote, Takayuki Tanou, Kenichi Kagoshima (Ibaraki Univ.) AP2008-31 |
A Tapped Delay Line Adaptive Array Antenna (TDL-AAA) is a spatial and temporal equalizer and this feature results in les... [more] | AP2008-31 pp.11-16 |
| AP | 2008-03-14 10:10 |
Aichi | Nanzan Univ. | Design of array antennas with optimum directivity and arbitary null points Hiromichi Teratake, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2007-187 |
A design of array anntenas with optimum directivity has been proposed using matrix eigen value. However , the design th... [more] |
AP2007-187 pp.83-88 |
| AP | 2008-03-14 13:00 |
Aichi | Nanzan Univ. | A Consideration of Electromagnetic-wave Transmission in a Single Conductor Yuuichi Shiraishi, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2007-191 |
If challenge to build a sensor network in a factory, we come up with a wireless sensor network which is the easiest way ... [more] | AP2007-191 pp.107-112 |
| AP | 2008-03-14 15:40 |
Aichi | Nanzan Univ. | Triple Frequency Wide band Microstrip Antennas With Ring Parasitic Hiroya Tanaka, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2007-197 |
In this report, it proposed the multi-band wideband antenna that was able to share three frequencies of frequency ratio... [more] | AP2007-197 pp.141-146 |
| AP | 2007-12-13 14:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Bandwidth Enhancement of a Low-Profile Microstrip Antenna Electromagnetically Coupled with a Folded Inverted L-shaped Probe Kazuki Ikeda, Kenichi Kagoshima, Shigeki Obote (Ibaraki Univ.) AP2007-118 |
It is known that a method of bandwidth enhancement for a microstrip antenna (MSA) electromagnetically coupled with an in... [more] | AP2007-118 pp.19-24 |
| SIS | 2007-12-10 09:55 |
Hyogo | Study on characteristics of small RFID tags and its performance improvement Peng Wang, Hideaki Yamauchi, Daijiro Araki, Sho Yamada, Shigeki Obote, Kenichi Kagoshima (Ibaraki Univ.), Kenji Araki (Hitachi Research Lab.) SIS2007-46 |
A small RFID tag consists of a antenna and IC-chip, and its size is several mm. Because antenna gain is very small and i... [more] | SIS2007-46 pp.7-12 |
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