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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP | 2008-12-11 14:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Miniaturization of a circular radiating element using sandwiched dielectric loading for Ring-type UWB antennas. Takashi Arakawa, Ken-ichi Asanuma, Katsuhiro Fujimoto, Takayuki Wakabayashi, Tadahiko Maeda (Ritsumeikan Univ.)  AP2008-144 |
This report describes the radiation characteristics of ring-type UWB antennas placed in the vicinity of a simulated huma... [more] | AP2008-144 pp.25-30 |
| AP | 2008-09-11 13:25 |
Kanagawa | National Defense Academy | Wideband Design Method for Self-Adaptive Power Divider Configuration for Reducing the Effects of Human Hand Placed in the Vicinity of Antennas Hiroshi Tanji, Wataru Nakamura, Tadahiko Maeda (Ritsumeikan Univ.) AP2008-82 |
Human hand affects radio-frequency devices such as built-in antennas when these devices are used by the human operator. ... [more] | AP2008-82 pp.43-48 |
| AP | 2008-09-11 13:50 |
Kanagawa | National Defense Academy | Scale-model Experiments on Impedance and Radiation Efficiency Measurements Using Scale-model Human Equivalent Phantoms Placed in the Vicinity of the Antenna Under Test Katsuhiro Fujimoto, Ken-ichi Asanuma, Takayuki Wakabayashi, Tadahiko Maeda (Ritsumeikan Univ.) AP2008-83 |
In assessing a wideband small antenna, both input impedance and radiation efficiency are important evaluation indexes. H... [more] | AP2008-83 pp.49-54 |
| AP | 2008-03-13 14:15 |
Aichi | Nanzan Univ. | The Effects of Antenna Arrangement and Human Hand on the MIMO Channels for Short Range Wireless Communication Takahiro Mizuno, Satoshi Kojima, Kouta Nakamura, Keiichi Yoshitomi, Ken-ichi Asanuma, Tadahiko Maeda (Rits Univ.) AP2007-180 |
Recently, MIMO (Multiple-Input Multiple-Output) has attracted much attention as a technology achieving a higher channel ... [more] | AP2007-180 pp.43-48 |
| AP | 2008-03-13 14:50 |
Aichi | Nanzan Univ. | MIMO Channel Measurements including Human body and Blocking Objects at 2.4GHz/5.2GHz Satoshi Kojima, Takahiro Mizuno, Kouta Nakamura, Keiichi Yoshitomi, Ken-ichi Asanuma, Tadahiko Maeda (Rits Univ.) AP2007-181 |
In recent years, MIMO (Multiple-Input Multiple-Output) systems achieving high data rate transmission have been receiving... [more] | AP2007-181 pp.49-54 |
| EMCJ | 2008-03-07 16:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg | A Phantom-coated Cavity-backed Bow-tie Antenna for Ground Penetrating Radar. Satoshi Tanaka, Kiyoto Matsushima, Tadahiko Maeda (Ritsumeikan Univ.) EMCJ2007-130 |
The frequency spectrum of a conventional ground penetrating radar is ranging from several MHz through 1GHz since the e... [more] |
EMCJ2007-130 pp.77-82 |
| AP | 2008-01-24 13:30 |
Okinawa | Tyeruru.(Naha) | Transmission Characteristics of Microstrip Line Filters with Complementary Split-Ring Resonators placed in the Vicinity of Lossy Medium Wataru Nakamura, Katsuya Kato, Tadahiko Maeda (Rits Univ.) AP2007-140 |
In recent years, left-handed materials (LHMs) have been receiving major emphasis and microwave and millimeter-wave sys... [more] | AP2007-140 pp.105-110 |
| AP | 2008-01-24 16:50 |
Okinawa | Tyeruru.(Naha) | A Study of Feeding Cable Leakage Current in terms of the Size and Feature of a Grounding Plate for a UWB Radiating Element Masayuki Shiromoto, Takeshi Okumoto, Katsuhiro Fujimoto, Kiyoto Matsushima, Tadahiko Maeda (Rits. Univ.) AP2007-149 |
Microstrip line (MSL)-fed and coplanar waveguide (CPW)-fed antennas have some inherent problems caused by the leakage cu... [more] | AP2007-149 pp.157-162 |
| AP, SAT (Joint) |
2007-07-19 09:40 |
Hokkaido | Daiichi-Takimotokan(Noboribetsu) | Study on the Radiation Characteristics of the Asymmetric Shorted Bow-tie Antenna Ken-ichi Asanuma, Takeshi Okumoto, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.) AP2007-44 |
UWB(Ultra Wideband) is one of the promissing technologies for ultra high speed wireless communications especially for t... [more] |
AP2007-44 pp.13-18 |
| AP | 2007-05-18 10:50 |
Kochi | Kochi Univ. of Tech. | Evaluation of the Near-Field UWB Transmission Characteristics Using the MR-FDTD Method Applied to the Parallel Computing Ken-ichi Asanuma, Katsuhiro Fujimoto, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.) AP2007-22 |
To assess the actual performance of UWB transmission systems, various relative angles between the transmitting antenna a... [more] | AP2007-22 pp.51-56 |
| AP | 2007-05-18 11:15 |
Kochi | Kochi Univ. of Tech. | A Study on the Band-rejection Characteristics of the Frequency Notched UWB Antenna Placed in the Vicinity of a Human Hand Keiichi Yoshitomi, Ken-ichi Asanuma, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.) AP2007-23 |
Ultra wide-band (UWB) technology is one of the most promising solutions for the future wireless communication systems d... [more] |
AP2007-23 pp.57-62 |
| RCS, MoNA, WBS, SR, MW (Joint) |
2007-03-09 16:30 |
Kanagawa | YRP | Research and Standardization activty for IEEE802.15.3c mmW WPAN
-- (5) Study on essential items for 15.3cMAC -- Fumihide Kojima, Zhou Lan, Chang-Woo Pyo, Shuzo Kato (NICT), Hiroyuki Nakase (Tohoku Univ.), Yukimasa Nagai, Takahisa Yamauchi (Mitsubishi), Tadahiko Maeda, Hideto Ikeda (Oki), Yasuyuki Oishi (FUJITSU Labo.) RCS2006-282 |
Conventional 15.3MAC cannot cope with IEEE802.15.3c-high-speed-PHY without suitable modifications in its specifications.... [more] | RCS2006-282 pp.191-194 |
| AP | 2007-01-25 13:00 |
Fukui | Fukui Univ. | A Study on an Impedance Matching Method of Dipole Earphone Antennas with Varicap Diodes Attached to the Feedline for the Digital Terrestrial Broadcasting Reception Masato Tanaka, Ken-ichi Asanuma, Tadahiko Maeda (Ritsumeikan Univ.) AP2006-114 |
New digital broadcasting services for portable radio device started in Japan. To realize the high quality TV reception i... [more] | AP2006-114 pp.25-30 |
| AP | 2007-01-25 14:50 |
Fukui | Fukui Univ. | A Study on the Application Conditions of FDTD Subgridding Algorithm for the Analysis of Yagi-Uda Antennas Placed in the Vicinity of Building Structures Yuichi Maeda, Shio Yamamoto, Daisuke Ushirogouchi, Ken-ichi Asanuma, Tadahiko Maeda (Ritsumeikan Univ.) AP2006-118 |
In order to increase the simulation accuracies with FDTD method, it is often required to use higher grid resolution with... [more] | AP2006-118 pp.49-54 |
| AP | 2006-12-14 13:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Eigenvalue Distribution of the Multi-Element UWB Antenna Systems Including the Effects of Human Body Ken-ichi Asanuma, Daisuke Ushirogouchi, Shio Yamamoto, Tadahiko Maeda (Ritsumeikan Univ.) AP2006-107 |
In order to evaluate the actual performance of the short-range UWB high-speed transmission systems under Line-of-Sight c... [more] | AP2006-107 pp.63-68 |
| EMCJ | 2006-07-27 15:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Current Distribution Measurements of Antenna Radiating Elements using Optical Electric Field Probe Masayuki Shiromoto, Hiroyuki Matsuda, Tadahiko Maeda (Ritsumeikan Univ.) EMCJ2006-31 |
We have studied the radiation pattern of an optical electric field sensor, which has replaceable sensor elements, in ter... [more] | EMCJ2006-31 pp.71-76 |
| AP, SAT (Joint) |
2006-07-06 10:25 |
Hiroshima | Hiroshima Institute of Technology | A Basic Study on Glycerin Phantom for Scale-model Measurements Akira Miyata, Yuichi Yokota, Shio Yamamoto, Tadahiko Maeda (Ritsumeikan Univ.) AP2006-40 |
Since the mobile terminal is usually used nearby human body, it is necessary to measure the effects of human body on th... [more] |
AP2006-40 pp.7-12 |
| AP, SAT (Joint) |
2006-07-06 10:50 |
Hiroshima | Hiroshima Institute of Technology | An Experimental Study on the Radiation Characteristics Measurements for Antennas Using Scale Model Phantom Wataru Nakamura, Shio Yamamoto, Tadahiko Maeda (Rits Univ.) AP2006-41 |
While evaluating the radiation characteristics of antennas for portable terminals, it is important to have a quantitativ... [more] | AP2006-41 pp.13-18 |
| AP, SAT (Joint) |
2006-05-19 09:00 |
Kagoshima | Kagoshima Univ. | A Study on the Design Parameters for Evaluating the UWB Transmission Characteristics Including the Effects of Human Body Ken-ichi Asanuma, Tadahiko Maeda (Ritsumeikan Univ.) AP2006-17 |
[more] | AP2006-17 pp.47-52 |
| AP, SAT (Joint) |
2006-05-19 09:25 |
Kagoshima | Kagoshima Univ. | A Study on the Modeling Accuracy of a Human Hands in terms of the Simulation and Experiment Results of UWB transmissions Daisuke Ushirogouchi, Ken-ichi Asanuma, Shio Yamamoto, Tadahiko Maeda (Ritsumei Univ) AP2006-18 |
ince the size of mobile terminal is getting reduced recently, the human hand holding the terminal tends to block the rad... [more] | AP2006-18 pp.53-58 |
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