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IEICE Trans

Atsushi YAMAMOTO

920MHz Path Loss Prediction Formula Based on FDTD Method for IoT Wireless System close to Ceiling with Concrete Beam
Naotake YAMAMOTO Taichi SASAKI Atsushi YAMAMOTO Tetsuya HISHIKAWA Kentaro SAITO Jun-ichi TAKADA Toshiyuki MAEYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2022/12/01
Vol. E105-B  No. 12  pp. 1540-1547
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
indoor propagation, FDTD, 920MHz band, propagation near ceiling with beam, IoT, path loss prediction, 
 Summary | Full Text:PDF
A Spatial Fading Emulator for Evaluation of MIMO Antennas in a Cluster Environment
Tsutomu SAKATA Atsushi YAMAMOTO Koichi OGAWA Hiroshi IWAI Jun-ichi TAKADA Kei SAKAGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/10/01
Vol. E97-B  No. 10  pp. 2127-2135
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems)
Category: 
Keyword: 
fading emulator, cluster, angular power spectrum, OTA, handset antenna, MIMO, channel capacity, 
 Summary | Full Text:PDF
Performance Evaluation of Spatial Correlation Characteristics for Handset Antennas Using Spatial Fading Emulator Based on Clarke's Model
Hiroshi IWAI Kei SAKAGUCHI Tsutomu SAKATA Atsushi YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10  pp. 2514-2522
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Mobile Propagation
Keyword: 
spatial fading emulator, spatial correlation characteristic, multi-path propagation environment, handset antennas, scatterers, 
 Summary | Full Text:PDF
3-D Angular Spectrum Measurements at 5 GHz in a Residential Two-Story House
Hiroshi IWAI Tsutomu SAKATA Atsushi YAMAMOTO Kei SAKAGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2344-2351
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Propagation
Keyword: 
3-D angular spectrum, residential house, propagation, MIMO, channel capacity, 
 Summary | Full Text:PDF
Empirical Investigation of the LOS Propagation Characteristics on an Undulating Road for Millimeter Wave Inter-Vehicle Communication
Atsushi YAMAMOTO Koichi OGAWA Hiroshi SHIRAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/09/01
Vol. E90-C  No. 9  pp. 1807-1815
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Antennas/Systems
Keyword: 
ITS, inter-vehicle communications, LOS, road undulation, 
 Summary | Full Text:PDF
Equivalent Circuit Analysis for Time-Coordinated Non-arcing Operation of Reed Switches
Noboru WAKATSUKI Yu YONEZAWA Atsushi YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8  pp. 1182-1186
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Relays & Switches
Keyword: 
reed switch, arc discharge suppression, arc ignition, mechanical contacts, relay, 
 Summary | Full Text:PDF
Attenuation Characteristics of the SAR in a COST244 Phantom with Different EM Source Locations and Sizes
Shoichi KAJIWARA Atsushi YAMAMOTO Koichi OGAWA Akihiro OZAKI Yoshio KOYANAGI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2391-2400
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
SAR, attenuation characteristic, COST244 phantom, lossy medium, spatial spread of energy, 
 Summary | Full Text:PDF
A Low-Profile Bi-Directional Cavity Antenna with Broadband Impedance Characteristics
Atsushi YAMAMOTO Hiroshi IWAI Toshimitsu MATSUYOSHI Koichi OGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/09/01
Vol. E84-B  No. 9  pp. 2490-2497
Type of Manuscript:  Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category: Mobile Antennas
Keyword: 
bi-directional radiation pattern, cavity antenna, IMT-2000, picocell base station, 
 Summary | Full Text:PDF
A Flexible Learning Algorithm for Binary Neural Networks
Atsushi YAMAMOTO Toshimichi SAITO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/09/25
Vol. E81-A  No. 9  pp. 1925-1930
Type of Manuscript:  PAPER
Category: Neural Networks
Keyword: 
binary neural networks, boolean function, supervised learning, multi-layer perceptron, function approximation, 
 Summary | Full Text:PDF