Ryo YAMAGUCHI

Highly Reliable and Compact InP-Based In-Phase and Quadrature Modulators for Over 400 Gbit/s Coherent Transmission Systems
Hajime TANAKA Tsutomu ISHIKAWA Takashi KITAMURA Masataka WATANABE Ryuji YAMABI Ryo YAMAGUCHI Naoya KONO Takehiko KIKUCHI Morihiro SEKI Tomokazu KATSUYAMA Mitsuru EKAWA Hajime SHOJI 
Publication:   
Publication Date: 2020/11/01
Vol. E103-C  No. 11  pp. 661-668
Type of Manuscript:  Special Section PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
coherent transmission, optical modulators, InP, step stress test, 
 Summary | Full Text:PDF
Recent Technologies in Japan on Array Antennas for Wireless Systems
Jiro HIROKAWA Qiang CHEN Mitoshi FUJIMOTO Ryo YAMAGUCHI 
Publication:   
Publication Date: 2017/09/01
Vol. E100-B  No. 9  pp. 1644-1652
Type of Manuscript:  INVITED SURVEY PAPER
Category: Antennas and Propagation
Keyword: 
array antenna, multiple antenna, computational electromagnetics, millimeter-wave, antenna measurement, signal processing, 
 Summary | Full Text:PDF
3-Dimensional Imaging and Motion Estimation Method of Multiple Moving Targets for Multi-Static UWB Radar Using Target Point and Its Normal Vector
Ryo YAMAGUCHI Shouhei KIDERA Tetsuo KIRIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/12/01
Vol. E97-B  No. 12  pp. 2819-2829
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB radar, multiple moving targets, range points migration (RPM), interference suppression, multi-static UWB radar, 
 Summary | Full Text:PDF
Accurate Imaging Method for Moving Target with Arbitrary Shape for Multi-Static UWB Radar
Ryo YAMAGUCHI Shouhei KIDERA Tetsuo KIRIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/07/01
Vol. E96-B  No. 7  pp. 2014-2023
Type of Manuscript:  PAPER
Category: Sensing
Keyword: 
UWB pulse radar, moving target, range points migration (RPM), non-parametric imaging, multi-static UWB radar, 
 Summary | Full Text:PDF
Reduction in Mutual Coupling Characteristics of Slot-Coupled Planar Antenna due to Rectangular Elements
Huiling JIANG Ryo YAMAGUCHI Keizo CHO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/07/01
Vol. E95-B  No. 7  pp. 2368-2376
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
filter integrated antenna, base station antenna, mutual coupling reduction, broadband antenna, 
 Summary | Full Text:PDF
Low-Profile Design of Metasurface Considering FSS Filtering Characteristics
Yuki KAWAKAMI Toshikazu HORI Mitoshi FUJIMOTO Ryo YAMAGUCHI Keizo CHO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/02/01
Vol. E95-B  No. 2  pp. 477-483
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
metasurface, PMC, FSS, low-profile, 
 Summary | Full Text:PDF
Bandwidth Characteristic Improvement of Filter Integrated Antenna Composed of Aperture Coupled Patch Antenna by Using Trapezoidal Elements
Huiling JIANG Ryo YAMAGUCHI Keizo CHO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3960-3963
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
RF integrated antenna, mutual coupling, base station antenna, 
 Summary | Full Text:PDF
Effect of Dimension of Conducting Box on Radiation Pattern of a Monopole Antenna for Portable Telephone
Ryo YAMAGUCHI Kunio SAWAYA Yoshiyuki FUJINO Saburo ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/12/25
Vol. E76-B  No. 12  pp. 1526-1531
Type of Manuscript:  Special Section PAPER (Special Issue on 1992 Internatioal Symposium on Antennas and Propagation)
Category: 
Keyword: 
mobile communication, portable telephone, Galerkin-moment method, Fourier series expansion, monopole antenna, 
 Summary | Full Text:PDF