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Dive into the research topics where Ryuta Sonoda is active.

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Featured researches published by Ryuta Sonoda.


international microwave symposium | 2002

Use of a transparent conductive thin-film on a glass substrate in active integrated antenna arrays with double strong coupling

Kiyoshi Oshima; Nobutaka Kidera; Kazuhiko Niwano; Koji Ikawa; Ryuta Sonoda; Shigeo Kawasaki

Active Integrated Antenna (AIA) arrays were fabricated on a glass substrate using a conductive thin film, which was thin enough to be transparent to realize a transparent RF component. It can be attached to a window glass keeping its visibility. This means a potential to develop to new applications in microwave communication. The AIA arrays, here, consist of CPW, double strong coupling and 2-element array. For the oscillation using the lossy transmission line, a backing conductor and a Partly Thickened Conductor (PTC) were used. It operated at 8.54 GHz with the in-phase mode and EIRP was 14.3 dBm.


Archive | 2011

RFID tag and manufacturing method thereof, impedance-adjusting method and resin sheet and manufacturing method therefor

Ryuta Sonoda; Koji Ikawa; Kazuhiko Niwano; Kouji Koganezawa


Archive | 2013

Antenna device and wireless device provided with same

Ryuta Sonoda; Koji Ikawa; Toshiki Sayama


Archive | 2015

Multiple antenna and wireless device provided with same

稔貴 佐山; Toshiki Sayama; 龍太 園田; Ryuta Sonoda; 井川 耕司; Koji Ikawa


Archive | 2014

Antenna device and wireless device provided therewith

Ryuta Sonoda; 龍太 園田; Toshiki Sayama; 稔貴 佐山; Koji Ikawa; 井川 耕司


Archive | 2011

High-permittivity resin sheet, laminate, and process for production of high-permittivity resin sheet

Koji Koganezawa; 小金澤 光司; Kazuhiko Niwano; 和彦 庭野; Ryuta Sonoda; 龍太 園田; Tetsuya Yanoshita; 哲也 矢ノ下; Koji Ikawa; 井川 耕司


Archive | 2008

Antenna device comprising an artificial medium

Kohji Ikawa; Masahide Koga; Ryuta Sonoda; Fuminori Watanabe; Kazuhiko Niwano


Journal of Advanced Science | 2002

A simulator with a plug-in frame structure for the thin-wire antenna analysis

Ryosuke Sasaki; Masaharu Nozawa; Masayoshi Toyoda; Hiroyuki Koike; Ryuta Sonoda; Takuo Morimoto; Shigeo Kawasaki


Journal of Advanced Science | 2002

Millimeter-wave active integrated antenna using the 3D printed PBG structure

Hideyuki Ishida; Ryuta Sonoda; Shigeo Kawasaki


Journal of Advanced Science | 2001

A microwave and millimeter wave planar circuit with PBG structure and analysis using the FDTD method

Ryuta Sonoda; Naoki Ohkubo; Yoshihisa Yasuoka; Shigeo Kawasaki

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Shigeo Kawasaki

Japan Aerospace Exploration Agency

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