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Dive into the research topics where Akiko Yamada is active.

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Featured researches published by Akiko Yamada.


international workshop on antenna technology | 2010

Radiation mechanism of H-shaped antenna using parallel resonance mode

Akiko Yamada; Hiroyuki Arai; Shuichi Sekine; Makoto Higaki; Shuichi Obayashi; Hiroki Shoki

It is required to work in various surrounding environments in order that the small antennas used for mobile terminal and RFID tag are located in the vicinity of various objects including the human body and the metal. H-shaped antenna has been proposed to obtain the characteristics not to be changed by circumference environment. The H-shaped antenna has been designed by adjusting offset position and the ratio between the lengths of parallel elements. As a result of examination about the antenna height (h), the shift of input impedance near the metal was the smallest when h=0.04ε.


Archive | 2012

Power transmission device, power reception device, control device, and radio power transmission system

Toru Shijo; Akiko Yamada; Kohei Onizuka; Fumi Moritsuka; Hiroaki Ishihara; Kisho Odate; Shuichi Obayashi; Hiroki Kudo; Kenichiro Ogawa; Shoji Otaka; Hiroki Shoki


european conference on antennas and propagation | 2011

Evaluation for RFID tag antennas by antenna clearance based on power reflection coefficient

Akiko Yamada; Hiroyuki Arai; Shuichi Obayashi; Hiroki Shoki


Archive | 2014

Inductor for transmitting power

徹 司城; Tetsu Shijo; 岡本 徹志; Tetsushi Okamoto; 亜希子 山田; Akiko Yamada; 尾林 秀一; Shuichi Obayashi


Archive | 2013

Resonator and radio power transmission device

Shuichi Obayashi; Akiko Yamada; Toru Shijo


Journal of home economics | 2002

Heating Characteristics of Steam Convection Ovens

Akiko Yamada; Satomi Sugiyama; Shoko Shibukawa


Archive | 2014

Inducteur pour transmission de puissance sans fil

徹 司城; Tetsu Shijo; 亜希子 山田; Akiko Yamada; 尾林 秀一; Shuichi Obayashi


Archive | 2014

Foreign substance detecting device, wireless power transmission device, and wireless power transmission system

Kohei Onizuka; Tetsu Shijo; Fumi Moritsuka; Akiko Yamada


Archive | 2014

インダクタユニット、無線電力伝送装置、及び電動車両

徹 司城; Tetsu Shijo; 健一郎 小川; Kenichirou Ogawa; 亜希子 山田; Akiko Yamada; 大舘 紀章; Noriaki Oodachi; 尾林 秀一; Shuichi Obayashi


Archive | 2014

異物検出装置、無線電力伝送装置、及び無線電力伝送システム

浩平 鬼塚; Kohei Onizuka; 徹 司城; Tooru Tsukasagi; 芙美 杜塚; Fumi Moritsuka; 亜希子 山田; Akiko Yamada

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