Yuji Murayama
Sony Broadcast & Professional Research Laboratories
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Publication
Featured researches published by Yuji Murayama.
ieee mtt s international microwave workshop series on innovative wireless power transmission | 2012
Shinichi Fukuda; Hiroaki Nakano; Yuji Murayama; Tomomichi Murakami; Osamu Kozakai; Kenichi Fujimaki
A novel foreign-metal detection-system for wireless power transfer (WPT) is described. Foreign metal was heated only when placed between the primary coil and the secondary coil. By having the metal in that position, the quality factor of the secondary coil (Q2) decreased rather than other parameters, so Q2 was a suitable parameter for detecting the metal. We developed s Q2 measurement circuit that works without any battery in the secondary device, and also developed a prototype WPT system with the Q2 measurement circuit. Using this system, foreign metal that might be heated could be detected before heating.
Archive | 2011
Osamu Kozakai; Takashi Miyamoto; Yuji Murayama
Archive | 2011
Yuji Murayama
Archive | 2011
Yuji Murayama; Kenichi Fujimaki
Archive | 2012
Yuji Murayama; Hiroaki Nakano; Shinichi Fukuda
Archive | 2012
Hiroaki Nakano; Shinichi Fukuda; Yuji Murayama; Kenichi Fujimaki; Tomomichi Murakami
Archive | 2012
Tomomichi Murakami; Hiroaki Nakano; Takaaki Hashiguchi; Yoshitaka Yoshino; Shinji Komiyama; Osamu Kozakai; Shinichi Fukuda; Yuji Murayama; Keigo Bunsen
Archive | 2011
Hiroaki Nakano; 裕章 中野; Shinichi Fukuda; 伸一 福田; Yuji Murayama; 雄ニ 村山; Kenichi Fujimaki; 健一 藤巻; Tomomichi Murakami; 知倫 村上
Archive | 2005
Yuji Murayama; Susumu Kusakabe; Katsuyuki Tanaka
Archive | 2012
Hiroaki Nakano; 裕章 中野; Shinichi Fukuda; 伸一 福田; Yuji Murayama; 雄二 村山; Kenichi Fujimaki; 健一 藤巻; Tomomichi Murakami; 知倫 村上
