Naoki SAKAI


Power Dependent Impedance Measurement Exploiting an Oscilloscope and Möbius Transformation
Sonshu SAKIHARA Masaru TAKANA Naoki SAKAI Takashi OHIRA 
Publication:   
Publication Date: 2017/10/01
Vol. E100-C  No. 10  pp. 918-923
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
nonlinear impedance measurementMöbius transformationoscilloscopemeasurabilityRF rectifier
 Summary | Full Text:PDF(3.3MB)

Internal Power Loss Formulas of Lumped-Element Matching Circuits for High-Efficiency Wireless Power Transfer
Kyohei YAMADA Naoki SAKAI Takashi OHIRA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/10/01
Vol. E99-C  No. 10  pp. 1182-1189
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
wireless power transferimpedance matchingQ factorinternal lossformulation
 Summary | Full Text:PDF(541.5KB)