Presentation 2015-04-17
Power Efficiency Formula for Unit LC Circuit to Match Complex-Impedance Ports
Kyohei Yamada, Naoki Sakai, Takashi Ohira,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The efficiency of an L-shaped matching circuit consisting of two reactive elements is formulated. The efficiency formula is given in terms of the two port impedances to match, and the quality factors of the reactive elements. ("quality factor" means |x|/r of impedance Z=r+jx.) Since the formula is valid even if the port impedances are complex, or have reactances, it is useful for applications say wireless power transmission in which load impedances tend to have large reactances. There are at least two configurations available when we are to match two impedances. We also mention these options here and introduce an intuitive procedure to choose the most efficient one using Manhattan distance and Voronoi map.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) matching circut / lumped-constant element / power efficiency / quality factor / Manhattan distance / Voronoi map
Paper # WPT2015-16,MW2015-16
Date of Issue 2015-04-09 (WPT, MW)

Conference Information
Committee WPT / MW
Conference Date 2015/4/16(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) Microwave technologies for Wireless Power Transfer, Superconducting Microwave technologies, Microwave technologies, etc.
Chair Naoki Shinohara(Kyoto Univ.) / Futoshi Kuroki(Kure National College of Tech.)
Vice Chair / Masashi Nakatsugawa(NTT) / Takao Kuki(NHK-ES) / Koji Yamanaka(Mitsubishi Electric)
Secretary (Sendai National College of Tech.) / Masashi Nakatsugawa(Kagoshima Univ.) / Takao Kuki(NEC) / Koji Yamanaka(NTT)
Assistant Hiroshi Hirayama(Nagoya Inst. of Tech.) / Takashi Hikagae(Hokkaido Univ.) / Masataka Ohira(Saitama Univ.) / Ryo Ishikawa(Univ. of Electro-Comm.)

Paper Information
Registration To Technical Committee on Wireless Power Transfer / Technical Committee on Microwaves
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Power Efficiency Formula for Unit LC Circuit to Match Complex-Impedance Ports
Sub Title (in English) Expression Featuring Manhattan Distance and Voronoi Diagram
Keyword(1) matching circut
Keyword(2) lumped-constant element
Keyword(3) power efficiency
Keyword(4) quality factor
Keyword(5) Manhattan distance
Keyword(6) Voronoi map
1st Author's Name Kyohei Yamada
1st Author's Affiliation Toyohashi University of Technology(TUT)
2nd Author's Name Naoki Sakai
2nd Author's Affiliation Toyohashi University of Technology(TUT)
3rd Author's Name Takashi Ohira
3rd Author's Affiliation Toyohashi University of Technology(TUT)
Date 2015-04-17
Paper # WPT2015-16,MW2015-16
Volume (vol) vol.115
Number (no) WPT-3,MW-4
Page pp.pp.81-85(WPT), pp.81-85(MW),
#Pages 5
Date of Issue 2015-04-09 (WPT, MW)