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Committee Date Time Place Paper Title / Authors Abstract Paper #
Nara ATR Revisit to Design Theory of Electrically Coupled Resonator WPT System
Ikuo Awai (Ryutech) WPT2017-60
A new finding in an electrically coupled resonator WPT system is introduced contributing to its design. It is on the def... [more] WPT2017-60
MW 2017-11-10
Okinawa Miyakojima Marin Terminal Bldg. Comprehensive evaluation of several spiral resonators with electric field confinement
Tatsuya Hiraiwa, Toshio Ishizaki (Ryukoku Univ), Ikuo Awai (Ryutech) MW2017-141
The working principle, fabrication method, electric field confinement capability, unloaded Q property and susceptibility... [more] MW2017-141
EE, WPT, IEE-SPC [detail] 2017-07-27
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Lecture] 6.78-MHz Current Doubler Rectifier with High-Q Inductor
Kyohei Yamada (TUT) EE2017-10 WPT2017-15
This technical report talks about prototyping of a 6.78-MHz current doubler rectifier in which an inductor with high unl... [more] EE2017-10 WPT2017-15
MW 2017-06-23
Aichi A-101, Wing-A, Toyohashi University of Technology Quadruple-mode cavity resonator aimed at compactness and high Q factor
Takuma Nagao, Atsushi Funayama, Masaya Tamura (TUT) MW2017-30
A multimode resonator is one of the promising solutions to downsize the base station filter. However, minimization of th... [more] MW2017-30
MW 2017-05-19
Osaka Osaka Univ. (Seminar Room1, Osaka Univ. Kaikan) Theoretical Relations between Unloaded Q Factor, Stored Energy, Group Delay, and Insertion Loss Derived from Coupling Matrix of Filter Circuit
Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2017-17
This paper revisits the theoretical relations between (1) unloaded Q factor of resonator, (2) reactive energy stored in ... [more] MW2017-17
MW 2016-12-16
Kanagawa National Defense Academy Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines
Ryo Tomita, Masataka Ohira, Zhewang Ma, Xiaolong Wang (Saitama Univ.) MW2016-157
A coupling matrix extraction technique is very useful for designs and tunings of microwave bandpass filters. In recent y... [more] MW2016-157
MW 2016-05-20
Kyoto Kyoto Univ. A Study on Loss Mechanism and Characteristics of Artificial Dielectric Filter with TE-mode Resonators
Yuto Nakagawa, Toshio Ishizaki (Ryukoku Univ.) MW2016-16
Artificial dielectric is constituted by arranging shorter metal strips than the wavelength in the crystal structure. A l... [more] MW2016-16
EMCJ 2016-05-13
Hokkaido Hokkaido University Proposal and basic study of a transparent water shield for the magnetic ally coupled WPT system -- Toward resolution of EMC problems --
Kentaro Kawabe, Yangjun Zhang (Ryukoku Univ.), Ikuo Awai (Ryutech) EMCJ2016-9
We propose here a transparent electromagnetic shield using tap water. We have obtained a big shield effect for the leaka... [more] EMCJ2016-9
WPT 2016-03-08
Kyoto Kyoto Univ. Uji Campus Theoretical Analysis on the loss mechanism that salt water gives to spiral resonator's unloaded Q
Kentaro Kawabe, Dai Futagami, Yangjun Zhang, Toshio Ishizaki (Ryukoku Univ.), Ikuo Awai (Ryutech) WPT2015-89
We have optimized various kinds of parameters such as the loading capacitors of a spiral resonator, its resonant frequen... [more] WPT2015-89
MW 2015-12-18
Tokyo Tokyo Univ. of Science Evaluation of Transmission Loss of Transmission Line Using Unloaded Q-factors
Yoshihiko Kamo, Koutarou Munetou, Futoshi Kuroki (NIT, Kure College) MW2015-151
Generally, Q-factors of transmission lines are expressed by the wave-number in media, the transmission loss, and the ene... [more] MW2015-151
Overseas TamKang University, Tamsui Campus Optimum Resonator Configuration for Coupled-Resonator Undersea WPT systems
Dai Futagami, Kawabe Kentaro, Toshio Ishizaki (Ryukoku Univ.), Ikuo Awai (Ryutech corp.)
In this report, the magnetically-coupled type resonator used in undersea WPT (Wireless Power Transfer) system was examin... [more]
Okinawa Okinawa Prefectural Museum & Art Museum The effect of salt water for Spiral resonator unloaded Q
Kentaro Kawabe, Dai Futagami, Yangjun Zhang, Toshio Ishizaki (Ryukoku Univ.), Ikuo Awai (Ryutech) WPT2015-60
It is necessary to elucidate the influence of the salt water to a resonator in order to improve the efficiency of the WP... [more] WPT2015-60
(Joint) [detail]
Kyoto   Study on spiral resonator parameters for undersea WPT system
Kentaro Kawabe, Dai Futagami, Yangjun Zhang, Toshio Ishizaki (Ryukoku Univ.), Ikuo Awai (Ryutech) WPT2015-44
The method of forming of the most highly efficient resonator is different from the air in the wireless feeding through t... [more] WPT2015-44
Kyoto Doshisha University Transfer characteristics of undersea WPT system with spiral resonators
Dai Futagami, Yuichi Sawahara, Toshio Ishizaki (Ryukoku Univ), Ikuo Awai (Ryutech Co.) WPT2014-60
We have studied a WPT system for undersea power transfer. A new selection rule to decide the proper resonator diameter i... [more] WPT2014-60
EMCJ, IEE-EMC, MW, EST [detail] 2013-10-25
Miyagi Tohoku Univ. An Extraction Method of Equivalent-Circuit Parameters for Transversal Resonator Array Bandpass Filters Considering Loss Effects
Masataka Ohira, Zhewang Ma (Saitama Univ.) EMCJ2013-81 MW2013-121 EST2013-73
This paper proposes a novel technique for extracting all the equivalent-circuit parameters of a transversal resonator ar... [more] EMCJ2013-81 MW2013-121 EST2013-73
EST, MWP, OPE, MW, EMT, IEE-EMT [detail] 2013-07-19
Hokkaido Wakkanai Synthesis Cultural Center An Insertion-Loss Formula for Transversal Resonator Array Bandpass Filters and Its Verification of Theory and Application
Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2013-85 OPE2013-54 EST2013-49 MWP2013-44
In a direct-coupled resonator filter, which is constructed by cascade connection of resonators, the insertion loss at it... [more] MW2013-85 OPE2013-54 EST2013-49 MWP2013-44
MW 2013-05-31
Kyoto Ryukoku Univ. Study on Propagation-Mode of Wireless Power Transfer System Using Ceramic Dielectric Resonators
Kenta Nishikawa, Toshio Ishizaki (Ryukoku Univ.) MW2013-17
In the conventional resonator-coupled WPT system, coil resonators made of copper wire are usually used. So, unloaded Q o... [more] MW2013-17
RCS, SIP 2010-01-21
Fukuoka Kyushu Univ. A Prototype of Bar-Antenna for MW AM Broadcast Receiver Using New Compound Magnetic Material
Yasuhito Takeuchi (Kagoshima Univ.), Shuji Akaiwa (Mate) SIP2009-91 RCS2009-225
In this study a novel compound soft magnetic material for bar-antenna for MW AM broadcast receiver is proposed, together... [more] SIP2009-91 RCS2009-225
AP 2007-06-21
Tokyo Kikai-Shinko-Kaikan Bldg. The near field diestribution affcting antenna input characteristics
Hiroyuki Arai (Yokohama Natl. Univ.) AP2007-38
This report presents a physical explanation for the equivalent radius surrounding the antenna element. To define an ante... [more] AP2007-38
AP 2007-04-19
Hyogo Kwansei Gakuin Univ. Electrical Volume of Small Antenna -- Current Distribution and Equivalent Sphere Radius --
Hiroyuki Arai (Yokohama Natl. Univ.) AP2007-9
This report proposes an equivalent radius of Chu’s sphere by multiplying the maximum current strength normalized by feed... [more] AP2007-9
 Results 1 - 20 of 20  /   
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