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Takashi Ohira

Affiliation Department of Electrical and Electronic Information Engineering
Title Professor / Director of Research Center for Future Vehicle City
Fields of Research Wave Engineering / RF Circuits / Mobile Power Transfer
Degree Doctor of Engineering, Osaka University
Academic Societies IEEE Fellow / IEICE Fellow
E-mail ohira@
Please append "tut.jp" to the end of the address above.
Laboratory website URL http://www.comm.ee.tut.ac.jp//
Researcher information URL Researcher information

Research

・Takashi Ohira, "Three basic theorems on kQ product in wireless power transfer (invited)," IEEE Distinguished Microwave Lecture in IEEE International Conference on RFID Technology and Applications, Tokyo, Sept. 2015.
・Takashi Ohira, "Welcome to kQ theory for wireless power transfer (invited), " IEEE Distinguished Microwave Lecture, Kyoto, Sept. 2015.
・Takashi Ohira, "Welcome to kQ theory for wireless power transfer (invited), " IEEE Distinguished Microwave Lecture, Sendai, Aug. 2015.
・Takashi Ohira, "How to estimate kQ product from two-port S parameters for wireless power transfer (invited)," IEEE Distinguished Microwave Lecture, Ho Chi Minh City, Aug. 2015.
・Takashi Ohira, "A Lucid View on What Role kQ Product Plays in Electric and/or Magnetic-Coupling Wireless Power Transfer Systems (invited)," IEEE Wireless Power Transfer Conference, WPTC2015, Boulder, May 2015.
・Takashi Ohira, "A lucid design criterion for wireless power transfer systems to enhance their maximum available efficiency (invited)," Asia-Pacific Microwave Conference, APMC2014, pp.1157-1158, Sendai, Nov. 2014.
・Takashi Ohira, "Via-Wheel Power Transfer for Fourth Generation Road Vehicles (invited)," SAE Electric Vehicle Technology Conference, EVTeC2014, pp.20144030, Yokohama, May 2014.
・Takashi Ohira, "Angular expression of maximum power transfer efficiency in reciprocal two-port systems," IEEE Wireless Power Transfer Conference, WPTC2014, pp.228-230, Jeju, May 2014.
・Takashi Ohira, "Basic circuit theory for emerging RF power conversion in future smart grid systems", IEEE Distinguished Microwave Lecture, pp.1-6, Bangkok, Dec. 2013.
・Takashi Ohira, "Circuit Q Factor as a Basic But Still Ambiguous Index for Resonators and Oscillators," EuMA Europian Microwave Doctoral School, Nuremberg, Germany, Oct 2013.
・Takashi Ohira, "Challenge for 4G Mobility", IEEE Distinguished Microwave Lecture, Rome, May 2013.
・Takashi Ohira, "No Oil, No Coil, Just V-WPT", IEEE Distinguished Microwave Lecture, Perugia, May 2013.
・Takashi Ohira, "Via-Wheel Power Transfer to Vehicles in Motion (special talk and exhibition)", IEEE Wireless Power Transfer Conference, WPTC2013, pp.242-246, Perugia, May 2013.
・Takashi Ohira, "V-WPT: A Non-magnetic Non-resonant Wireless Power Transfer to Electric Vehicles (Plenary Speech)", International Forum on Electric Vehicles, Daejeon, Nov. 2012.
・Takashi Ohira, "Via-Wheel Power Transfer V-WPT to Running EVs (invited)", Energy Transfer for Electric Vehicles, Nuremberg, Oct. 2012.
・Takashi Ohira, "Seven Physical Meanings of the Quality Factor in Resonators and Oscillators (Special Talk)", IEICE Integrated Circuits and Devices in Vietnam, Danang, Aug. 2012.
・Takashi Ohira, "Seven different aspects on what role Q factor plays in resonators and oscillators", IEEE MTT-S International Microwave Symposium, IMS2012, Montreal, June 2012.
・Takashi OHIRA, "Maxwellian approach to secret key generation (keynote)", Indonesia-Malaysia Microwave Antenna Conference, IMMAC2010, Plenary Session, Depok, June 2010.
・Takashi OHIRA, "Oscillator Q Factor Formula in Circuit Immittance Domain to Fit Leeson's Spectrum Model," Asia-Pacific Microwave Conference, APMC2009, Special EuMA Session, Singapore, Dec. 2009.
・Takashi OHIRA, "Razavi's Oscillator Theory Interpreted in RF Circuit Port Impedance Domain to Harmonize with Leeson's Sideband Noise Spectrum Model", Proceedings of the 39th European Microwave Conference, pp. 433-438, Rome, Italy, Sep-Oct. 2009.

Title of class

Microwave / RF Circuit Engineering


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