Takashi Ohira
According to our database1,
Takashi Ohira
authored at least 47 papers
between 2001 and 2024.
Collaborative distances:
Collaborative distances:
Awards
IEEE Fellow
IEEE Fellow 2004, "For contributions to variable microwave signal processing circuits and antennas.".
Timeline
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Bibliography
2024
Comprehensive Design Approach to Switch-Mode Resonant Power Amplifiers Exploiting Geodesic-to-Geodesic Impedance Conversion.
IEICE Trans. Electron., 2024
2023
Class-E Synchronous RF Rectifier: Circuit Formulation, Geodesic Trajectory, Time-Domain Simulation, and Prototype Experiment.
IEICE Trans. Electron., November, 2023
2019
Proceedings of the IEEE International Symposium on Circuits and Systems, 2019
2018
IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018
IEICE Trans. Electron., 2018
Power transfer efficiency formulation for reciprocal and non-reciprocal linear passive two-port systems.
IEICE Electron. Express, 2018
2017
Graphical Representation of the Power Transfer Efficiency of Lumped-Element Circuits Based on Hyperbolic Geometry.
IEEE Trans. Circuits Syst. II Express Briefs, 2017
Power Dependent Impedance Measurement Exploiting an Oscilloscope and Möbius Transformation.
IEICE Trans. Electron., 2017
2016
Internal Power Loss Formulas of Lumped-Element Matching Circuits for High-Efficiency Wireless Power Transfer.
IEICE Trans. Electron., 2016
2014
Power division ratio on multi-hop WPT considering coupling of the receiver with two couplers.
IEICE Electron. Express, 2014
Maximum available efficiency formulation based on a black-box model of linear two-port power transfer systems.
IEICE Electron. Express, 2014
Extended <i>k</i>-<i>Q</i> product formulas for capacitive- and inductive-coupling wireless power transfer schemes.
IEICE Electron. Express, 2014
Erratum: Unified active <i>Q</i> factor formula for use in noise spectrum estimation from Leeson's and Hajimiri's models [IEICE Electronics Express Vol 10 (2013) No 24 pp 20130806].
IEICE Electron. Express, 2014
2013
Power efficiency and optimum load formulas on RF rectifiers featuring flow-angle equations.
IEICE Electron. Express, 2013
Unified active <i>Q</i> factor formula for use in noise spectrum estimation from Leeson's and Hajimiri's models.
IEICE Electron. Express, 2013
2012
Dedicated <i>Q</i> factor formulas stemming from oscillation frequency stability against source and load deviations.
IEICE Electron. Express, 2012
2011
Active <i>Q</i> Factor Analysis for Non-uniform Microstrip Stub Colpitts FET Oscillators.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011
IEICE Electron. Express, 2011
2010
Extended Adler's injection locked <i>Q</i> factor formula for general one- and two-port active device oscillators.
IEICE Electron. Express, 2010
2009
Interference Canceller Based on Cycle-and-Add Property for Single User Detection in DS-CDMA.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009
2008
IEEE Trans. Veh. Technol., 2008
IEICE Trans. Electron., 2008
2007
Maximum-Likelihood Array Signal Decoding in the Presence of Block-Wise Stationary Cochannel Interference.
IEEE Trans. Wirel. Commun., 2007
IEEE Trans. Circuits Syst. II Express Briefs, 2007
Employing Coordinated Transmit and Receive Beamforming in Clustering Double-Directional Radio Channel.
EURASIP J. Wirel. Commun. Netw., 2007
2006
IEEE Trans. Inf. Theory, 2006
Spatial Fading Simulator Using a Cavity-Excited Circular Array (CECA) for Performance Evaluation of Antenna Arrays.
IEICE Trans. Commun., 2006
Oscillator frequency spectrum as viewed from resonant energy storage and complex Q factor.
IEICE Electron. Express, 2006
Dimensional extension of Kurokawa's stability criterion for general multi-port device oscillators.
IEICE Electron. Express, 2006
2005
Rigorous Q-factor formulation for one- and two-port passive linear networks from an oscillator noise spectrum viewpoint.
IEEE Trans. Circuits Syst. II Express Briefs, 2005
Perturbation Analysis and Experimental Verification of Intermodulation and Harmonic Distortion for an Anti-Series Varactor Pair.
IEICE Trans. Electron., 2005
IEICE Trans. Commun., 2005
2004
IEICE Electron. Express, 2004
An iterative beamforming and decoding procedure for wireless networks with uncoordinated channel access.
IEEE Commun. Lett., 2004
A CSMA/CA-based medium access scheme for array antenna-enhanced wireless ad hoc networks.
Proceedings of the 1st IEEE International Symposium on Wireless Communication Systems, 2004
Proceedings of the Telecommunications and Networking, 2004
An iterative beamforming technique for OFDM-based wireless networks with uncoordinated channel access.
Proceedings of IEEE International Conference on Communications, 2004
Reactance diversity: proof-of-concept experiments in an indoor multipath-fading environment with a 5-GHz prototype planar ESPAR antenna.
Proceedings of the 1st IEEE Consumer Communications and Networking Conference, 2004
A simple and accurate mathematical model of electronically steerable parasitic array radiator antennas.
Proceedings of the 1st IEEE Consumer Communications and Networking Conference, 2004
2003
Proceedings of the 2003 IEEE Wireless Communications and Networking, 2003
Reception of coded OFDM signals in broad-band fading environments with strong cochannel interference.
Proceedings of the Global Telecommunications Conference, 2003
2002
Proceedings of the 13th IEEE International Symposium on Personal, 2002
Proceedings of the IEEE International Conference on Acoustics, 2002
2001
Proceedings of the 2001 International Symposium on Circuits and Systems, 2001
Proceedings of the 2001 International Symposium on Circuits and Systems, 2001