default search action
Takashi Ohira
Person information
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
2020 – today
- 2024
- [j35]Minoru Mizutani, Takashi Ohira:
Comprehensive Design Approach to Switch-Mode Resonant Power Amplifiers Exploiting Geodesic-to-Geodesic Impedance Conversion. IEICE Trans. Electron. 107(10): 307-314 (2024) - 2023
- [j34]Ryoya Honda, Minoru Mizutani, Masaya Tamura, Takashi Ohira:
Class-E Synchronous RF Rectifier: Circuit Formulation, Geodesic Trajectory, Time-Domain Simulation, and Prototype Experiment. IEICE Trans. Electron. 106(11): 698-706 (2023)
2010 – 2019
- 2019
- [c12]Takashi Ohira, Satoshi Tsukamoto, Naoki Sakai, Shinji Abe, Masayoshi Sugino, Nobukazu Sakura, Kunihiko Sasaki:
Live Demonstration: An HF Capacitive Wireless Power Transfer to a Quad-Rotor Drone. ISCAS 2019: 1 - 2018
- [j33]Takashi Ohira:
Power transfer efficiency formulation for reciprocal and non-reciprocal linear passive two-port systems. IEICE Electron. Express 15(3): 20171196 (2018) - [j32]Sonshu Sakihara, Satoshi Kitabayashi, Naoki Sakai, Takashi Ohira:
Far-End Reactor Matching to a Traveling Load Along an RF Power Transmission Line. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 101-A(2): 396-401 (2018) - [j31]Takashi Ohira:
Power Transfer Theory on Linear Passive Two-Port Systems. IEICE Trans. Electron. 101-C(10): 719-726 (2018) - 2017
- [j30]Sonshu Sakihara, Masaru Takana, Naoki Sakai, Takashi Ohira:
Power Dependent Impedance Measurement Exploiting an Oscilloscope and Möbius Transformation. IEICE Trans. Electron. 100-C(10): 918-923 (2017) - [j29]Kyohei Yamada
, Takashi Ohira:
Graphical Representation of the Power Transfer Efficiency of Lumped-Element Circuits Based on Hyperbolic Geometry. IEEE Trans. Circuits Syst. II Express Briefs 64-II(5): 485-489 (2017) - 2016
- [j28]Kyohei Yamada, Naoki Sakai, Takashi Ohira:
Internal Power Loss Formulas of Lumped-Element Matching Circuits for High-Efficiency Wireless Power Transfer. IEICE Trans. Electron. 99-C(10): 1182-1189 (2016) - 2014
- [j27]Takanari Minami, Takashi Ohira:
Erratum: Unified active Q 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 11(1): 20148001 (2014) - [j26]Akiro Shimada, Shinsuke Ohtake, Yuichi Miyaji, Hideyuki Uehara, Takashi Ohira:
Power division ratio on multi-hop WPT considering coupling of the receiver with two couplers. IEICE Electron. Express 11(5): 20140034 (2014) - [j25]Takashi Ohira:
Extended k-Q product formulas for capacitive- and inductive-coupling wireless power transfer schemes. IEICE Electron. Express 11(9): 20140147 (2014) - [j24]Takashi Ohira:
Maximum available efficiency formulation based on a black-box model of linear two-port power transfer systems. IEICE Electron. Express 11(13): 20140448 (2014) - 2013
- [j23]Takashi Ohira:
Power efficiency and optimum load formulas on RF rectifiers featuring flow-angle equations. IEICE Electron. Express 10(11): 20130230 (2013) - [j22]Takanari Minami, Takashi Ohira:
Unified active Q factor formula for use in noise spectrum estimation from Leeson's and Hajimiri's models. IEICE Electron. Express 10(24): 20130806 (2013) - 2012
- [j21]Takashi Ohira:
Dedicated Q factor formulas stemming from oscillation frequency stability against source and load deviations. IEICE Electron. Express 9(7): 616-621 (2012) - 2011
- [j20]Keizo Inagaki, Takashi Ohira, Tetsuya Kawanishi, Masayuki Izutsu:
Beam steering array antenna controlled by optical wavelength. IEICE Electron. Express 8(15): 1221-1227 (2011) - [j19]Tuya Wuren, Takashi Ohira:
Active Q Factor Analysis for Non-uniform Microstrip Stub Colpitts FET Oscillators. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 94-A(2): 583-591 (2011) - 2010
- [j18]Takashi Ohira:
Extended Adler's injection locked Q factor formula for general one- and two-port active device oscillators. IEICE Electron. Express 7(19): 1486-1492 (2010)
2000 – 2009
- 2009
- [j17]Ranga Hettiarachchi, Mitsuo Yokoyama, Hideyuki Uehara, Takashi Ohira:
Interference Canceller Based on Cycle-and-Add Property for Single User Detection in DS-CDMA. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 92-A(1): 298-306 (2009) - 2008
- [j16]Takashi Ohira, Tuya Wuren:
Pseudolinear Circuit Theory for Sinusoidal Oscillator Performance Maximization. IEICE Trans. Electron. 91-C(11): 1726-1737 (2008) - [j15]Chen Sun, Thomas Hunziker, Jun Cheng, Makoto Taromaru, Takashi Ohira:
Optimal Frame Splitting for Downlink MIMO Channels With Distributed Antenna Arrays. IEEE Trans. Veh. Technol. 57(6): 3848-3854 (2008) - 2007
- [j14]Chen Sun, Makoto Taromaru, Takashi Ohira:
Employing Coordinated Transmit and Receive Beamforming in Clustering Double-Directional Radio Channel. EURASIP J. Wirel. Commun. Netw. 2007 (2007) - [j13]Takashi Ohira, Kiyomichi Araki:
Active Q-Factor and Equilibrium Stability Formulation for Sinusoidal Oscillators. IEEE Trans. Circuits Syst. II Express Briefs 54-II(9): 810-814 (2007) - [j12]Thomas Hunziker, Jacir Luiz Bordim, Makoto Taromaru, Takashi Ohira:
Maximum-Likelihood Array Signal Decoding in the Presence of Block-Wise Stationary Cochannel Interference. IEEE Trans. Wirel. Commun. 6(4): 1476-1487 (2007) - 2006
- [j11]Takashi Ohira, Kiyomichi Araki:
Dimensional extension of Kurokawa's stability criterion for general multi-port device oscillators. IEICE Electron. Express 3(7): 143-148 (2006) - [j10]Takashi Ohira, Kiyomichi Araki:
Oscillator frequency spectrum as viewed from resonant energy storage and complex Q factor. IEICE Electron. Express 3(16): 385-389 (2006) - [j9]Chulgyun Park, Jun-ichi Takada
Spatial Fading Simulator Using a Cavity-Excited Circular Array (CECA) for Performance Evaluation of Antenna Arrays. IEICE Trans. Commun. 89-B(3): 906-913 (2006) - [j8]Takashi Ohira:
Special Section on Emerging Microwave Techniques. IEICE Trans. Electron. 89-C(12): 1796-1797 (2006) - [j7]Jun Cheng, Takashi Ohira, Koichi Kamoi, Yoichiro Watanabe:
Spreading Set With Error Correction for Multiple-Access Adder Channel. IEEE Trans. Inf. Theory 52(12): 5524-5529 (2006) - 2005
- [j6]Qing Han, Keizo Inagaki, Takashi Ohira:
Perturbation Analysis and Experimental Verification of Intermodulation and Harmonic Distortion for an Anti-Series Varactor Pair. IEICE Trans. Electron. 88-C(1): 89-97 (2005) - [j5]Qing Han, Brett Hanna, Takashi Ohira:
A Compact Espar Antenna with Planar Parasitic Elements on a Dielectric Cylinder. IEICE Trans. Commun. 88-B(6): 2284-2290 (2005) - [j4]Takashi Ohira:
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 52-II(12): 846-850 (2005) - 2004
- [j3]Thomas Hunziker, Tomoyuki Aono, Takashi Ohira:
An iterative beamforming and decoding procedure for wireless networks with uncoordinated channel access. IEEE Commun. Lett. 8(4): 256-258 (2004) - [j2]Takashi Ohira:
Mathematical proof of Leeson's oscillator noise spectrum model. IEICE Electron. Express 1(5): 109-114 (2004) - [j1]Kehu Yang, Takashi Ohira, Yimin Zhang, Chong-Yung Chi:
Super-exponential blind adaptive beamforming. IEEE Trans. Signal Process. 52(6): 1549-1563 (2004) - [c11]Kyouichi Iigusa, Takashi Ohira:
A simple and accurate mathematical model of electronically steerable parasitic array radiator antennas. CCNC 2004: 312-315 - [c10]Takuma Sawaya, Kyouichi Iigusa, Makoto Taromaru, Takashi Ohira:
Reactance diversity: proof-of-concept experiments in an indoor multipath-fading environment with a 5-GHz prototype planar ESPAR antenna. CCNC 2004: 678-680 - [c9]Thomas Hunziker, Tomoyuki Aono, Takashi Ohira:
An iterative beamforming technique for OFDM-based wireless networks with uncoordinated channel access. ICC 2004: 2751 - [c8]Thomas Hunziker, Jacir Luiz Bordim, Takashi Ohira, Shinsuke Tanaka:
An Interference Avoidance Technique for Ad Hoc Networks Employing Array Antennas. ICT 2004: 43-52 - [c7]Thomas Hunziker, Jacir Luiz Bordim, Takashi Ohira, Shinsuke Tanaka:
A CSMA/CA-based medium access scheme for array antenna-enhanced wireless ad hoc networks. ISWCS 2004: 230-234 - 2003
- [c6]Thomas Hunziker, Masaya Hashiguchi, Takashi Ohira:
Reception of coded OFDM signals in broad-band fading environments with strong cochannel interference. GLOBECOM 2003: 2310-2314 - [c5]Eddy Taillefer, Cyril Plapous, Jun Cheng, Kyouichi Iigusa, Takashi Ohira:
Reactance-domain MUSIC for ESPAR antennas (experiment). WCNC 2003: 98-102 - 2002
- [c4]Kehu Yang, Takashi Ohira, Yimin Zhang, Chong-Yung Chi:
A super-exponential blind adaptive beamforming algorithm. ICASSP 2002: 3073-3076 - [c3]Takashi Ohira:
Analog smart antennas: an overview. PIMRC 2002: 1502-1506 - 2001
- [c2]Takashi Ohira:
Emerging adaptive antenna techniques for wireless ad-hoc networks. ISCAS (4) 2001: 858-861 - [c1]Koichi Gyoda, Youiti Kado, Yuichiro Ohno, Kazuo Hasuike, Takashi Ohira:
WACNet - Wireless Ad-hoc Community Network. ISCAS (4) 2001: 862-865
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from ,
, and
to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and
to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from .
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-10-16 20:25 CEST by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint
dblp was originally created in 1993 at:
since 2018, dblp has been operated and maintained by:
the dblp computer science bibliography is funded and supported by: