Koji KOTANI


Efficiency Improvement in Photovoltaic-Assisted CMOS Rectifier with Symmetric and Voltage-Boost PV-Cells
Koji KOTANI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 500-507
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
energy harvestingrectifierphotovoltaic cell
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A Photovoltaic-Assisted CMOS Rectifier for Synergistic Energy Harvesting from Ambient Radio Waves
Koji KOTANI Takumi BANDO Yuki SASAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/04/01
Vol. E97-C  No. 4  pp. 245-252
Type of Manuscript:  Special Section PAPER (Special Section on Solid-State Circuit Design,---,Architecture, Circuit, Device and Design Methodology)
Category: 
Keyword: 
energy harvestingphotovoltaicradio wavesrectifier
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Highly Reliable and Drivability-Enhanced MOS Transistors with Rounded Nanograting Channels
Takashi ITO Xiaoli ZHU Shin-Ichiro KUROKI Koji KOTANI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/11/01
Vol. E93-C  No. 11  pp. 1638-1644
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
nanogratingcurrent driveeffective mobilityreliabilityTDDBNBTI
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Self-Vth-Cancellation High-Efficiency CMOS Rectifier Circuit for UHF RFIDs
Koji KOTANI Takashi ITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/01/01
Vol. E92-C  No. 1  pp. 153-160
Type of Manuscript:  PAPER
Category: Integrated Electronics
Keyword: 
radio frequency identification (RFID)ultra-high frequency (UHF)rectifierself-Vth-cancellationpower conversion efficiency (PCE)
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Characteristics of Nano-Grating N-Channel MOSFETs for Improved Current Drivability
Xiaoli ZHU Shin-Ichiro KUROKI Koji KOTANI Hideharu SHIDO Masatoshi FUKUDA Yasuyoshi MISHIMA Takashi ITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/09/01
Vol. E90-C  No. 9  pp. 1830-1836
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
nano-gratingtransconductanceeffective mobilitycurrent-drivability
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Performance Comparison between Equal-Average Equal-Variance Equal-Norm Nearest Neighbor Search (EEENNS) Method and Improved Equal-Average Equal-Variance Nearest Neighbor Search (IEENNS) Method for Fast Encoding of Vector Quantization
Zhibin PAN Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/09/01
Vol. E88-D  No. 9  pp. 2218-2222
Type of Manuscript:  LETTER
Category: Image Processing and Video Processing
Keyword: 
encoding performancefast searchvector quantizationstatistical featuresEEENNS methodIEENNS method
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A 100 MHz 7.84 mm2 31.7 msec 439 mW 512-Point 2-Dimensional FFT Single-Chip Processor
Naoto MIYAMOTO Leo KARNAN Kazuyuki MARUO Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/04/01
Vol. E87-C  No. 4  pp. 502-509
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power System LSI, IP and Related Technologies)
Category: 
Keyword: 
fast Fourier transformcached-memory architecturedouble buffer structure
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A Fast Search Method for Vector Quantization Using Enhanced Sum Pyramid Data Structure
Zhibin PAN Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/03/01
Vol. E87-A  No. 3  pp. 764-769
Type of Manuscript:  LETTER
Category: Image
Keyword: 
fast searchvector quantizationmulti-resolutionsenhanced sum pyramid
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An Improved Fast Encoding Algorithm for Vector Quantization Using 2-Pixel-Merging Sum Pyramid and Manhattan-Distance-First Check
Zhibin PAN Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/02/01
Vol. E87-D  No. 2  pp. 494-499
Type of Manuscript:  LETTER
Category: Image Processing, Image Pattern Recognition
Keyword: 
fast encodingVQ2-pixel-mergingsum pyramidthe Cauchy-Schwarz inequalityManhattan-distance-first
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A Fast Encoding Method for Vector Quantization Using L1 and L2 Norms to Narrow Necessary Search Scope
Zhibin PAN Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/11/01
Vol. E86-D  No. 11  pp. 2483-2486
Type of Manuscript:  LETTER
Category: Image Processing, Image Pattern Recognition
Keyword: 
vector quantizationfast searchL1 and L2 norm
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A Fast Encoding Method for Vector Quantization Based on 2-Pixel-Merging Sum Pyramid Data Structure
Zhibin PAN Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/09/01
Vol. E86-A  No. 9  pp. 2419-2423
Type of Manuscript:  LETTER
Category: Image
Keyword: 
vector quantizationfast search2-pixel-mergingsum pyramid
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Analysis of High-Speed Signal Behavior in a Miniaturized Interconnect
Akihiro MORIMOTO Koji KOTANI Kazushi TAKAHASHI Shigetoshi SUGAWA Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/05/01
Vol. E85-C  No. 5  pp. 1111-1118
Type of Manuscript:  Special Section PAPER (Special Issue on Advanced Sub-0.1 µm CMOS Devices)
Category: 
Keyword: 
giga-scale integrationminiaturized interconnectMaxwell's equationsGHz signal propagationgas-isolated interconnect
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Fast Computational Architectures to Decrease Redundant Calculations -- Eliminating Redundant Digit Calculation and Excluding Useless Data
Makoto IMAI Toshiyuki NOZAWA Masanori FUJIBAYASHI Koji KOTANI Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/09/25
Vol. E82-C  No. 9  pp. 1707-1714
Type of Manuscript:  Special Section PAPER (Special Issue on Integrated Electronics and New System Paradigms)
Category: Processors
Keyword: 
MSD-first architecturedigit-serial architecturenumerical characteristicpreprocessing architecturevector quantization
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Low Power Neuron-MOS Technology for High-Functionality Logic Gate Synthesis
Ho-Yup KWON Koji KOTANI Tadashi SHIBATA Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/07/25
Vol. E80-C  No. 7  pp. 924-930
Type of Manuscript:  Special Section PAPER (Special Issue on New Concept Device and Novel Architecture LSIs)
Category: Novel Concept Devices
Keyword: 
neuron MOSdeep-thresholdlow powerfull addernumber detector
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Impact of High-Precision Processing on the Functional Enhancement of Neuron-MOS Integrated Circuits
Koji KOTANI Tadashi SHIBATA Tadahiro OHMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/03/25
Vol. E79-C  No. 3  pp. 407-414
Type of Manuscript:  Special Section PAPER (Special Issue on Scientific ULSI Manufacturing Technology)
Category: Device Issues
Keyword: 
high-precision processingneuron-MOShigh-functionality circuitultra clean technologymultiple-valued logic
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Self-Aligned Aluminum-Gate MOSFET's Having Ultra-Shallow Junctions Formed by 450 Furnace Annealing
Koji KOTANI Tadahiro OHMI Satoshi SHIMONISHI Tomohiro MIGITA Hideki KOMORI Tadashi SHIBATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/04/25
Vol. E76-C  No. 4  pp. 541-547
Type of Manuscript:  Special Section PAPER (Special Issue on Sub-Half Micron Si Device and Process Technologies)
Category: Device Technology
Keyword: 
aluminum gateself alignultraclean ion-implantation450 furnace annealing
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