Hiroshi TANIMOTO


Power Reduction of Variable Wordlength OFDM Receiver in Time-Varying Fading Channels by Monitoring Subcarrier SNRs
Shingo YOSHIZAWA Daichi SASAKI Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 330-337
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
wireless communicationvariable wordlengthOFDMdigital signal processing circuits
 Summary | Full Text:PDF

VLSI Implementation of an Interference Canceller Using Dual-Frame Processing for OFDM-IDMA Systems
Shingo YOSHIZAWA Mai NOZAKI Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/03/01
Vol. E98-A  No. 3  pp. 811-819
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
OFDM-IDMAinterference cancellerVLSI architecture
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Exact Design of RC Polyphase Filters and Related Issues
Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/02/01
Vol. E96-A  No. 2  pp. 402-414
Type of Manuscript:  INVITED PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
RC polyphase filtersexact transfer function designelement value designcoefficient matchingcascade synthesisButterworth responseequal ripple response
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Design of 1 V Operating Fully Differential OTA Using NMOS Inverters in 0.18 µm CMOS Technology
Atsushi TANAKA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/06/01
Vol. E92-C  No. 6  pp. 822-827
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
low power supply voltagelarge output swingfully differential OTANMOS inverters
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A Very Wideband Active RC Polyphase Filter with Minimum Element Value Spread Using Fully Balanced OTA Based on CMOS Inverters
Keishi KOMORIYAMA Makoto YASHIKI Eiichi YOSHIDA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/06/01
Vol. E91-C  No. 6  pp. 879-886
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
active RC polyphase filterfully differential OTACMOS inverterwidebandelement value spread
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Transfer Function Preserving Transformations on Equal-Ripple RC Polyphase Filters for Reducing Design Efforts
Hiroaki TANABE Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/02/01
Vol. E90-A  No. 2  pp. 333-338
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
RC polyphase filterequal rippletransfer function preserving transformationelement value spread
 Summary | Full Text:PDF

Design Considerations for RC Polyphase Filters with Simultaneously Equal Ripple Both in Stopband and Passband
Hiroaki TANABE Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/02/01
Vol. E89-A  No. 2  pp. 461-464
Type of Manuscript:  Special Section LETTER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
RC polyphase filterequal rippleelement value designimage rejectionanalog complex coefficient filters
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Nonlinear Analysis of Bipolar Harmonic Mixer for Direct Conversion Receivers
Hiroshi TANIMOTO Ryuta ITO Takafumi YAMAJI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/06/01
Vol. E88-C  No. 6  pp. 1203-1211
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: RF
Keyword: 
harmonic mixerBHMIXtheoretical analysisdown conversion mixerconversion gainIIP3IIP2self-mixingdc offsetnoise analysiscyclostationary noise
 Summary | Full Text:PDF

FOREWORD
Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 1007-1008
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF

A Low Offset 1.9-GHz Direct Conversion Receiver IC with Spurious Free Dynamic Range of over 67 dB
Shoji OTAKA Takafumi YAMAJI Ryuichi FUJIMOTO Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 513-519
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
Category: 
Keyword: 
direct conversion receiverdouble balanced mixervariable gain amplifieron-chip balun90 phase-shifter
 Summary | Full Text:PDF

High-Frequency Device-Modeling Techniques for RF-CMOS Circuits
Ryuichi FUJIMOTO Osamu WATANABE Fumie FUJII Hideyuki KAWAKITA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 520-528
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques Supporting the System LSI Era)
Category: 
Keyword: 
device modelmodel parameterscalinggeometric parameterprocess parameter
 Summary | Full Text:PDF

A 2-Vpp Linear Input-Range Fully Balanced CMOS Transconductor and Its Application to a 2.5-V 2.5-MHz Gm-C LPF
Tetsuro ITAKURA Takashi UENO Hiroshi TANIMOTO Tadashi ARAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/25
Vol. E83-A  No. 11  pp. 2295-2302
Type of Manuscript:  PAPER
Category: Analog Signal Processing
Keyword: 
analog signal processingintegrated electronicsfully balanced CMOS transconductorcommon-mode rejection ratio
 Summary | Full Text:PDF

Broadband and Flexible Receiver Architecture for Software Defined Radio Terminal Using Direct Conversion and Low-IF Principle
Hiroshi TSURUMI Hiroshi YOSHIDA Shoji OTAKA Hiroshi TANIMOTO Yasuo SUZUKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Vol. E83-B  No. 6  pp. 1246-1253
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
Category: 
Keyword: 
software defined radiodirect conversionlow-IFchannel selectionimage rejection
 Summary | Full Text:PDF

A Digital-to-RF Converter Architecture Suitable for a Digital-to-RF Direct-Conversion Software Defined Radio Transmitter
Takafumi YAMAJI Akira YASUDA Hiroshi TANIMOTO Yasuo SUZUKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Vol. E83-B  No. 6  pp. 1254-1260
Type of Manuscript:  Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
Category: 
Keyword: 
DACdigital-to-RF direct-conversionsoftware defined radioΔΣ modulation
 Summary | Full Text:PDF

System-Level Compensation Approach to Overcome Signal Saturation, DC Offset, and 2nd-Order Nonlinear Distortion in Linear Direct Conversion Receiver
Hiroshi TSURUMI Miyuki SOEYA Hiroshi YOSHIDA Takafumi YAMAJI Hiroshi TANIMOTO Yasuo SUZUKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/05/25
Vol. E82-C  No. 5  pp. 708-716
Type of Manuscript:  Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits)
Category: 
Keyword: 
direct conversion receiverlinear modulation schemeRF stage gain controlinitial burst acquisitionDC offset canceler2nd-order intermodulation distortion
 Summary | Full Text:PDF

A 1.9-GHz Direct Conversion Transmitter IC with Low Power On-Chip Frequency Doubler
Shoji OTAKA Ryuichi FUJIMOTO Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2  pp. 313-319
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
frequency doublerquadrature modulatorvariable attenuatortransmitterPHS(Personal Handy-Phone System)90phase-shifterECL-EXOR
 Summary | Full Text:PDF

Design of Fully Balanced Analog Systems Based on Ordinary and/or Modified Single-Ended Opamps
Zdzis taw CZARNUL Tetsuro ITAKURA Noriaki DOBASHI Takashi UENO Tetsuya IIDA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2  pp. 256-270
Type of Manuscript:  INVITED PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
fully balanced systemanalog circuitsintegrated circuitfilterintegratoramplifier
 Summary | Full Text:PDF

FOREWORD
Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2  pp. 255-255
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF

A 1. 5 GHz CMOS Low Noise Amplifier
Ryuichi FUJIMOTO Shoji OTAKA Hiroshi IWAI Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/03/25
Vol. E81-A  No. 3  pp. 382-388
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 10th Karuizawa Workshop on Circuits and Systems)
Category: 
Keyword: 
low noise amplifierCMOS technologyshort channelinductorhigh frequency circuit
 Summary | Full Text:PDF

Separation of Phase Noise from Amplitude Noise in Oscillator Simulation
Makiko OKUMURA Hiroshi TANIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/08/25
Vol. E80-A  No. 8  pp. 1525-1528
Type of Manuscript:  LETTER
Category: Modeling and Simulation
Keyword: 
circuit simulationoscillatorperiodic time-varying circuitphase noise
 Summary | Full Text:PDF

An Adder-Free Method for a Small Size π/4 Shift QPSK Signal Generator
Akira YASUDA Hiroshi TANIMOTO Chikau TAKAHASHI Akira YAMAGUCHI Masayuki KOIZUMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/02/25
Vol. E80-A  No. 2  pp. 291-295
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques for System-on-Chip Integration)
Category: 
Keyword: 
analog circuits and signal processingQPSK signal generatordelta-sigma modulatorintergrated electronics
 Summary | Full Text:PDF

1.9 GHz Si Direct Conversion Receiver IC for QPSK Modulation Systems
Chikau TAKAHASHI Ryuichi FUJIMOTO Satoshi ARAI Tetsuro ITAKURA Takashi UENO Hiroshi TSURUMI Hiroshi TANIMOTO Shuji WATANABE Kenji HIRAKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5  pp. 644-649
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
direct conversion receiver2nd-order distortionQPSK
 Summary | Full Text:PDF

Design Study on RF Stage for Miniature PHS Terminal
Hiroshi TSURUMI Tadahiko MAEDA Hiroshi TANIMOTO Yasuo SUZUKI Masayuki SAITO Kunio YOSHIHARA Kenji ISHIDA Naotaka UCHITOMI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5  pp. 629-635
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
direct conversion, personal handy phone systemRF functional circuit modulebump interconnection technique
 Summary | Full Text:PDF

FOREWORD
Hiroshi TANIMOTO Hisashi YAMADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/03/25
Vol. E79-A  No. 3  pp. 273-274
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF

Design Considerations for High Frequency Active Bandpass Filters
Mikio KOYAMA Hiroshi TANIMOTO Satoshi MIZOGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/02/25
Vol. E76-A  No. 2  pp. 164-173
Type of Manuscript:  Special Section PAPER (Special Section on High-Speed Analog Circuits and Signal Processing)
Category: 
Keyword: 
integrated electronicselectronic circuitstransconductor-capacitor filterhigh frequencyanalog signal processing
 Summary | Full Text:PDF