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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 14 of 14  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
CS, CAS 2020-02-28
13:15
Kumamoto   A Study on Circuit Element Value Mismatches and Occupied Area of Poly-phase Circuits
Takafumi Yamaji (Sojo Univ.), Akio Shimizu (NIT, Ariake College) CAS2019-120 CS2019-120
An effect of the circuit element value error to modulated signal error in polyphase circuits is described. The sensitivi... [more] CAS2019-120 CS2019-120
pp.131-136
CS, CAS 2018-03-13
13:40
Fukuoka Nishijin Plaza, Kyushu University A proposal of an analog poly-phase integrator with a complex coefficient
Takafumi Yamaji (Sojo Univ.), Akio Shimizu (NIT Ariake College) CAS2017-154 CS2017-108
A design method for a poly-phase filter is described. Poly-phase circuits are required for analog signal processing afte... [more] CAS2017-154 CS2017-108
pp.119-122
CAS, SIP, MSS, VLD, SIS [detail] 2014-07-10
15:40
Hokkaido Hokkaido University [Panel Discussion] Management of Technical Committees for Promoting Innovation
Kunihiko Hiraishi (JAIST), Takafumi Yamaji (Toshiba), Shigetoshi Nakatake (Univ. of Kitakyushu), Yoshinobu Kajikawa (Kansai Univ.), Satoshi Yamane (Kanazawa Univ.) CAS2014-32 VLD2014-41 SIP2014-53 MSS2014-32 SIS2014-32
The four technical committees of System and Signal Processing Subsociety have been holding joint workshop since 2010. We... [more] CAS2014-32 VLD2014-41 SIP2014-53 MSS2014-32 SIS2014-32
p.169
NLP, CAS 2012-09-20
15:55
Kochi Eikokuji Campus, University of Kochi [Invited Talk] All-Digital Background Calibration for Time-Interleaved ADC Using Pseudo Aliasing Signal
Junya Matsuno, Takafumi Yamaji, Masanori Furuta, Tetsuro Itakura (Toshiba) CAS2012-37 NLP2012-63
A new adaptive background calibration for gain mismatches and sample-time mismatches in a Time-Interleaved Analog-to-Dig... [more] CAS2012-37 NLP2012-63
pp.41-44
CAS 2012-01-20
10:25
Fukuoka Kyushu Univ. [Invited Talk] Balanced Three-Phase Analog Signal Processing and Circuits for Radio Communication
Takafumi Yamaji (Toshiba) CAS2011-103
Radio communication systems often use two analog signals as real and imaginary parts of a complex number, and the two si... [more] CAS2011-103
pp.99-102
CAS 2011-01-25
16:30
Kumamoto Kumamoto University Noise analysis of harmonic rejection downconverters
Takafumi Yamaji, Junya Matsuno, Tetsuro Itakura (Toshiba) CAS2010-93
Switching downconverters are sensitive to the harmonic signals that are undesired at multiple frequencies of the LO freq... [more] CAS2010-93
pp.51-54
CAS, NLP 2007-10-18
15:10
Tokyo Musashi Institute of Technology Genaration of Symmetric Three-Phase Signal by Means of RC Polyphase Filter and Interpolator
Hiroshi Tanimoto, Koichi Kuwahara (Kitami Inst. of Tech.), Takafumi Yamaji (Toshiba Corp.) CAS2007-48 NLP2007-76
A differential to symmetrical three-phase signal converter circuit based on a n RC polyphase filter and a resistive inte... [more] CAS2007-48 NLP2007-76
pp.79-86
CAS 2007-01-29
13:50
Ehime Ehime Univ. Noise analyses of single to poly-phase conversion with a frequency converter
Takafumi Yamaji, Tetsuro Itakura (Toshbia), Hiroshi Tanimoto (Kitami Institute of Technology)
 [more] CAS2006-64
pp.13-18
ICD, ITE-CE 2006-12-14
10:15
Hiroshima   Low-Power A/D Converters for Wireless Applications
Tomohiko Ito, Takeshi Ueno, Daisuke Kurose, Takafumi Yamaji, Tetsuro Itakura (Toshiba)
 [more] ICD2006-146
pp.19-24
NLP, CAS 2006-10-05
11:15
Osaka   A study on a 3-phase analog-to-digital converter
Takafumi Yamaji, Takeshi Ueno, Tetsuro Itakura (Toshiba)
 [more] CAS2006-39 NLP2006-62
pp.29-33
RCS, AP, WBS, SR, MW, MoNA
(Joint)
2006-03-03
14:40
Kanagawa YRP A Study on Clock Signal Generator for Software Defined Radio
Akihide Sai, Takafumi Yamaji, Tetsuro Itakura (Toshiba)
 [more] SR2005-72
pp.41-45
ICD 2005-12-16
13:25
Kochi   200 MSPS Low-Power A-to-D and D-to-A Converters for Next Generation Mobile Communication System
Daisuke Kurose, Takafumi Yamaji, Takeshi Ueno, Tomohiko Ito, Tetsuro Itakura, Akihide Sai (Toshiba Corp.)
For the next generation mobile communication system, high-speed and low power analog-to-digital converters (ADCs) and di... [more] ICD2005-200
pp.49-54
SR 2005-11-25
09:15
Okinawa Okinawa Wemen's Center 200 MSPS Low-Power A-to-D and D-to-A Converters for Next Generation Mobile Communication System
Takafumi Yamaji, Daisuke Kurose, Takeshi Ueno, Tomohiko Ito, Tetsuro Itakura, Akihide Sai (Toshiba)
For the next generation mobile communication system, high-speed and low power analog-to-digital converters (ADCs) and di... [more] SR2005-53
pp.43-48
SR 2005-07-28
- 2005-07-29
Kanagawa Yokosuka Research Park A low-power analog-to-digital converter for the next generation mobile communication system
Takafumi Yamaji, Tomohiko Ito, Daisuke Kurose, Takeshi Ueno, Tetsuro Itakura (Toshiba)
For the next generation mobile communication system, the estimated requirements for analog-to-digital converters (ADCs) ... [more] SR2005-41
pp.137-141
 Results 1 - 14 of 14  /   
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