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    (Last updated : 2022-09-30 16:28:14)
  Yamaji Takafumi
   Department   SOJO UNIVERSITY  Department of Computer and Information Sciences, FACULTY OF COMPUTER AND INFORMATIONSCIENCES
   Position  
■ Book and thesis
1. 2020/09 Article A study of Noise and Occupied Area of Poly-Phase Circuit The IEICE Transaction on Fundamentals of Electronics, Communications and Computer Sciences pp.201-209 (Collaboration)  Link
2. 2013/05 Article All-Digital Background Calibration Technique for Time-Interleaved ADC Using Pseudo Aliasing Signal IEEE Transaction On Circuits and Systems I: Regular Papers 60(5),pp.1113-1121 (Collaboration)  Link
3. 2011/10 Article Harmonic Signal Rejection Schemes of Polyphase Downconverters IEEE Transaction On Circuits and Systems I: Regular Papers 58(10),pp.2308-2317 (Collaboration)  Link
4. 2010/02 Article A Direct Conversion Receiver Adopting Balanced Three-Phase Analog System  E93-A(2),pp.367-374 (Collaboration)  Link
5. 2008/06 Article 55-mW, 1.2-V, 12-bit, 100-MSPS Pipeline ADCs for Wireless Receivers  E91-C(6),pp.887-893 (Collaboration)  Link
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■ Academic conference presentation
1. 2019/08/22 A Study on Noise and Occupied Area of Poly-phase Circuits (The 32nd Workshop on Circuits and Systems)
2. 2018/03/13 A proposal of an analog poly-phase integrator with complex coefficient
3. 2012/06 A -70dBm-sensitivity 522Mbps 0.19nJ/bit-TX 0.43nJ/bit-RX transceiver for TransferJetTM SoC in 65nm CMOS (Symposium on VLSI Circuits) Link
4. 2012/05 All-digital background calibration for time-interleaved ADC (IEEE International Symposium on Circuits and Systems (ISCAS)) Link
5. 2011/02 A 570 fsrms integrated-jitter ring-VCO-based 1.21GHz PLL with hybrid loop (IEEE International Solid-State Circuits Conference (ISSCC)) Link
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■ Academic background
1. Graduate School, Division of Information Systems, Kyushu University, Doctor of engineering
2. 1988/04~1990/03 〔Master Course〕, Graduate School, Division of Engineering, Kyushu University, Completed,
3. 1984/04~1988/03 Faculty of Engineering, Kyushu University, Graduated,
■ Business career
1. 2016/04~ SOJO UNIVERSITY FACULTY OF COMPUTER AND INFORMATIONSCIENCES Department of Computer and Information Sciences
2. 1990/04~2016/03 Toshiba Corp. Link
3. 2017/04~ Graduate School of Engineering /(DC)Division of Applied Information Sciences
4. 2017/04~ Graduate School of Engineering /Division of Applied Information Sciences
■ Present specialized field
Electron device and electronic equipment, Communication and network engineering, Control and system engineering 
■ Acquisition patent
1. 2016/03/08 Radio apparatus
2. 2015/08/04 Fractional frequency dividing circuit and transmitter
3. 2015/03/31 Semiconductor device and receiver
4. 2015/02/15 Radio apparatus
5. 2014/02/25 Time error estimating device, error correction device and A/D converter
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1.  :  Link