FACULTY
Research and Industry-Academia Collaboration
研究・産学連携
TSUKAHARA Tsuneo
Chairperson of the Board of Executives (President), Director of Office for Planning and Promotion
- Affiliation
- University of AIZU
- Title
- Chairperson of the Board of Executives (President), Director of Office for Planning and Promotion
- tsuka@u-aizu.ac.jp
Education
- Courses - Undergraduate
- Until AY2021: CSE Exercise I, Semiconductor Devices, Electronics
- Courses - Graduate
- D04 Career Design for the Doctor Program, Until AY2021: SYC01 MOS Device Modeling for VLSI Design
Research
- Specialization
-
Communication and network engineering
Electron device and electronic equipment
Design of Analog and Radio Frequency (RF) Integrated Circuits for Wireless Communication Systems
- Educational Background, Biography
-
March 1975: Graduated from Aizu High School, Fukushima, Japan
March 1979: B.S. in Applied Physics, Tohoku University, Japan
March 1981: M.S. in Applied Physics, Tohoku University, Japan
April 1981: Entered Nippon Telegraph and Telephone Public Corporation (Now NTT)
July 1987: Research Engineer, NTT LSI Laboratories
Feb. 1993: Senior Research Engineer, NTT Radio Communication System Laboratories
Feb. 1995: Senior Research Engineer, Supervisor, NTT LSI Laboratories
April 1998: Senior Research Engineer, Supervisor, Research Group Leader, NTT System Electronics Laboratories
Sep. 2001: Ph.D. in Electronic Engineering, Tohoku University, Japan
March 2006: Left NTT
April 2006: Full Professor, School of Computer Science and Engineering, University of Aizu
From April 2012 to March 2016: Served as Director General of the Department for Student Affairs
Nov. 2017: Received The 31st Radio Engineering and Electronics Association Award
From April 2018 to March 2020: Served as Director General of the Department for Student Affairs
From April 2020 to March 2022: Dean of School of Computer Science and Engineering
From December 2023: Presidenti & Chairperson of the Board of Executives
- Current Research Theme
- Design of Multi-Band and Multi-Mode RF Transceivers suitable for Software-Defined Radios
- Key Topic
- CMOS Analog Integrated Circuits, CMOS RF Integrated Circuits (RFIC), RF Transceiver, Wireless Communication, Software-Defined Radios, Multi-Band, Multi-Mode
- Affiliated Academic Society
- IEEE, IEICE, Senior member of IEEJ
Others
- Hobbies
- 1. Listening to live music performances
2. Voice training
3. Muscle training
4. Amateur radio operation (from 12 years old): Amateuer First-Class Radio Operator (2018), JA7IIX
- School days' Dream
- 1. Electronics engineer
When I was 8 years old, I made a germanium (Ge)-diode radio-receiver and could hear real AM radio programs. This simple experience made a great impact on my career. Then, this dream became the reality.
2. Airline pilot
- Current Dream
- 1. To foster venture companies conducting "LSI design" in my hometown Aizu-Wakamatsu City or peripheral areas
2. To learn the "Bel Canto" singing method in Italy
- Motto
- Better be the head of a dog than the tail of a lion. （鶏口牛後）
- Favorite Books
- 1. Harmonics (Akikazu Nakamura, Shunjusha)
A bamboo-flute (Shakuhachi) player, who graduated from School of Engineering, Yokohama National Univ., shows spectrum-analysis results of various music sounds: Familiar applications of Fourier analysis.
2. Dr. Euler's Fabulous Formula: Cures Many Mathematical Ills (Paul J. Nahin, Nippon Hyoron Sha) [Japanese translation]
This book describes various stories related to Euler's formula in complex number theory. Dealing with issues of electrical and communication engineering, it also gives interesting viewpoints to engineers.
- Messages for Students
- As mentioned in "Favorite books", basic mathematical theories are indispensable in analyzing familiar phenomena and building practical devices.
- Publications other than one's areas of specialization
- Relay Eassay 52
http://www.u-aizu.ac.jp/en/public/relay-essay/
Dissertation and Published Works
[1] T. Tsukahara, "A High-Precision Quadrature Modulator Using a Fully-Differential CMOS Flip-Flop Phase-Shifter Suitable for the Next-Generation RF Transceivers," 2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT2020), WE3B-2, pp. 41-43, Sept. 2-4, 2020, Hiroshima, Japan. (Invited)
[2] S. Takara and T. Tsukahara, “Design of a Dual-LO Switching Quadrature Modulator Using a Flip-Flop Phase-Shifter,” IEEJ Transactions on Electronics, Information and Systems, Vol. 139, No. 1, pp. 87-88, Jan. 2019. => Mr. S. Takara received the "Excellent Paper Award" from Tohoku Branch Chair of IEE Japan (Denkigakkai) on April 22, 2020.
[3] T. Tsukahara, R. Ito, and K. Arimura, “Complex Signal Processing Used in Modern RF Transceivers,” 2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT2015), TH4A-1, pp. 100-102, Aug. 26-28, 2015, Sendai, Japan. (Invited)
[4] T. Tsushima and T. Tsukahara, "Design of Low-Voltage High-Precision Complex Quadrature Modulators," The 17th Workshop on Synthesis And System Integration of Mixed Information Technologies" (SASIMI 2012), R4-9, pp. 476-481, March 9, 2012 Beppu, Japan. [Refereed]
[5] T. Tsukahara, T. Tsushima, and H. Ito, "Evolution of Transceiver Architectures toward Software-Defined and Cognitive Radios," 2010 International Conference on Solid State Devices and Materials (SSDM), pp. 99-100, Tokyo, Japan, Sept. 22, 2010. (Invited)
[6] T. Tsukahara, "Design of CMOS RF Circuits," MARUZEN, Nov. 30, 2009, (ISBN: 978-4-621-08203-4). [Book]
[7] T. Tsukahara, "RF CMOS Circuits- Overview and Perspective," 2007 International Conference on Solid State Devices and Materials (SSDM), pp. 752-753, Sept. 2007 (Invited)
[8] J. Kodate, T. Douseki, T. Tsukahara, T. Okabe, and N. Sato," Practical High-Resistivity Silicon-on-Insulator Solution for Spiral Inductors in Radio-Frequency Integrated Circuits," Jpn. J. Apply. Phys., vol. 44, no. 8, pp. 5987-5993, Aug. 2005.
[9] A. Yamagishi, M. Ugajin, and T. Tsukahara, "A 2.4-GHz PLL Synthesizer for a 1-V Bluetooth RF Transceiver," IEICE Trans. Electron., vol. E87-C, no. 6, pp. 895-900, June 2004.
[10] M. Ugajin, J. Kodate, and T. Tsukahara, "A 1-V 2.4-GHz Downconverter for FSK Wireless Applications with a Complex BPF and a Frequency Doubler in CMOS/SOI," IEICE Trans. Electron., vol. E87-C, no. 6, pp. 888-894, June 2004.
[11] M. Ugajin, A. Yamagishi, J. Kodate, M. Harada, and T. Tsukahara, "A 1-V CMOS SOI Bluetooth RF Transceiver Using LC-Tuned and Transistor-Current-Source Folded Circuits," IEEE J. Solid-State Circuits, vol. 39, no. 4, pp. 569-576, April 2004.
[12] A. Yamagishi, T. Tsukahara, and M. Muraguchi, "An 85-Mbit/s DQPSK MODEM-LSI using a ROM Storage Capacity Reducing Technique Based on Phase Plane Symmetry," IEICE Trans. Electronics, vol. J86-C，no. 8, pp.845-852, Aug. 2003.
[13] T. Tsukahara, J. Kodate, M. Harada, M. Ugajin, and A. Yamagishi, "RF-CMOS Circuits Technologies and Future Trends," IEICE Trans. Electronics, vol. J86-C，no. 7, pp. 674-686, July 2003. (Invited paper)