資料8-C
2012/10/29

URSI Commission C in Japan
22th URSI-C-Japan Chairperson Masahiro MORIKURA
1. Domestic Activities
1.1 The 1st scientific workshop presented by the 22th URSI-C in Japana). Convener: Prof. Minoru Okada, Nara Institute of Science and Technologyb) Date/time: Nov. 4, 2011 / 13:00 - 17:00
c) Venue: Research Institute of Electrical Communication, Tohoku University RIEC Building #2 (W-Wing) 4F Conference
Roomd) Registration fee: Freee) Listed attendees: 25 personsf) Local arrangement: Dr. Shoichi Narahashi (NTT DOCOMO)g) Session title: "Radio science to tackle natural disasters"h) Presentation: 40 min for presentation，10 min for Questions and Comments
13:00 - 13:10 Opening Talk
13:10 - 14:00 "Damage of the telecommunication facilities in Tohoku earthquake", Mr. Masaki Fukui (NTT)
14:00 - 14:50 "Experiences in Tohoku earthquake and dependable wireless technology based on joint terrestrial and satellite
networks" Prof. Kenji Suematsu (Tohoku Univ.)
15:20 - 16:10 "Construction of relief network in disaster area using ad-hoc network technology" Prof. Kenichi Mase (NiigataUniv.)
16:10 - 17:00 "Introduction of domestic mobile satellite communication system, WIDESTAR II, and role of satellite
communication in disasters" Mr. Kazuichi Yamamoto (NTT DOCOMO)
i) Reception and Lamp Session at Iwafuneya, Sendai, Japanj) Steering committee meeting took place from 8:00 to 9:00 Nov. 5k) Concluding Remarks
We have four interesting talks about roles of radio science and its problems to face natural disasters. We have to conclude theproblems of radio science against disasters when the six months have passed after the Tohoku great earthquake on March11th, 2011. Many issues have been revealed in disaster relief by use of radio science. In Tohoku earthquake, cellular
networks and other radio communication systems, which were believed to be the robust system against disasters, has beendamaged. In this workshop, the engineers and researchers working for relief in the stricken area introduced valuable
materials on the damage of the telecommunication systems due to earthquake and tsunami disasters. They also shows theconstruction and operation activities for the networks to face disaster. We have valuable discussion on disaster-resilient
network technologies.
1.2 The 2nd scientific workshop presented by the 22th URSI-C in Japana) Convener: Dr. Kei Satoh, NTT DOCOMOb) Date/time: 10:00 - 17:20, 24 February, 2012c) Venue: Kanazawa Institute of Technology, Nonoichi, Ishikawa, Japand) Registration fee: Freee) Listed attendees: 54 personsf) Local arrangement: Prof. Kenji Itoh (Kanazawa Institute of Technology)g) Session title: "Pencil-and-paper exercise on analog circuits"h) Presentation: 90 min including Q & A for tutorial speaker, 50 min including Q & A for each general speaker110:00 - 11:30 Tutorial Talk, "Fundamentals of Wireless Local Area Network", Prof. Masahiro Morikura URSI-C-Japan,
Chair
13:30 - 13:40 Opening Talk, Prof. Masahiro Morikura URSI-C-Japan, Chair
13:40 - 14:30 "Microwave Guided Theory and Its Applications to Design of Matching Circuits", Prof. Futoshi Kuroki (KureNational College of Technology)
14:30 - 15:20 "Importance of Linear Circuit Theory for Recent Nonlinear High-Efficiency Microwave Power Amplifier
Design", Prof. Kazuhiko Honjo (The University of Electro-Communications)
15:40 - 16:30 "Seven Different Aspects on What Role Q Factor Plays in Resonators and Oscillators" Prof. Takashi Ohira(Toyohashi University of Technology)
16:30 - 17:20 "Analysis of Diode Circuits" Prof. Kenji Itoh (Kanazawa Institute of Technology)i) Reception at Kanazawa, Ishikawa, Japan.
j) Steering committee meeting took place from 12:00 to 13:00 on 24 February, 2012.
k) Concluding Remarks
In this workshop, we had one tutorial talk about wireless local area network and four general talks about "pencil-and-paper
exercise on analog circuits". These four talks include a microwave guided theory and its applications to design of matchingcircuits, recent nonlinear high-efficiency microwave power amplifier design, roles of Q factor in resonators and oscillators,
and an analysis of diode circuits.
We had a fruitful discussion about the importance of "pencil-and-paper exercise".
1.3 The 3rd scientific workshop presented by the 22th URSI-C in Japana) Convener: Prof. Yasuo Ohno (The University of Tokushima)b) Date/time: 13:00 - 17:20, June 1, 2012c) Venue: Kagoshima University, Korimoto Campus (Kagoshima, Japan)d) Registration fee: Freee) Listed attendees: About 50 personsf) Local arrangement: Prof. Kenjiro Nishikawa (Kagoshima University)g) Session title: "Speed Limit of Electron Devices"h) Presentation:
13:00 - 13:10 Opening Talk, Prof. Masahiro Morikura URSI-C-Japan, Chair
13:10-14:00

Progress and Application of High-speed III-V Semiconductor Devices

Dr. Hideaki Matsuzaki (NTT Photonics Laboratories)
14:00-14:50

Present Status and Future Prospects of High-Speed GaN Electron Devices

Dr. Toshihide Kikkawa(Fujitsu Laboratories)
15:20-16:10

Device Technologies for Terahertz Applications

Prof. Tadao Nagatsuma (Osaka University)
16:10-17:00

LNA Performance for Millimeter-wave Passive Imaging Camera

Prof. Koji Mizuno (Tohoku University)
17:00

Closingi) Reception:

Hotel Welview Kagoshima (Kagoshima, Japan)j) Steering committee meeting:June 2(Sat) 8:00〜8:50 at Hotel Welview Kagoshimak) Remarks
The workshop was held in the volcanic-ashes falling typical in Kagoshima. Dr. Matsuzaki reported the present InGaAschannel devices for 300GHz application and the new technologies for future THz applications. Dr. Kikkawa presented on themillimeter-wave application of GaN devices, which is now being developed for power devices. Prof. Nagatsuma reported the2terahertz signal generation by semiconductor devices using the beat of two laser lights and explained its applications. Prof.
Mizuno presented on 35GHz band millimeter-wave camera and the needs of high performance semiconductor devices.
As the semiconductor technology matures, uncertainty spreads in its future development and applications. However, all thepresentations indicated the possibility of the millimeter and terahertz range applications, which are not yet developed.
1.4 The 4th scientific workshop presented by the 22th URSI-C in Japana) Convener: Prof. Kentaro Nishimori, Niigata Universityb) Date/time: Sept. 21, 2012. 13:00-17:00c) Venue: Asari Classe Hotel, Otaru, Hokkaidod) Registration fee: Freee) Listed attendees: 19 personsf) Local arrangement: Dr. Kentaro Nishimori, Niigata Universityg) Session title: "Apply for array signal processing for non communication"h) Presentation: 30 min for presentation，20 min for Questions and Comments
13:00-13:10 Opening Talk
13:10-14:00 "Apply of multi antennas for radar technology (MIMO radar)," Prof. Hiroyoshi Yamada (Niigata University)
14:00-14:50 "PIM (Passive intermodulation) in reflector antennas for array on satellite communications," Dr. Mitsuaki
Orikasa (NICT)
15:20-16:10 "Reduction of inverter noise using spatial signal processing techniques," Prof. Mitoshi Fujimoto (FukuiUniversity)
16:10～17:00 "Intruder detection by spatial sensor using MIMO channels, " Prof. Kentaro Nishimori (Niigata University)
17:00 Closingi) Reception and Lamp Session at Asari Classe Hotel, Otaru,: Attendees 25 personsj) Steering committee meeting took place from 8:00 to 9:00 Nov. 5k) Concluding Remarks
We have four interesting talks about apply array signal processing for application except communication area. The arraysignal processing has been attracted much attention, because Multiple Input Multiple Output systems which improves thetransmission rate was incorporated in commercial systems. Various applications are introduced using array signal processingin the presentations: application for radar, PIM for phased array, inverter noise canceller. Moreover, fruitful discussion wasemployed and present and future works are discussed. We have valuable discussion on array signal processing techniques.
2. International Activities
None3