資料9-C

2015.6.10
23rd URSI-C Chair
Nobuyoshi Kikuma

Activity Report of URSI-C Committee- The 4th scientific workshop of the 23rd URSI-C in Japan-1. Session title: "An attempt to discover things by studying the past of wireless powertransfer"
2. Convener: Dr. Takashi Hikage, Hokkaido University
3. Date/time: 12:00 - 16:00, December 4th, 2015
4. Venue: Kyoto University Tokyo Office (Minato-ku, Tokyo)
5. Registration fee: Free
6. Listed attendees: 48 persons
7. Local arrangement: Prof. Naoki Shinohara (Kyoto University)
8. Presentation:•12:00 - 12:05•12:05 - 12:45•12:45 - 13:25•13:25 - 14:05•14:05 - 14:20

Opening Remarks, Prof. Nobuyoshi Kikuma, Chair,Commission C of URSI-JNC (Nagoya Institute ofTechnology)"WPT-Efficiency and Power", Prof. Hidetoshi Matsuki(Tohoku University)"The story from Inductive Power Transfer to Induct Power
Supply", Prof. Shunsuke Takahashi (Waseda University)"History of my antenna research", Prof. Kiyohiko Itoh
(Professor Emeritus Hokkaido University)
Coffee Break資料9-C•14:20 - 15:00•15:00 - 16:00"An old tale of demonstration experiments using microwave
power transmission", Prof. Yoshiyuki Fujino (ToyoUniversity)
Keynote "URSI, Radio Science and Solar Power Satellite",Prof. Hiroshi Matsumoto (President of RIKEN, ProfessorEmeritus Kyoto University)

9. Reception: Shinagawa Intercity, Minato-ku, Tokyo
10. The steering committee meeting took place from 11:00 to 111:30 on December 4th,2015.
11. Concluding Remarks
This is the fourth workshop organized by the 23rd URSI-C in Japan. This workshop
focused on the past researches of wireless power transfer technology. Four renownedleading professors gave their interesting presentations in terms of precious topics ofpast researches and developments of the wireless power transfer and their applications
as well as the current industrial trends and prospects based on the past researches. Inaddition, Prof. Matsumoto (President of RIKEN, Professor Emeritus Kyoto Univ.) gavea keynote presentation regarding history of URSI, Radio Science researches in Kyoto
University and Solar Power Satellite.
The topics presented here were impressive in URSI community, and gave us many
inspirations and new insights. We also had valuable discussion on the cutting-edge
technology and future trends of the wireless power transfer.

資料9-C

2015.6.10
23rd URSI-C Chair
Nobuyoshi Kikuma

Activity Report of URSI-C Committee- The 5th scientific workshop of the 23rd URSI-C in Japan-

1. Session title: "Design Techniques for Low-Power and High-Performance WirelessSystems"
2. Convener: Dr. Ryuichi Fujimoto, Toshiba Corp.
3. Date/time: 14:00 - 17:00, March 14th, 2016
4. Venue: Karatsu Citizens Plaza (Karatsu city, Saga pref.)5. Registration fee: Free
6. Listed attendees: 18 persons
7. Local arrangement: Dr. Ryuichi Fujimoto, Toshiba Corp.
8. Presentation:•14:00 - 14:10•14:10 - 14:55•14:55 - 15:40•15:40 - 16:00

Opening Remarks, Prof. Nobuyoshi Kikuma, Chair,Commission C of URSI-JNC (Nagoya Institute ofTechnology)"Improvement of LC-resonator in high-frequency region andperformance of VCO using improved LC-resonator", Prof.
Nobuyui Ito (Okayama Prefectural University)"Low-power analog RF circuits and flexible devices forwireless BMI", Prof. Ippei Akita (Toyohashi University ofTechnology)
Coffee Break資料9-C•16:00 - 16:45"An Ultra-Low-Power Wireless Transceiver SoC for MedicalApplication", Dr. Shoichi Masui (Fujitsu Lab.)

9. Reception: Attendees 16 persons at Karatsu Royal Hotel, Higashi-Karatsu, Sagapref.
10. The steering committee meeting took place from 20:45 to 21:15 on March 14th,
2016.
11. Night session: "Low power design techniques for Bluetooth SMART SoCs", by Dr.
Ryuichi Fujimoto (Toshiba Corp.) took place from 21:15 to 22:00 on March 14th,2016.
12. Concluding Remarks
This is the 5th workshop organized by the 23rd URSI-C in Japan. Recently, The IoTor IoE has attracted considerable attention, and low-power wireless systems areresearched for the IoT and IoE. This workshop focused on the design techniques for lowpower and high-performance wireless systems.
The first presentation concerned performance improvements of LC-resonators for
VCOs by Prof. Ito. Design optimization of variable capacitors and striped inductors wereintroduced. The second presentation concerned BMI and low-power wireless systems for
BMI by Prof. Akita. Flexible devices for BMI application were also introduced. The final
presentation concerned ultra low-power transceiver for medical applications by Dr. Masui.
A wireless SoC was fabricated using 40-nm CMOS technology, and its power
consumptions of the receiving and transmitting modes were 3.5mW and 3.0mW,respectively.
In the night session, low-power design techniques for Bluetooth SMART SoCs werepresented by Dr. Fujimoto. Many frank discussions were deepened including future
prospects of Japanese semiconductor industry and research.
The topics presented here were impressive in URSI community, and gave us many
inspirations and new insights.