The third scientific workshop
presented by the 25th URSI-C in Japan

Session title:
"Devices for over 100GHz band and Radio Systems"


1. Convener: Yasunori Suzuki (NTT DOCOMO, INC.)

2. Date/time: April 27th, 2022 / 13:20 - 16:00

3. Venue: Hakodate city convention center (meeting room #2), Hokkaido pref.
(Hybrid conference with web conference)

4. Registration fee: Free

5. Listed attendees: On site: 19persons,Online: 20persons

6. Local arrangement: Prof. Nakatsugawa (National Institute of Technology, Hakodate College)

7. Session title: "Devices for over 100GHz band and Radio Systems"

8. Presentations:
  • 13:20 - 13:30 Opening Remarks
    Prof. Noriharu Suematsu, Chair, Commission C of URSI-JNC
    (Tohoku University)
  • 13:30 - 14:05 "Future Trend of Beyond 5G/6G mobile communication systems and
    Tera-Hertz Radio Communication Systems"
    Dr. Iwao Hosako (National Institute of Information and Communications
    Technology)
  • 14:05 - 14:40 "Current Status and Future Trend of Optical Technology for millimeter-
    wave and Tera-Hertz Radio Communication Systems"
    Prof. Tadao Nagatsuma (Osaka University)
  • 14:40 - 14:50 Coffee Break (10 min.)
  • 14:50 - 15:25 "Device Technology for 300 GHz Band Radio Communication Systems"
    Dr. Hiroyuki Takahashi (NTT Advanced Technology Corporation)
  • 15:25 - 16:00 "THz Band On-Chip Array Antenna"
    Prof. Haruichi Kanaya (Kyushu University)
  • 16:45Closing

9.Reception:
It held from 18:30 to 20:30 at KKR Hakodate in Hakodate , Hokkaido pref. The number of attendees was 18.

10.The Steering committee meeting:
It took place from 8:30 to 9:30 on April 28th, 2022, at KKR Hakodate.

11. Concluding Remarks
Regarding research of radio communication systems and devices for operating more than 100 GHz band toward the six-generation mobile communication systems (6G), there are many research activities for realizing 6G such as publishing the white papers from research groups and companies. This workshop provided to share the recent research results in Japan, which are radio communication systems and devices above 100 GHz band for 6G.
First, Dr. Iwao Hosako (NICT) presented the current status and future trend of tera-Hertz radio communication systems toward beyond the fifth-generation mobile communication systems (5G) and 6G. The presentation included the standardization status and use-case scenarios for beyond 5G and 6G.
Second, Prof. Tadao Nagatsuma (Osaka University) presented the research results and future perspective of optical technology for generating millimeter wave and tera Hertz wave. The practical use-case scenarios using tera Hertz wave were also introduced.
Third, Dr. Hiroyuki Takahashi (NTT Device Technology Laboratories) presented the research results of radio communication systems and devices for operating 300 GHz band. The filed experiment results confirmed that the 300 GHz band transmitter could send the transmitted signal to the receiver achieving sufficient transmission quality.
Finally, Prof. Haruichi Kanaya (Kyushu University) presented the research results of THz band on-chip array antennas. The presentation provided the design, fabrication, experimental results of THz band on-chip array antennas.
In the research activities toward 6G, this workshop shared the current status and future trend of radio communication systems and devices for operating millimeter wave band and THz band, while that provided deep and comprehensive discussions between attendees and speakers. From these discussions, this workshop was very useful to share the latest results, research trend, standardization trend, and technical issues for realizing 6G.





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