Workshops

TU1-F1 Design and Development of Robust Antenna Arrays for LEO (low earth orbit) Satellite Applications

Room

F201

Date and Time

11/29 (Tue) 10:00-16:50

Chair

C.-K. Clive Tzuang (National Taiwan Univ., Taiwan)

Organizers

C.-K. Clive Tzuang (National Taiwan Univ., Taiwan)
Kelvin Chiu (BWant Corp., Taiwan)

Abstract

The workshop presents innovative approaches to the design and development of conformed, cost-effective satellite array transceiver system for tracking fast moving LEO (low earth orbit) satellites of high data throughputs, and provides a forum for exchange of ideas benefiting the millimeter-wave and microwave satellite technology development to timely deliver mobile products. (background)
 
The increasing demands for LEO satellite earth apparatus such as hubs and mobile terminals (e.g., vehicles) had caught significant attention from most government agencies around the world, specifically, in the Asia/Pacific rim in quest of making reliable products at affordable price. This workshop teams up several entities contributing to the various aspects of technology development of satellite antenna array transceivers, enabling fast convergence of expertise of the contributing parties from both industrial and academic research institutes. (contents)
 
The workshop speakers and their co-workers will cover several subjects of interest include:
1. The overview of LEO satellites from the perspective of semiconductor industry, business model, RF communication signal processing, thin-film and hybrid assemblies, reliability, practicality, and hands-on RF integration of large arrays,
2. Polymer or composite fiber-filled materials which may game change the present landscape of microwave/millimeter-wave substrates for integrating large RF array systems in view of improved thermal properties and low propagation loss characteristics to amble comfortably through judicious choices of dielectric constants and thickness.
3. Robust RF probing of chip antenna and/or RF system board plays a key role in all phases of the research and development of large array antenna systems, including verifications and debugging.
4. Report of approaches enabling streamline RF interface to digital baseband and control console.

Sponsorship

Endorsed by Chinese Microwave Association of Taiwan, and Department of Electronics Engineering, Chang Gung University, Taiwan

Time Table

TU1-F2 Latest Activities and Technology Prospects on Beyond 5G/6G R&D Projects in Japan

Room

F202

Date and Time

11/29 (Tue) 09:30-12:20

Chair

Toshihiko Nishimura (Hokkaido Univ., Japan)

Organizers

Satoshi Suyama (NTT DOCOMO, INC., Japan)
Toshihiko Nishimura (Hokkaido Univ., Japan)
Kazushi Muraoka (NEC Corp., Japan)

Abstract

R&D activities to realize next generation mobile communication systems, namely, 6G, have been accelerated globally. Beyond 5G Promotion Consortium was established in Japan for strategic collaboration among industry, academia, and government. 2025 will be considered a milestone in technology development for Beyond 5G/6G. Toward this milestone, national R&D projects in Japan started from the fiscal year 2021: Research and development for expansion of radio wave resources by the Ministry of Internal Affairs and Communications (MIC) and research and development promotion project for beyond 5G by the National Institute of Information and Communications Technology (NICT). In this workshop, speakers from industries and academia leading these projects will introduce their recent activities toward 6G.

Time Table

TU1-F3 R&D Efforts toward Practical Application of HAPS

Room

F203

Date and Time

11/29 (Tue) 09:30-11:30

Chair

Yoshihisa Kishiyama (Space Compass Corp., Japan)

Organizer

Yoshihisa Kishiyama (Space Compass Corp., Japan)

Abstract

In recent years, the expectation of the extreme coverage extension by the non-terrestrial network (NTN) heightens for 5G evolution and 6G. This workshop will focus on NTN, especially High Altitude Platform Station (HAPS) and discuss activities for R&D and realization in the industrial world toward 2025 and beyond. Specifically, presentations will be given by companies involved in HAPS R&D projects using the 39 GHz band in Japan, including use cases for practical application, ground station and payload mounting technologies, collaboration with ground 5G networks, propagation measurement experiments, and development of HAPS airframes.

Time Table

TU2-F2 Sub-THz Device for 6G Mobile Communication System

Room

F202

Date and Time

11/29 (Tue) 13:30-15:30

Chair

Yasunori Suzuki (NTT DOCOMO, INC., Japan)

Organizer

Yasunori Suzuki (NTT DOCOMO, INC., Japan)

Abstract

This workshop will present the research and investigation activities for 6G mobile communication system when operating more than 100 GHz in Japan. The workshop has three parts: mobile communication system, active phased array antenna, and high power transistor.

First: the presentation will show the requirement and technical issues for realizing transmitter and system when operating more than 100 GHz. The research results will be provided the compensation technologies for equalizing frequency characteristics of transmitter, and linearizing intermodulation distortion components by generating the power amplifier. Furthermore, the presentation will show the fundamental experimental results for confirming the transmission quality.

Second: beamforming is the key technology for enabling efficient mm-wave/sub-THz wireless communication by compensating for large propagation loss and high straightness. One of the main challenges to realize phased array in such a high frequency is to integrate RF ICs and antennas in a small area comparable to the wave length. This presentation will show some prototypes of 5G mmW phased array module and further technology challenge for sub-THz phased array in 6G.

Third: the sub-THz wave band, particularly in the 300-GHz is attractive for next 6G wireless communication because wide-range frequency is available. However, when using the sub-THz wave band, the output power of power amplifiers is insufficient to achieve enough communication distance. To realize 6G mobile communication system, the improvement in power characteristics for sub-THz amplifiers is required. In this presentation, we demonstrate the current status of high-power InP-based high-electron-mobility transistors for sub-THz power amplifiers.

Time Table

TU2-F3 Recent Advances on Intelligent Reflecting Surface

Room

F203

Date and Time

11/29 (Tue) 13:30-16:20

Chair

Keisuke Konno (Tohoku Univ., Japan)
Hiromi Matsuno (KDDI Research Inc., Japan)

Organizers

Keisuke Konno (Tohoku Univ., Japan)
Hiromi Matsuno (KDDI Research Inc., Japan)

Abstract

This workshop focuses on recent advances on an intelligent reflecting surface (IRS) and its related technologies. The IRS enables to reflect incident electromagnetic wave towards specific direction. The IRS has such beam scanning ability, and is expected to contribute to the next generation wireless communication systems or microwave systems.

This workshop deals with recent development of irs related technologies as follows:
* Design method of high performance IRS
* Electronically/mechanically reconfigurable IRS
* Simulation/fabrication/measurement technologies for IRS
* Application of IRS

Time Table

TU2-F4 Frontiers of Terahertz Technology

Room

F204

Date and Time

11/29 (Tue) 13:30-16:30

Chairs

Minoru Fujishima (Hiroshima Univ., Japan)
Shuhei Amakawa (Hiroshima Univ., Japan)

Organizers

Minoru Fujishima (Hiroshima Univ., Japan)
Shuhei Amakawa (Hiroshima Univ., Japan)

Abstract

Large-scale projects are running in a number of countries that aim at exploring terahertz technology. The terahertz band is finally being considered for wireless communications and other applications. In this workshop, leading experts will present the state-of-the-art of terahertz technology, covering a wide range of topics from compound semiconductor and silicon CMOS circuits, waveguide transitions and antenna integration, and applications and future prospects.

Time Table