Workshop Program

Due to the recent shortage of frequency resources, the spectrum sharing between wireless communication and sensing has been considered, and this technology is called ISAC (Integrated sensing and communication). However, although they use the same radio waves, the signal and hardware requirements are very different, and various issues must be overcome to realize this technology.
In this session, researchers involved in ISAC will be invited to discuss the latest works and challenges.

Keyword ： Wireless Communication, Sensing, Spectrum Sharing

Nearly five years have passed since the commercial launch of 5G, and its public network coverage has expanded, with the proliferation of devices also progressing. On the other hand, the spread of private 5G/local 5G, intended for use in specific buildings, premises, companies, factories, and municipalities in limited areas, is gradually increasing but at a much slower pace than initially anticipated. Additionally, the millimeter wave band, which was expected to realize high-speed, large-capacity, and low-latency 5G, has not seen widespread adoption. However, both private 5G/local 5G and millimeter waves can potentially be utilized to improve operational efficiency and create new services and use cases across various industries by leveraging their high performance.
The XG Mobile Promotion Forum (XGMF) has established the ODAIBA IX (Industrial Transformation) Core project to promote the spread of private 5G/local 5G and millimeter waves, and is actively working with many interested members. Particularly, the use of private 5G/local 5G and millimeter waves in the manufacturing industry is considered one of the most effective use cases. Currently, XGMF is collaborating with Flexible Factory Partner Alliance (FFPA) and 5G Automation 5G Alliance for Connected Industries and Automation (5G-ACIA), which promote wireless technology and 5G adoption in the manufacturing industry.
In this workshop, representatives from the three organizations, ODAIBA IX Core, FFPA and 5G-ACIA, will give presentations on their activities, and through a panel discussion, they will discuss future prospects for further promotion of private 5G/local 5G and millimeter waves.

Keyword ： Private 5G, Local 5G, Non-Public 5G, Millimeter Wave

In recent years, there has been increasing interest in wireless power transfer (WPT) due to the expansion of DX and IoT businesses. Research focusing on integrating communication and WPT for Beyond 5G(B5G)/6G has been incorporated into a key technology aiming to achieve scalability in 5G communication, which NICT scandalized.
In this session, we will introduce the research project "High-Frequency Wireless Power Transmission and Communication Integration Technology for Achieving a Full-Wireless Society" adopted in the B5G/6G project.

Keyword ： Wireless Power Transmission, Millimeter Wave Antennas, Millimeter Wave Rectennas, Beyond 5G/6G

Realizing energy sources without carbon dioxide is required for a sustainable society.
This workshop focuses on the potential for energy innovation through high-power microwave technology. First, the latest research results on expanding the gyrotrons used in fusion power generation, a well-known future energy source, to new application fields in the millimeter wave and terahertz bands will be presented. Next, aerial power supply technology for flying objects will be introduced as one of the applications of high-frequency gyrotrons. By radiating microwave beams from the ground to the sky, continuously flying drones and low-transportation-cost rockets are expected to be realized. And the reduced cost of transportation to space will bring us closer to realizing another future energy source: space solar power station. Finally, a high-power phased array using magnetrons will be presented as the latest technology related to the space solar power station.

Keyword ： High-power Microwaves Source, Magnetron, Gyrotron, Aerial Vehicle, Wireless Power Transfer, Space Solar Power Station

Optical devices have been investigated as a fundamental technology for information communication. In the field of radio wave technology, terahertz wave devices have been intensively investigated for broadband communication and sensing applications. To realize these devices, high manufacturing accuracy is required. Therefore, an electromagnetic field analysis technology that can accurately handle the behavior of electromagnetic fields is necessary.
This basic course focuses on the fundamentals of the FDTD method and discusses the practice of the analyzing these devices.

Keyword ： FDTD Method, Terahertz Wave Device, Optical Wave Device, Electromagnetic Theory

Radar measurement has a long history and is one of the most technologically established fields. Recently, the use of frequency bands such as millimeter-wave and terahertz-wave bands in addition to microwave has accelerated the pace of development beyond conventional radar measurement, including applications in nondestructive testing, medical and healthcare monitoring, and sensor fusion technologies. For these reasons, radar systems have been installed in various systems such as automobiles and smartphones.
This workshop will introduce the latest trends in radar-based sensing technology and its applications.

Keyword ： Wireless Sensing, Healthcare, Human Sensing, Subsurface Sensing, Nondestructive Testing, Radar Signal Processing

This basic course will cover the basics of compound semiconductors (GaAs, GaN, etc.) used in power amplifiers that amplify wireless signals, and amplifier design methods. In particular, design technologies for broadband, low distortion, compact size, and high frequencies (millimeter waves) will be introduced.
In addition, recent research such as digital pre-distortion technology for 5G base stations to compensate for the nonlinear characteristics of amplifiers and efforts to implement power amplifiers in multi-beam phased array antenna equipment for 6G will be introduced.

Keyword ： Compound Semiconductors, GaAs, GaN, Power Amplifiers, Digital Distortion Compensation, Phased Array Antennas, Electromagnetic Field Analysis, Thermal Fluid Analysis

Research and development of mobile communication systems and related devices is accelerating worldwide toward 6G. It is expected to provide extremely higher transmission speeds, and the possibility of using the sub-THz band is being investigated. In the 6G era, it is also expected that existing frequency bands for mobile communication systems, including 5G, continues to be used. According to this background, this session introduces research and development activities of power amplifiers toward 6G.

Keyword ： 6G, Power Amplifier, Sub 6GHz Band, Sub-Terahertz Band

A quarter of a century has passed since the concept of electromagnetic metamaterials first appeared. During this time, along with the discovery of novel electromagnetic phenomena and the creation of new functional devices, there have been many recent proposals for practical antennas and reflective/transmissive surfaces.
In this workshop, the latest research and development trends in electromagnetic metamaterials in the microwave and millimeter-wave regions will be presented, especially in the areas of metasurfaces, cloaking, non-reciprocal, dispersive phase shifters, transmitarrays, and beam squint control.

Keyword ： Metamaterials, Metasurfaces, Cloaking, Non-Reciprocal, Transmitarray

Microwave filters are essential components in modern wireless communication systems.
This foundational course is an introductory lecture aimed at beginner students and working professionals. The lecturer is a veteran filter research educator with extensive experience in researching microwave filter design theories, as well as in training students and young engineers. The course provides a clear explanation of the basic formulas and equivalent circuits needed to design microwave filters from the ground up, using easy-to-understand design examples to illustrate the practical design process of microwave filters. In addition, the design of bandpass filters using dielectric multi-mode resonators are provided, which can find possible applications for mobile communication base stations.
Through this course, participants will learn the basics of microwave filters and acquire practical design skills.

Keyword ： Microwave Filters, Basic Design Equations, Equivalent Circuits, Applications

AI technologies, including machine learning, have developed rapidly on the back of increasing computational power and data for learning. In particular, significant results have been achieved in the fields of image processing and natural language processing, and the introduction of AI technology is being considered in various fields to capitalize on this trend.
This session will present research on incorporating AI techniques into the field of antenna propagation, including improving the accuracy of propagation estimation techniques and the efficiency of array antenna calibration.

Keyword ： Machine Learning, Neural Network (NN)，Radio Propagation, Array Antenna

In the context of 6G, non-terrestrial networks (NTN) are expected to become increasingly important for expanding communication areas. Non-terrestrial networks are anticipated to provide communication not only through satellite communication and high altitude platform systems (HAPS) but also through underwater communication networks that offer connectivity in offshore, underwater, and marine environments.
In this workshop, we will focus on wireless communication and wireless power transfer technologies using electromagnetic fields in marine, underwater, and aquatic environments. We will introduce the latest technologies and case studies, including the behavior of electromagnetic fields underwater, transmission experiments using marine antennas, and communication modules.

Keyword ： Ocean, Water, Seawater, Internet of Things, Non-Terrestrial Networks

This session will provide a plain and comprehensive view of microwave technology, which is an essential technology for superconducting quantum computers, including microwave operations such as controlling and reading out qubits, and the high-frequency circuit technology used for these operations.
We hope that this session will deepen your understanding of the importance of microwave technology in quantum computers and encourage many people to become involved in the development of quantum computers in the future.

Keyword ： Quantum Computer, Millikelvin Temperatures, Microwave Pulses, Quantum Control

→ Representative slides can be seen here (PDF)

In electromagnetic field simulation, the Method of Moments (MoM), Finite Element Method (FEM), and Finite-Difference Time-Domain (FDTD) method are well-known for their distinctive approaches.
This session will provide an overview of these methods, including their advantages and disadvantages. Through practical demonstrations using commercial simulators and benchmark problems, you will gain hands-on experience with the simulation workflow of each method.

Keyword ： Electromagnetic Simulation, Method of Moments, Finite Element Method, FDTD Method

→ Representative slides can be seen here (PDF)