Workshop Program

Discussions on the realization of integrated sensing and communications (ISAC) in 6th generation mobile communications are gaining momentum. Direction estimation algorithms using array antennas will be the primary technology needed to sense target direction.
Aimed at young engineers and students, this lecture will explain the sensing (radar) and basics of array antennas, basics of direction estimation algorithms, and extensions of direction estimation to MIMO radar, using mathematical equations and simulation results.

Keyword ： Array Antenna, Direction Estimation Algorithm, Space-Time Adaptive Processing, Sensing (Radar)

Until now, research and development of quantum computers has focused on the observation of physical phenomena, such as manipulation of qubits and detection of their states, and has been primarily a laboratory-level effort based on the knowledge and experience of researchers. In recent years, there has been an accelerating trend toward using quantum computers as tools rather than as objects of research and development, and it has become essential to realize large-scale quantum computers with more than 1,000 qubits as "industrial products. However, in order to realize such a large-scale quantum computer, the development of quantum computer systems as an extension of the conventional laboratory level has limitations in various aspects such as performance, cost, power consumption, and quality assurance. Recently, in the industrialization of quantum computers, material procurement, which depends on a very limited number of suppliers, has become a global issue from the viewpoint of economic security. Therefore, it is necessary to backcast the development of new materials essential for large-scale quantum computers from the system level design, incorporate existing product development frameworks (design, simulation, manufacturing, and evaluation cycles) and quality assurance mechanisms, and establish a supply chain The supply chain itself needs to be built. We propose an initiative to industrialize the very supply chain that supports the computers. We believe that a full understanding of this scheme will help you understand that the development of field-specific material products for quantum computers is not a unique activity.
In this session, we will introduce the future development of quantum computers and the recent international situation, together with microwave system design and simulation techniques.

Keyword ： Large-Scale Quantum Computer，Supply Chain, Microwave System Design Technology

To realize a smart factory based on Industry IoT, it is essential to wirelessly transmit information and power, and efficiently utilize wireless resources by integratively and dynamically allocating multidimensional wireless resources such as time, frequency, space, and power according to their applications.
In this workshop, we will introduce the latest research trends in 6G technologies for smart factories, aiming to efficiently utilize wireless resources and share wireless resources for information and power transmission in harsh indoor communication environments. Specifically, this workshop will cover wireless environment sensing technology, multidimensional resource allocation technology that adapts to environmental changes, and virtual protection area control technology for high-power wireless power transmission.

Keyword ： Industrial IoT，Resource Allocation，Indoor Positioning, Radio Environment Recognition，Microwave Power Transfer，Beamforming

We need to continue developing of electrification of industries using microwave technology as an important option for taking measures for the carbon neutral issues. Members from academia and industries from the R024 committee on Electromagnetic-Wave-Excited Reaction Field (JSPS) cooperate together through the research works and implementation practices in their each institution aiming at the realization of the carbon neutral society.
We hope to be able to recognize where we are standing on the way to realize the future zero carbon society before 2050 by sharing the information on the technology and manufactured products supplied by the industry members of the R024 committee at the present stage.

Keyword ： Microwave Chemistry, Chemical Process, Electrification of Industries, Substance Manufacturing, Material Processing, Microwave Oscillator, Microwave Heating, Dielectric Heating

Experts working at the forefront of each industry will give presentations on use cases and technologies for multiphysics/digital twins based on simulation technology.
They will introduce examples of use cases for digital transformation (DX), cyber-physical systems (CPS), and digital twins to realize a convenient and prosperous society, as well as model-based development (MBD), MBSE, and CAE to realize efficient product development.

Keyword ： Multiphysics, Digital Twin, Digital Transformation (DX), Cyber Physical System (CPS), Model-Based Development (MBD), MBSE, CAE

Electromagnetic simulation technologies are indispensable for studies on antennas and propagation. According to advancement of the electromagnetic simulation technologies, design of microwave components using commercial simulator software is common but a lot of problems that are difficult to be solved by the commercial simulator software are still remaining.
In this workshop, we focus on the numerical simulation technologies such as method of moments (MoM) or finite difference time domain (FDTD) method and introduce state-of-the-art technologies for specific problems that are difficult (or impossible) to be solved by the commercial simulator software. Main topics of this workshop is a periodic structure, wideband electromagnetic response of human body, and wireless power transfer at low frequency band.

Keyword ： Antenna, Propagation, Numerical Simulation, Method of Moments, FDTD Method

The rapid increase in data traffic in 5G/Beyond 5G/6G requires highly efficient and linear power amplifiers. However, it is very difficult to simultaneously improve the efficiency and linearity of power amplifiers, especially for wide operating bandwidths and modulation bandwidths.
This workshop will focus on the state-of-the-art technology for improving the efficiency of power amplifiers by load modulation.

Keyword ： 5G、B5G (Beyond 5G)、6G、Power Amplifier、 Next-Generation Communication、Semiconductor、Compound、High Efficiency、Load Modulation、Doherty、Load Modulated Balanced Power Amplifier

Research and development of wireless communication using the terahertz band is evolving from conventional elemental technologies to the construction of systems and applications that combine them.
In this session, we will introduce the overall research toward realizing ultra-large capacity wireless LAN in the 6G era, and then explain radio wave propagation assuming MIMO transmission, CMOS devices for implementation in small terminals, and the system concept and configuration of the wireless network.

Keyword ： 6th Generation Mobile Communication System (6G), Terahertz, Radio Wave Propagation, Integrated Circuit, CMOS, MAC, Wireless LAN

Currently, commercially deployed wireless communication services use millimeter wave bands such as the 28GHz band. The millimeter wave band has the advantage of being easy to secure bandwidth and suitable for high-speed, large-capacity communications. On the other hand, there are many issues that need to be resolved, such as the increase in blind zones due to increased propagation loss and the increase in base station operating costs associated with the use of large array antennas. Various studies have been conducted using meta-surface technology: extend area coverage by RIS (Reconfigurable Intelligent Surface) / IRS (Intelligent Reflecting Surface), reflector / transmit array antenna with efficient beam formation.
This session will present research and development on meta-surface technology for wireless communication applications in the high frequency band.

Keyword ： B5G / 6G, Wireless LAN, Metasurface Technology, Reflect / Transmit Array Antenna, Millimeter Wave, RIS (Reconfigurable Intelligent Surface) / IRS (Intelligent Reflecting Surface)

Recently, advanced microwave/millimeter-wave and lightwave fusion technologies are attracting a lot of interest. In Beyond-5G/6G mobile communication systems, seamless conversion and connection between wireless and optical communications is to be a key technology for implementing next-generation eMBB, URLLC, and mMTC. Advanced microwave/millimeter application systems utilizing radio-over-fiber (RoF) technologies (antenna measurement, nondestructive inspection for infrastructures and underground items, and so on) are also reported with improved performances. In addition, excellent high-speed optical modulators using LNOI are newly developed, which are promising as a key device for converting millimeter-wave/THz-wave signals to lightwave signals.
In this workshop, state-of-the-art microwave/millimeter-wave and lightwave fusion technologies and their applications are presented.

Keyword ： Microwave / Millimeter-Wave and Lightwave Fusion, Radio-Over-Fiber, Optical Modulation, Antenna Measurement, Electro-Optic Sensor, LNOI

Systems that use radio waves have come to be used in a wide range of fields, including various types of communication, sensing, and power transmission. Antennas are an essential technology for using radio waves, and it is also essential to measure their characteristics for design validation or certification.
This course will explain the basics of measuring antenna characteristics such as impedance characteristics and radiation patterns, as well as the fundamentals of near-field antenna measurement, which are important for radiation pattern measurements in the millimeter wave and THz wave bands.

Keyword ： Antenna, Measurement, Impedance, Radiation Pattern, Near-Field Measurement

Recently, the use cases required for wireless systems have expanded to various environments and services. It is important to simulate the complex and change communication quality in real-time in cyberspace and maintain stable communication quality through network control in the physical space.
In this session, a presentation will be given on research to achieve high-precision and high-speed estimation of radio propagation characteristics even in complex environments.

Keyword ： Radio Propagation, Millimeter Wave, Measurement Method, Simulator, Quantum Annealing

Recently, wireless communication is widely used. Antenna is one of the important components in wireless communication. However, it seems that beginners feel antenna development is difficult.
In this WE7B session, basic type of antennas and its characteristics are introduced. In addition, antenna design, measurement methods and propagation are explained.

Keyword ： Antenna, Propagation, Radiation Pattern, Directivity, Gain

→ Representative slides can be seen here (PDF)

S-parameters are widely used in the design and measurement of microwave circuits. Impedance matching is important in the design of microwave circuits. In this session, basic knowledge of S-parameters is explained for beginners.
In addition, examples of impedance matching circuits using the Smith chart are shown.

Keyword ： S-Parameter, dB, Insertion Loss, Return Loss, VSWR, Smith Chart, Impedance Matching

→ Representative slides can be seen here (PDF)