Workshop Program

As the deteriorations of civil engineering structures constructed during the period of high economic growth become apparent, the investigations on improving the efficient maintenance system for infrastructures are progressing in Japan. Especially innovative progress of wireless communication technologies is helping to construct a new maintenance method for the civil engineering fields.
The purposes of this session is to discuss the future directions of the technological innovations with experts of multiple fields based on the present case studies of application of wireless communication technologies in civil engineering fields. In particular, the discussion should be progressed under distinguishing the two items, which is to be surely confirmed by people and to be extremely treated for efficient, and it is very happy for us that this session will contribute to future development of multiple industries.

Keyword ： Infrastructures, Monitoring, Maintenance, Urban and Rural Area, Wireless Communication Technology

Recent progress of both high-frequency semiconductor / implementation technologies and information / recognition processing technologies including active beam control and super-resolution recognition has been driving wide proliferation of commercial use of millimeter-wave frequency bands, e.g. automotive radar and high-data-rate wireless communication. The radar is recently required to surveilant the periphery and to estimate self location, as well as to detect front target including pedestrians. As for 5G system, several use cases of millimeter-wave bands are now under discussion.
In this session, latest recognition processing, phased array radar, and semiconductor technologies, which are key ones to achieve the next-generation radar/wireless communication systems, will be explained by professional researchers.

Keyword ： Millimeter Wave, Microwave, Radar, Beamforming, Phased Array, SLAM, Autonomous Driving

The core parts of international standard specifications has been completed for the start of service by the initial system of 5G system, and development of network equipment / user device and creation of appreciations / services are becoming very active in Japan and the world, on the other hand, new studies for beyond 5G are also beginning to be aimed at the continuous evolution of the mobile communication system that has repeatedly evolved over a period of approximately 10 years. It is supposed that the beyond 5G (B5G) system need to respond to the traffic demands that are expected to continue to increase with the advancement and expansion of future mobile communication services, and to meet the demand for e.g., higher throughput / reliability / efficiency of radio access that delivers various types of user information.
In this session, representatives of major mobile vendors that are considering towards B5G system will introduce the direction of B5G system and related latest activities.

Keyword ： Beyond 5G / B5G, High Capacity, High Data Throughput / Reliability / Efficiency Radio Access

Regarding IoT and enhancement of the productivity in manufacturing, it is expected that wireless connectivity is adapted to various kinds of applications in the manufacturing field. Wireless systems like WLAN which work in unlicensed bands are important options for it, however, a lot of issues need to be resolved to satisfy stability and scalability criteria required by applications in the manufacturing field where the wireless environment is more challenging.
In this workshop session, issues in wireless systems for manufacturing and related technologies for resolving the issues will be introduced.

Keyword ： IoT, Manufacturing Field, WLAN, MM-Wave Communication, Monitoring Receiver

In recent years, there are reports on many research and development aimed at application of wireless power transmission.
In this session, we report WPT research toward commercialization in various frequency bands and efforts toward commercialization.

Keyword ： Electrical Wireless Power Transmission, Microwave Power Transmission, WPT for AUV, Factory, Robot, Sensor

In order to realize the high communication capacity, development of the future mobile communication systems is proceeding. In these systems, application of massive MIMO technology and high frequencies above the quasi-millimeter-wave frequency band is being studied.
In this session, on the latest antenna technology that can be a key technology for these systems realization, we will show a wide range contents including the technologies of base station antennas and terminal station antennas.

Keyword ： Antennas and Propagation, Wireless Communication Systems, Mobile Communication, Electromagnetic Field Analysis

The use of frequencies above the quasi-millimeter wave band is also being considered for fifth generation mobile communication and satellite onboard equipment due to demands for faster communication. Various substrate materials and design manufacturing methods have been researched and developed in order to reduce the size and cost of the wireless device.
In this workshop, a trend of the evaluation techniques for the microwave and millimeter-wave characteristics of various materials, such as plastic resin, ceramic, single crystal substrates, printable film / sheets, and so on, using the resonator method will be introduced. Next, low-loss waveguides and circuits in the millimeter wave band by quartz glass will be introduced. We will also show the method of 3D printer suitable for waveguide component manufacturing, and describe development contents of 90 degree coupler. Finally, a compact and low phase noise RF-CMOS VCO using a novel DGS (Defected Ground Structure) resonator will be introduced.

Keyword ： Dielectric substrate materials, Complex permittivity, Silicabased Post-wall Waveguide, Metal 3d Printer, RF CMOS, VCO

At the time of the Great East Japan Earthquake in 2011, quite a few ICT infrastructure suffered catastrophic damage which caused the outage of ICT services in various areas for a long period of time.
As a lesson learned from the Great East Japan Earthquake, the necessity of a disaster-resilient network is strongly recognized. This workshop introduces the latest disaster-resilient network R&D underway in the Cross-ministerial Strategic Innovation Promotion Program.

Keyword ： ICT, Disaster-resilient, Resilient Network, Emergency Telecommunication, Mesh Network, Ad-Hoc

Sustainable utilization of energy and resources are required in various industries to achieve SDGs (Sustainable Development Goals). Rapid and materials-selective heating enabled by microwaves contribute to great reduction in energy consumption, emission of industrial wastes and CO2, as well as small-scale and distributed chemical plants in various industries in chemistry, catalysis, energy, materials, metallurgy and biotechnology. Therefore, microwave manufacturing plant is expected as a new-generation chemical process as well as microwave application.
This workshop provides the latest R&D trends in utilization of microwaves in chemical industries (e.g. synthetic organic chemistry, bio-energy, chemical plant) in which microwave heating application is the most expected as high future growth fields.

Keyword ： Microwave Chemistry, Microwave Effect, Utilization of Biomass, Microwave Manufacturing Plant

Research and development of materials and devices is necessary to make innovative progress for microwave and power circuits/modules.
This workshop introduces on the leading edge electron devices technologies such as the GaN HEMTs, Ga2O3, diamond devices and the device modeling.

Keyword ： Wide Bandgap Semiconductor Electron Devices, Device Modeling, Gallium Nitride, Diamond, Gallium Oxide, Millimeter Wave

Rapid progress of computer hardware and software enables us comfortable electromagnetic simulation environment with commercial simulators. It is difficult to solve problems if we use simulators as a black box. It is also difficult to prepare time for studying principle of electromagnetic simulation when the objective of research or development is applications, in which simulators are used as tools.
The basic principle of electromagnetic simulation, especially about the method of moments (MoM) and finite-difference time-domain (FDTD) method, is explained in this course by professors who are active in the front lines.

Keyword ： Electromagnetic Simulation, Method of Moments (MoM), Finite-Difference Time-Domain (FDTD) Method, Principle

Wireless LANs are becoming increasingly implemented with various types of devices, and further improvement in speed and correspondence to various applications are necessary. Enhancement of Wireless LAN technologies are under standardization at the IEEE 802.11 Working Group.
In this session, technical trends and many types of usage scenarios concerning the latest wireless LAN technology are introduced.

Keyword ： IEEE802.11, IEEE802.11ax, Wireless LAN, Wi-Fi, IEEE802.11ah, HaLOW

Bias circuits are very essential for microwave transistor circuit design. It can be said one of most important design matters is the bias circuit.
In the tutorial lecture, the essence of bias circuit design with microwave transistor circuits including static characteristic and bias point, design procedure for various microwave transistors, and actual design knowhow and troubleshooting for amplifiers and oscillators is widely discussed.

Keyword ： Bias Circuit, Microwave Transistor, Amplifier, Oscillator

Microwave amplifiers have a lot of measurement items for design and evaluation. It is difficult to understand all of them. However, we can't judge the measurement results unless we understand it.
In this FR7B session, basic measurement items in the microwave amplifier are introduced. A few points to be noted on of the measurements are also discussed from a viewpoint of theoretical and practical cases.

Keyword ： Microwave Amplifier, I-V Characteristic, S Parameter, Gain, Noise Figure