Tadashi Kawai
Professor | Ph.D. in Engineering
Electrical and Electronic Engineering Course
Optical and Wave Engineering Research Group
Professor Kawai holds that a solid grasp of fundamentals is what ultimately shapes a capable engineer, and he works to help students cultivate both the theoretical grounding and the practical skills the profession demands. His research centers on developing high-precision optical and electromagnetic-wave devices for a wide range of applications, alongside systems that harness microwave energy for practical use.
High-Frequency Circuit Technologies and Applications for ICT Innovation
What students can learn
In this theme, students explore the analysis and design of devices and components for IoT and 5G applications, and acquire measurement techniques for evaluating the prototypes they build themselves.
This research aims to develop high-performance devices and components spanning the wide range of frequencies used in IoT, 5G, Beyond 5G, and 6G systems. It addresses a variety of circuit structures, including lumped-element circuits, distributed-constant circuits, and waveguide circuits, and draws on circuit theory together with circuit and electromagnetic simulation, prototyping, and measurement to achieve performance beyond that of conventional circuits.
Development of Heating and Drying Systems Using Microwave Dielectric Heating
What students can learn
Here, students gain experience in waveguide-circuit design and measurement techniques for high-power systems, together with an understanding of overall system design.
This research develops heating, drying, and sterilization systems based on microwaves, a technology applied not only in wireless communication but also in the chemistry and energy fields. Microwave fryers that rely on dielectric heating are investigated as systems in which the frying oil degrades less than it does in gas-fired or electric equivalents. The work also explores replacing the magnetron oscillators conventionally used for microwave heating with solid-state semiconductor devices.
