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Okada Lab
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A lab that designs millimeter-wave integrated circuits for next-generation wireless communication.
AboutAbout the lab
Pioneering the millimeter-wave frontier.
The Okada Lab studies millimeter-wave radio circuits and analog-digital mixed-signal circuits for next-generation wireless communication.
To make millimeter waves usable in familiar devices such as smartphones, the lab builds radios with CMOS integrated circuits, which can be mass-produced at low cost.
The lab covers not only circuit design but also antenna and board design, as well as measurements made by actually transmitting radio waves.
It advances research and development through industry-academia collaboration with various companies in Japan.
Key terms
- Millimeter wave
- Radio waves with frequencies of 30-300 GHz. The wavelength is 1-10 mm, and the wide bandwidth available enables high-speed communication.
- CMOS integrated circuit
- An integrated circuit built from silicon transistors. It was originally intended for digital circuits and can be mass-produced at low cost.
- Phased array
- A technology that adjusts the phase differences between the signals of many arranged antennas to change the direction of the transmitted radio waves electronically.
NewsLab news
Developed a sub-terahertz dual-polarization MIMO radio module with integrated antennas
Developed a 300 GHz-band 2D phased-array transceiver IC with on-chip antennas
Developed a millimeter-wave radio that communicates efficiently across the entire 57-71 GHz band
Developed a millimeter-wave communication IC that improves frequency utilization efficiency
A doctoral student received the Best Poster Presentation Award at the MCRG workshop
ResearchResearch themes
Using miniaturized CMOS integrated circuits, the lab studies millimeter-wave radio circuits and analog-digital mixed-signal circuits for next-generation wireless communication. It works broadly on systems, devices, and design methodologies, not just circuits, aiming to systematize the technology and put it into practical use.
*Illustrative imageAutomatic circuit design with AI
Analog circuits are still mostly designed by hand. The lab organizes and accumulates designers' know-how as reusable "design knowledge," aiming to achieve automatic design with AI.
*Illustrative imageMillimeter-wave radios built with CMOS
This research realizes millimeter-wave radios, which have used expensive compound semiconductors, with CMOS integrated circuits that can be mass-produced at low cost. The lab also designs antennas and boards and performs measurements by transmitting radio waves.
*Illustrative imagePhased-array wireless communication
Toward future wireless communication such as 6G and 7G, the lab works on higher speeds with millimeter-wave MIMO, which transmits and receives simultaneously with multiple antennas, on high-precision, high-speed control of the direction of radio waves, and on lower power consumption.
*Illustrative imageUltra-high-speed wireless communication in the 60 GHz band
The lab studies radios for ultra-high-speed communication in the 60 GHz band, which offers a very wide frequency bandwidth. This band is expected to be used as next-generation Wi-Fi technology.
MembersFaculty
The members of the Okada Lab consist of faculty, researchers, secretaries, doctoral, master's, and undergraduate students, and research students and international exchange students.As of 2026
- ProfessorKenichi OkadaPublications ↗
- Assistant ProfessorYuncheng ZhangPublications ↗
- Project Professor酒井 啓之
- Project Professor國弘 和明
- Project Assistant ProfessorYudai YamazakiPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “07R01” Mister rf / CC BY-SA 4.0 (cropped)
- Automatic circuit design with AI: “Inverter Layout - Magic” Jovianeye / CC BY-SA 3.0 (cropped)
- Millimeter-wave radios built with CMOS: “Chip bond wire” Weirdmeister / CC BY-SA 4.0 (cropped)
- Phased-array wireless communication: “Antenna array of URAN-2 radio teelscope” YeS (Serge Yerin) / CC BY-SA 4.0 (cropped)
- Ultra-high-speed wireless communication in the 60 GHz band: “CSIRO ScienceImage 11278 CSIROs prototype phased array feed in position on an antenna for testing” David McClenaghan, CSIRO / CC BY 3.0 (cropped)
- Related lab (白根研究室): “DARPA amplifier on silicon USC” University of Southern California and Columbia University / Public domain (cropped)
- Related lab (戸村研究室): “Radio-frequency-anechoic-chamber-HDR-0a” Adamantios / CC BY-SA 3.0 (cropped)
- Related lab (庄司研究室): “Optical patchcord” Sunmosk / CC BY 4.0 (cropped)
- Related lab (伊藤研究室): “ΜA791KC die” Mister rf / CC BY-SA 4.0 (cropped)
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