connected life for the future


CEO:Maeda Ichiro
「Each and every one of our employees will hone their skills and continue to create products and services as a truly technical group.」

Kyushu Ten was founded in December 1967 in Sasebo City, Nagasaki Prefecture. Starting from the repair of wireless equipment, we have expanded our business areas to include manufacturing, computer equipment maintenance, construction, hardware development, software development, and repair, and we celebrated our 55th anniversary on December 1, 2022.
As mentioned above, our business areas are diverse, but can be broadly divided into services (Koto) and manufacturing (Mono). We are determined to weave synergy between these two pillars and continue to move forward step by step in order to provide one-stop solutions to our customers.
We have been recognized by the Ministry of Economy, Trade and Industry as a "Health & Productivity Management Outstanding Organization 2023" and by Nagasaki Prefecture as a 5-star company in the "N-Pika" certification system for companies that practice creating a workplace that is easy for everyone to work in. We will continue to contribute to the local community and play a role in promoting the SDGs by pursuing health management.
We will continue to uphold our corporate philosophy of “Customers First" and " Establishment of a sensibility-based company", and together with our employees, we will continue to take on the challenges of the 60th and 70th anniversaries, and contribute to the creation of a sustainable society.

June 2023

CEO Ichiro Maeda

Products & Service

Image : Business contents

Business contents

Image : QRIoTⅡ


Image : ACE.MediStation



Image : Sasebo Head Office Factory

Sasebo Head Office Factory

Image : Manufacturing Equipments

Manufacturing Equipments

Image : Test Equipments

Test Equipments

Reserch and development

Technology of antenna

High freqency antenna for 5G

We have designed and evaluated a millimeter-wave-compatible 4x4 array antenna for 5G in an industry-university joint research with Kyushu University, and submitted the results to IEEE for publication.


Patch antennas are frequently used in broadband communications such as 28 GHz. However, patch antennas have a large GND metal and require a thick dielectric substrate, and this size becomes a bottleneck when pursuing further miniaturization of IoT devices. Therefore, in a previous joint research with Kyushu University, we designed and evaluated a 4x4 beamforming array antenna using a one-sided directional slot antenna with the same performance, which has an upper antenna layer, a lower floating metal, and a thin dielectric substrate without a large GND metal layer. The results were obtained and are summarized in the paper.


Prof. Haruichi Kanaya, Takuhiro Ide, Kyushu University
Assistant Professor Chai-Eu Guan, Nagasaki University
KYUSHU TEN LIMITED Akira Ishikawa, Shugo Fukagawa, Ryuji Kitaya
Proceedings of 2020 IEEE International Symposium on Radio-Frequency Integration Technology, 169-171, 2020.


4×4 array antenna
4×4 array antenna