connected life for the future


CEO:Maeda Ichiro
「As a true engineering group, we will continue to create products and services.」

Kyushu Ten was founded in December 1967 in Sasebo, Nagasaki. Starting from the repair of wireless equipment, the company has expanded its business domain to manufacturing, computer equipment maintenance, construction, hardware development, software development, and repair, and will celebrate its 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 move forward step by step so that these two pillars can create synergy and further provide a one-stop solution.
Last year, we were recognized by the Ministry of Economy, Trade and Industry as a " Local Future Leading Company " and in March of this year.In addition to contributing to the local community, we would like to play a part in paving the way for an SDG-oriented society by pursuing health management.
We will continue to uphold our corporate philosophy of "Customers First" and "Establishment of a Sensible 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.

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