Ookuma Diamond Device Selected for JAXA 'Space Strategy Fund Project' SX Core Area Development Research 'SX-ARK' (Heat and Devices)
Ookuma Diamond Device Co., Ltd. has been selected for JAXA's Space Strategy Fund project. The company will utilize its diamond semiconductor technology to solve thermal constraints in small SAR satellites and improve observation performance, collaborating with Space BD Inc.
📋 Article Processing Timeline
- 📰 Published: April 8, 2026 at 16:00
- 🔍 Collected: April 8, 2026 at 07:30
- 🤖 AI Analyzed: April 21, 2026 at 01:42 (306h 12m after Collected)
We are pleased to announce that the proposal 'Research and Development on Breaking Thermal Constraints and Improving Performance of Small SAR Satellites using Diamond Semiconductors' by Ookuma Diamond Device Co., Ltd. (Headquarters: Sapporo City, Hokkaido; Representative Director: Naohisa Hoshikawa; hereinafter 'the Company'), which aims for the social implementation of diamond semiconductors, has been adopted for the Space Strategy Fund 'SX Core Area Development Research [SX-ARK] (Heat and Devices)' implemented by the Japan Aerospace Exploration Agency (JAXA).
This technology development project aims to improve the degree of freedom in satellite thermal design and observation performance by utilizing our diamond semiconductor technology to address the thermal constraints caused by transmission power amplifiers (PA), a critical issue in small SAR satellites. Moving forward, we will promote the research and development of diamond semiconductor technology with an eye toward its application in the space sector.
To date, the Company has been engaged in the research and development of diamond semiconductor devices that operate even in high-radiation and high-temperature environments, backed by the decommissioning response at the Fukushima Daiichi Nuclear Power Plant. Based on the severe environment resistance technology cultivated there, we will challenge the solution of thermal issues faced by the space sector.
In addition, Space BD Inc., which develops comprehensive services in the space industry, will participate in this project as a cooperating organization and support the promotion of the project while looking ahead to its utilization in the space sector.
The Company will tackle the resolution of thermal issues in small SAR satellites through this project and contribute to the strengthening of the technological foundation in the space sector and the development of Japan's space industry foundation.
For JAXA's public materials regarding this adoption, please refer to the following:
https://fund.jaxa.jp/content/uploads/kekka2_18.pdf
**■ Overview of the Adopted Project**
System name: Space Strategy Fund Project
Technology development theme: SX Core Area Development Research 'SX-ARK' (Heat and Devices)
Technology development project name: Research and Development on Breaking Thermal Constraints and Improving Performance of Small SAR Satellites using Diamond Semiconductors
Representative organization: Ookuma Diamond Device Co., Ltd.
Principal Investigator: Representative Director Naohisa Hoshikawa
**■ Comment from Representative Director Naohisa Hoshikawa**
'I am deeply honored that our proposal has been adopted for the Space Strategy Fund project. Starting from the development of severe environment-resistant devices for the decommissioning of the Fukushima Daiichi Nuclear Power Plant, our company has challenged the social implementation of diamond semiconductors. In this project, we will tackle the essential issue of thermal constraints in the space sector head-on with our technology. Collaborating with related organizations such as Space BD Inc., we will contribute to strengthening Japan's space industry foundation with an eye on future space implementation and commercialization.'
**■ Company Overview**
Company Name: Ookuma Diamond Device Co., Ltd.
Representative: Representative Director Naohisa Hoshikawa
Established: March 1, 2022
Location: Kita 21-jo Nishi 12-chome 2, Kita-ku, Sapporo, Hokkaido (Hokkaido University Business Spring)
URL:
This technology development project aims to improve the degree of freedom in satellite thermal design and observation performance by utilizing our diamond semiconductor technology to address the thermal constraints caused by transmission power amplifiers (PA), a critical issue in small SAR satellites. Moving forward, we will promote the research and development of diamond semiconductor technology with an eye toward its application in the space sector.
To date, the Company has been engaged in the research and development of diamond semiconductor devices that operate even in high-radiation and high-temperature environments, backed by the decommissioning response at the Fukushima Daiichi Nuclear Power Plant. Based on the severe environment resistance technology cultivated there, we will challenge the solution of thermal issues faced by the space sector.
In addition, Space BD Inc., which develops comprehensive services in the space industry, will participate in this project as a cooperating organization and support the promotion of the project while looking ahead to its utilization in the space sector.
The Company will tackle the resolution of thermal issues in small SAR satellites through this project and contribute to the strengthening of the technological foundation in the space sector and the development of Japan's space industry foundation.
For JAXA's public materials regarding this adoption, please refer to the following:
https://fund.jaxa.jp/content/uploads/kekka2_18.pdf
**■ Overview of the Adopted Project**
System name: Space Strategy Fund Project
Technology development theme: SX Core Area Development Research 'SX-ARK' (Heat and Devices)
Technology development project name: Research and Development on Breaking Thermal Constraints and Improving Performance of Small SAR Satellites using Diamond Semiconductors
Representative organization: Ookuma Diamond Device Co., Ltd.
Principal Investigator: Representative Director Naohisa Hoshikawa
**■ Comment from Representative Director Naohisa Hoshikawa**
'I am deeply honored that our proposal has been adopted for the Space Strategy Fund project. Starting from the development of severe environment-resistant devices for the decommissioning of the Fukushima Daiichi Nuclear Power Plant, our company has challenged the social implementation of diamond semiconductors. In this project, we will tackle the essential issue of thermal constraints in the space sector head-on with our technology. Collaborating with related organizations such as Space BD Inc., we will contribute to strengthening Japan's space industry foundation with an eye on future space implementation and commercialization.'
**■ Company Overview**
Company Name: Ookuma Diamond Device Co., Ltd.
Representative: Representative Director Naohisa Hoshikawa
Established: March 1, 2022
Location: Kita 21-jo Nishi 12-chome 2, Kita-ku, Sapporo, Hokkaido (Hokkaido University Business Spring)
URL: