TERASi raises €11 million for portable defence communications

Stockholm-based TERASi announced an €11 million seed round on 22 September 2026 to scale its wireless communications technology for European defence. The company, a spinout from KTH Royal Institute of Technology, says the funding will help it reach European armed forces, grow its team and develop new products. 13

Who invested in TERASi?

The NATO Innovation Fund and Join Capital co-led the seed round. In-Q-Tel and D3 joined as new investors, while Navigare Ventures, Almi Invest, Onsight Ventures, Further Than Capital and KTH Ventures returned. The NATO Innovation Fund described the deal as its first investment in Sweden. 29

What does TERASi’s technology do?

TERASi develops compact, high-frequency wireless hardware for high-capacity links. Its RU1 millimetre-wave radio is designed for rapid deployment, including on tripods or drones, and has been described as capable of gigabit-speed communication. TERASi says its AirCore technology enables compact radio components. The aim is to provide a communications option where fixed fibre or towers are impractical, unavailable or vulnerable. 63032

The radios use narrow, focused beams, which can make a link harder to intercept or disrupt than a broadly transmitted signal. That is a qualified technical advantage, not proof that a system is impossible to detect or jam. Although the NATO Innovation Fund calls TERASi’s communications “unjammable and undetectable,” the provided evidence does not independently verify those absolute claims. 2432

What will the funding change?

TERASi says it will use the round to scale deployment to European armed forces, expand its team and develop products. The available reporting does not identify specific military contracts, delivery dates, hiring targets or product launches. 19

The strategic appeal is a portable, high-data-capacity link that does not depend on a fixed fibre connection at the point of deployment. That could be useful beyond defence when conventional infrastructure cannot be relied on: TERASi has also presented the RU1 for disaster relief and industrial operations. Those potential uses should not be mistaken for verified performance in every emergency, satellite, telecoms or industrial setting. 62132

TERASi’s funding and stated plans are well documented. Its broader claim to be Europe’s only manufacturer combining security, deployability and high-speed capacity in one flexible system is not established by the provided sources, nor are absolute guarantees against interception or jamming. 129