Europe is exploring whether a single radio frequency (RF) architecture can replace traditionally separate radar, electronic warfare, and communications systems, as part of a new research effort led by Indra Group.
The initiative, known as SCEPTER (European Multifunction System Concept applied to Communications, Electronic Warfare and Radar), is funded by the European Defence Fund.
It aims to demonstrate how active electronically scanned array (AESA) technology can underpin a unified system capable of handling multiple RF roles simultaneously.
Integrating Radar, EW, and Communications
SCEPTER builds on earlier European work, including the CROWN project, also coordinated by Indra.
The current effort focuses on enabling technologies such as broadband AESA antennas, direct RF digitization, and software – defined resource management.
Together, these are intended to allow a single system to dynamically allocate spectrum use depending on mission needs.
In practical terms, the system under development is designed to detect, jam, protect, and communicate within the same architecture, operating these functions in parallel.
The approach reflects a broader shift in defence electronics toward software-defined systems and shared apertures, which are increasingly used to improve flexibility and interoperability on modern platforms.
SCEPTER Program
The project brings together a consortium of 14 organizations from nine European countries, including industry and research partners such as Leonardo, Hensoldt, Thales, and Saab.
Indra is leading the design of a technology demonstrator based on AESA architecture and commercially available components to accelerate development timelines and reduce cost.
The program also incorporates emerging technologies such as artificial intelligence for spectrum management, gallium nitride semiconductors to improve power efficiency, and digital twin modelling for system design and testing.
SCEPTER is expected to deliver demonstrators of key subsystems, including RF modules, radiating panels, and digital processing back – ends.
While the project is focused on research and technology development rather than immediate deployment, it aligns with broader European efforts to strengthen sovereign defense electronics capabilities and reduce reliance on external suppliers.
- The Defense Post