The plant has also invested in metal 3D printing to address the challenges associated with the increasing frequency of antenna systems. Today, next-generation equipment—such as that used in the Syracuse IV —the French military communications system using geostationary satellites—operate in frequency bands ranging from a few gigahertz to several tens of gigahertz. Multifrequency capability allows for simultaneous communication across multiple frequency bands within a compact space, without altering the structure. To meet these requirements, Ineo Defense now uses certain passive microwave components manufactured using additive manufacturing—waveguides, couplers, filters—that are typically machined in multiple parts. This method offers greater lightness and precision, and significantly reduces assembly time while optimizing radio frequency (RF) and mechanical performance. 

Each antenna is then subjected to a series of rigorous electromagnetic tests. These tests are conducted primarily in anechoic chambers—enclosed spaces partially or fully lined with absorptive materials—designed to eliminate all reflections and parasitic noise. This type of environment simulates free-space propagation conditions in order to measure the antenna’s actual radiation performance without detrimental external interference.

Near-field and far-field test benches complete this testing phase. They enable the precise characterization of directivity, gain, beam stability, and frequency response. These steps are essential to ensure the equipment functions properly once integrated into its operational environment, whether it is a ground-based radar, a ship, or an aircraft.