- Business
- Filtronic plc designs and manufactures high-performance RF, microwave, and mmWave components and subsystems for telecommunications infrastructure, defence, aerospace, space, critical communications, and adjacent markets including test and measurement, low-latency private networks, quantum computing, and trackside-to-train communications; core products encompass solid-state power amplifiers (SSPAs), transceivers, and filters such as metal cavity, ceramic, combline, interdigital, lumped element, suspended substrate, waveguide, and thin-film variants, with specialized E-band solutions (60-90 GHz) enabling high-capacity XHaul for 5G and low Earth orbit networks, alongside bespoke design, contract microelectronic manufacturing, and testing services up to 175 GHz. Founded in 1977 and headquartered at Plexus 1, NETPark in Sedgefield, County Durham, United Kingdom, the company maintains facilities in Leeds, Manchester, Cambridge, and a US manufacturing site in Salisbury, Maryland, serving global technology leaders, OEMs, mobile network operators, and defence primes. Recent developments include an expanded strategic partnership with SpaceX announced in March 2025 to increase supply of E-band SSPA modules for the Starlink constellation, building on an initial April 2024 agreement; a £13.4m contract award in July 2025 to supply high-performance modules for an electronic sensor system to a defence prime with deliveries commencing mid-2026; and new contracts with Airbus for constellation satellites, Leonardo for defence applications, and contributions to Viasat's direct-to-device project supported by the European Space Agency.