Filtronic has secured its first contract with a US manufacturer of geostationary satellites, marking a new customer and orbital market for the UK radio-frequency engineering business. The initial $0.3m award covers development work for a customer operating satellites in the Ka-band. Filtronic expects opportunities for subsequent production orders, while the value and delivery volumes of any later manufacturing contracts remain subject to further customer decisions.
The contract accompanies the completion of Filtronic’s first 200W solid-state power amplifier (SSPA) system, developed for medium Earth orbit and geostationary satellite applications. The company describes the unit as delivering ten times the power of its Cerus 32 gallium arsenide product. The higher-power design uses gallium nitride technology, which Filtronic has been incorporating into its satellite communications portfolio as it expands beyond equipment supplied primarily for low Earth orbit networks.
At an altitude of approximately 35,800km, geostationary satellites remain above roughly the same point on Earth, while low Earth orbit systems move rapidly across the sky at much shorter ranges. Those different geometries affect link budgets, antenna arrangements, RF power requirements and thermal management. Filtronic’s Ka-band customer development work and its separately completed 200W platform extend the range of orbital and communications requirements it can address, with each programme proceeding through its own engineering and qualification stages.
Solid-state power amplification increases the strength of an RF signal before transmission. In high-frequency satellite links, designers must balance output power with linearity, conversion efficiency, heat dissipation and reliability. Gallium nitride devices can operate at higher power densities than older gallium arsenide approaches in suitable circuit designs, but packaging, electrical bias, cooling and the rest of the amplifier chain still determine useful system performance. Moving from individual microwave components towards integrated amplification equipment adds power supplies, controls and thermal interfaces to the manufacturing and qualification work.
The manufacturer already supplies Cerus E-band gallium nitride amplifiers for satellite communications. Its $68.1m (£51.3m) SpaceX follow-on order, secured at the beginning of October, covers those established amplifier units. The latest GEO award adds a different US customer and a Ka-band development programme, widening Filtronic’s order mix alongside the larger E-band manufacturing commitment.
Two further contracts, together worth $16.0m (£11.1m), have also been secured with a US customer since the beginning of Filtronic’s 2027 financial year. Those agreements cover the design, development and manufacture of prototype units for satellite deployment. Prototype work creates opportunities to prove electrical performance and production processes before wider manufacturing decisions, while repeatability across units becomes increasingly important once programmes advance from engineering evaluation to volume supply.
As its customer programmes become more integrated, Filtronic is also adding signal conversion to its amplifier range. The company has completed its first digital intermediate-frequency product and demonstrated it at Plugfest, an interoperability testing event in Silicon Valley. Intermediate-frequency processing provides a point between baseband electronics and the radio-frequency stages at which signals can be converted or handled within a wider communications architecture. This capability can sit alongside amplification, power supplies and control electronics when customers specify more complete RF systems.
Defence contracts add a separate route for its microwave engineering capability. Filtronic has secured three awards worth a combined £2.1m for technology used in airborne radar systems. Radar equipment also depends on controlled transmission and reception of high-frequency signals, with demanding environmental, power and reliability requirements. The company secured a £2m UK Defence Innovation grant earlier in the financial year to advance chipset technology for ground-based and satellite payloads, linking semiconductor development with later system integration.
Integrating semiconductor devices into higher-power systems requires electrical characterisation to proceed alongside mechanical packaging, thermal design and system-level testing. The demands differ between a prototype for a satellite customer and equipment entering repeat manufacture: the latter must reproduce RF performance across production units as well as meet a project’s interface and environmental requirements. Filtronic’s portfolio now spans those stages, so customer qualification and manufacturing readiness will determine how each award progresses through the factory.
Filtronic expects to trade in line with market forecasts, supported by its contracted order book for the current financial year. The $0.3m GEO award starts with development work, while the other prototype programmes, completed 200W amplifier and airborne radar contracts place different demands on design and test resources. Further production volumes will follow the individual customer programmes as they advance from prototype assessment to manufacturing orders.
