Filtronic plc (Filtronic) is a manufacturer and supplier of customized RF filters, combiners and microwave sub-systems. Its product portfolio includes a wide range of solutions including Morpheus X2 E-Band transceiver, Cerus E-Band power amplifier, Hercules II High power E-band Transceiver, Taurus E-band power amplifier, Hades X2 E-Band active diplexer, and Tower top amplifiers. The company primarily serves the telecommunications sector, critical communications, space, and aerospace & defense sectors. The company market its products under the brand names of BAE Systems, ESA, Qinetiq, SpaceX and UK Space.

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Filtronic plc arm focuses on product development for LEO space applications, private networks, and aerospace and defense. The company's R&D team plans to continue investing in the development of its own strategic technology roadmap and proprietary IP. As of May 2025, the company has 72 employees in its research and development department. In FY2025, the company incurred R&D expenses of GBP6.6 million, which accounted for 11.7% of the company’s revenue.