Filtronic plc designs, manufactures, and sells advanced radio frequency (RF) communications products for mobile telecommunications infrastructure, defense and aerospace, and public safety market sectors in the United Kingdom, rest of Europe, the Americas, and internationally. It provides mmWave transceiver modules; RF conditioning equipment, including antenna sharing, cross-band, and in-band combiners, as well as custom filters and combiners; tower top amplifiers; and microwave and mmWave components comprising GaN amplifiers, microwave and mmWave filters and diplexers, E-band power amplifiers, and data links. The company also offers small cell and interference mitigation filters; and E-band transceiver modules for 5G XHaul applications. In addition, it provides contract manufacturing, microelectronic assembling, module and device performance testing, business systems and program management, supply chain, and design services. The company was formerly known as Filtronic Comtek plc and changed its name to Filtronic plc in March 1998. Filtronic plc was founded in 1977 and is headquartered in Leeds, the United Kingdom.