Filtronic plc is a world leader in the design and manufacture of a broad range of customised RF, microwave and millimetre wave cellular and broadband components and subsystems. The company's products are used in wireless communication infrastructure equipment, cellular handsets, electronic defence systems, and cable communication systems. These products filter, amplify and transmit and receive RF signals. Filtronic can supply products for every significant transmission standard and modulation system in the world, operating at any frequency.