Filtronic Plc designs and manufactures broadband microwave and base station filter products for wireless telecommunications systems. It operates through two segments: Wireless and Broadband. The Wireless business segment invest in wireless engineering, sales and marketing resources in order to support existing programmes and to develop additional products to support customers upgrading their 3G and 4G mobile networks. The Broadband segment designs and manufactures custom microwave and millimeter wave electronic components for the wireless PTP radio market, defense, aerospace and security applications. The company was founded by John David Rhodes in June 1977 and is headquartered in Shipley, the United Kingdom.