Hittite Microwave Corporation designs and develops integrated circuits (ICs), modules, subsystems and instrumentation for radio frequency (RF) microwave and millimeterwave applications. It offers a range of standard and custom ICs, modules, subsystems and instrumentation that perform a range of functions across the RF, microwave and millimeterwave frequency bands. As of December 31, 2011, it had more than 980 products, which may be categorized for descriptive purposes into 34 functional product lines. It offers a range of radio frequency integrated circuits (RFICs), monolithic microwave integrated circuits (MMICs), multi-chip modules (MCMs), subsystems and instruments that perform a range of signal processing functions and that operate across the RF, microwave, millimeterwave and visible light frequency spectrum. In January 2011, it acquired Arctic Silicon Devices.