Mitsubishi Semiconductors provides Silicon and GaAs devices for communication networks.
Mitsubishi GaAs transistors and amplifiers are designed for communications networks such as high speed internet, video-on-demand and high-speed data communications. With amplifiers operating up to 20GHz, Mitsubishi GaAs products have applications from cellular and WiMAX base stations to satellite communications.
Mitsubishi Silicon transistors and modules support applications in Mobile Radio including GSM/AMPS car phones and Telematics. Devices operating at 7.2V, 9.6V and 12.5V support frequency ranges to about 1GHz. Various packages from SOT-89 and TO-220S to ceramic and specialized modules are available.
Mitsubishi Articles and White Papers
GaN HEMP Technologies for Space and Radio Applications
(excerpt from Microwave Journal Aug-2011)