Mitsubishi Electric´s GaN devices employed in infrastructure systems

In this article, GaN related development activities of Mitsubishi Electric Corporation and their utilization in the infrastructure systems are described. Since the world´s first C-band GaN amplifier with 140W output power was reported in IMS2004, Mitsubishi Electric has developed many GaN high power amplifiers and commercialized some GaN devices. Also those GaN devices have been applied to solid state weather radar systems, satellite communication systems, and microwave power transmission systems etc. Brief introduction of such activities will be given. Finally, some possible application fields for GaN devices will be discussed.