Koichi Arai

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Impacts of the 4H-SiC/SiO<sub>2</sub> interface states on the switching operation of power MOSFETs are evaluated. The energy distributions of the interface states are characterized using measured C-V curves of the MOS capacitors with the aid of TCAD simulation. The effect of nitrogen incorporation into the SiC/SiO<sub>2</sub> interface via post-oxidation(More)
developed for use in training of substation maintenance personnel. The simulator allows users to go through a routine inspection procedure involving a variety of operations as they "walk" through a virtual substation. Its principal functions include visual and aural simulation of situations that maintenance personnel may encounter in an actual substation.(More)
This paper presents a fast SPT-term allocation scheme and an efficient FPGA implementation of FIR filters for Software Defined Radio (SDR) applications. Direct conversion method based on RF direct sampling is nowadays widely used in SDR applications. Fast and accurate digital filters are required for RF direct sampling and processing in direct conversion,(More)
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