Yuji Ando

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If intelligent systems are to interact with humans in a natural manner, the ability to describe daily life activities is important. To achieve this, sensing human activities by capturing multimodal information is necessary. In this study, we consider a smart environment for sensing activities with respect to realistic scenarios. We next propose a sentence(More)
We have successfully developed high-efficiency and high-power microwave amplifiers using a GaN field-effect transistor (FET) on a low-resistivity (LR) Si substrate for the first time. By introducing the LR Si substrate whose resistivity is less sensitive over temperature, the efficiency characteristics in high-temperature operation were significantly(More)
We have successfully developed broadband low distortion cable television (CATV) power amplifier with AlGaN/GaN hetero-structure field-effect transistor (HFET) capable of high voltage operation for high output power. To realize low distortion characteristics required for modern CATV system, we investigated low distortion cascode configuration composed of(More)
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