Kouzo Shiojima

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We developed a wearable sensor system for estimating finger contact force by measuring the mechanical deformation of the side of the fingerpad. The first part of this paper describes and validates the principle of contact force estimation, and discusses the design criteria of the wearable sensor. We then describe the manufacture of a practical sensor system(More)
We have fabricated dual-gate AlGaN/GaN high-electron-mobility transistors (HEMTs) with a short gate on SiC substrates for use in high-power mixers and have measured their pulse modulation characteristics. A device with a T-shaped gate (0.15 mum times 200 mum) modulates a 24-GHz local (LO) signal with 0.4-ns-wide pulses. The peak output power is as high as(More)
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