Yuta Mouri

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In the design of two-dimensional microstrip antennas, comparing with the end feeding, the center feeding has advantages of wide frequency bandwidth due to decreasing long line effect and low loss due to the shorter length of the feeding line. However, the area of center feeding circuit forms no radiation area around the center, which causes growing(More)
A center-feeding travelling-wave microstrip array antenna is designed to realize a high-gain and broadband two-dimensional array antenna in quasi millimeter-wave band. Microstrip antennas suffer from high feeding-loss in high frequency band. Therefore, center-feeding and travelling-wave operation are applied. To reduce manufacturing errors in etching(More)
A potentially useful method of reducing pollutants in automobile exhaust gas and reducing fuel consumption is the optimum control method for ignition timing of the mixture. Optimum ignition timing varies with the state of engine operation. Moreover, it is a complex function involving parameters of engine operating state. Ignition timing is usually expressed(More)
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