Yamanaga
Ko Yamanaga, Kyoto-Fu JP
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20160070837 | INDUCTOR SIMULATION METHOD AND INDUCTOR NONLINEAR EQUIVALENT CIRCUIT MODEL - An inductor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when a direct current is superimposed with high precision. An equivalent circuit of an inductor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct current is superimposed are expressed as an approximate function on the basis of actually measured values. A reference current measured by each of voltage source models is referred to by a control voltage source connected in series to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference current Iref. Difference voltages are generated on the basis of the characteristic change ratios and voltages occurring when no direct current is superimposed, they are superimposed on the voltages V | 03-10-2016 |
Masataka Yamanaga, Yamaguchi JP
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20110236634 | Dielectric Ceramic Composition for High-Frequency Use and Method for Producing the Same, as Well as Dielectric Ceramic for High-Frequency Use and Method for Producing the Same and High-Frequency Circuit Element Using the Same - There is provided a dielectric ceramic composition for high-frequency use represented by a composition formula of a(Sn,Ti)O | 09-29-2011 |
Masataka Yamanaga, Ube-Shi JP
Patent application number | Description | Published |
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20150247086 | WAVELENGTH CONVERSION MEMBER AND LIGHT-EMITTING DEVICE EMPLOYING SAME - A method of manufacturing a wavelength conversion member including a polycrystalline ceramics includes mixing a substance serving as a silicon source, a substance serving as an aluminum source, a substance serving as a calcium source, and a substance serving as a europium source; firing the obtained mixture to obtain an oxynitride phosphor powder; then sintering the oxynitride phosphor powder in an inert atmosphere to obtain the polycrystalline ceramics, characterized in that the sintered oxynitride phosphor powder has a composition (excluding oxygen) represented by the Formula: Ca | 09-03-2015 |