Hiroya Deguchi

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A 40W average output power asymmetric Doherty power amplifier (PA) for 2.6GHz band was developed using broadband inverse class F GaN HEMTs. The Doherty PA was successfully designed for 2.5GHz-2.7GHz using simple small signal analysis with optimum load impedance obtained by load-pull measurement. To the main and peak amplifiers the saturated power of 105W(More)
The water extract of Pruni Cortex, which is obtained from the bark of Prunus jamasakura, is a major component in Brocin. We investigated the constituents of the water and methanolic extracts of Pruni Cortex. From the water extractive, two flavonoids (sakuranin and neosakuranin; major constituents of this extractive), four known lignans, and six aromatic(More)
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