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https://hanzama.x0.to/2020/09/23/the-worlds-highest-power-conversion-efficiency-with-wireless-power-transmission-using-microwaves-5-8ghz-kanazawa-institute-of-technology/
マイクロ波(5.8GHz)を用いた無線電力伝送で世界最高の電力変換効率を達成(金沢工業大学)