Wireless power transmission: a preliminary probe into WPT-related patents and standards of China, the United States and Japan

By Dang Pengfei, Cellon Communications Technology (Shenzhen) Co., Ltd.,[Patent]

For wireless power transmission (WPT), the electromagnetic induction method makes use of a physical phenomenon discovered in the upper half of 1800s. As known widely, a current that passes through a coil produces a magnetic field around it. This electromagnetic effect was discovered by Hans Oersted, a Danish physicist in 1820. A non-electrified coil that comes close to