Design and Implementation of Anti-wireless Electricity Rubbing System

For the recent decade, the high-speed development of micro and portable electronic products meets an important technology barrier, which is the lithium-ion batteries cannot support the battery life of modern electronic products. In the circumstance so far, users always must rely on bigger and heavier batteries or external devices like power bank. This problem impedes the development of portable electronics industry. In this article, a wireless power transmission (WPT) method based on distributed beamforming are used to deliver the energy and ensure the maximum energy level at the target location. This method provides a highly efficient wireless charging solution in a safe way by controlling the transforming power level of target devices within the security scope. It can make sure the power level of other positions in a safe range, that is, to ensure the signal strength of the legal position in the area is high, and the signal strength of the illegal position is as low as possible, to achieve the purpose of preventing wireless rubbing electricity. The anti-wireless electricity rubbing system concentrates the energy on the receiver accurately while having a lower energy density in other areas. To transfer the same amount of energy to the devices, RF energy in the charging area powered by this system will lower than that in traditional beamforming systems, providing a feasible and practical charging solution for the Internet of Things system.