Wireless Power Transfer Based on Double Loop Antennas

According to electromagnetic theory, there are several ways to transfer power without electrical wires. We found another method for the purpose based on magnetic dipole theory, the detailed theoretical and simulated analyses in this paper has shown that it can be achieved. We used one loop antenna for transfer and the other for receiving, and found the system efficiency saturates when the operation frequency reaches 8MHz, the maximal output power is about 0.02mW. The low efficiency of the magnetic dipole makes the double loop antennas transfer efficiency and output power not ideal. Therefore the suggestion of the experiment is using strong directional helical antenna to get a better result in the future.