A Rotman Lens Based Wireless Power Transfer

A wireless power transfer system based on Rotman lens and antenna array providing the beam steering is proposed. The proposed wireless power transfer array test system was fabricated and measures for operation at 5.85GHz central frequency. The developed antenna array based on the Rotman lens is capable of emitting electromagnetic energy in eight directions. The range of scanning angles of the antenna array is from --40° to 40°. The width of one beam is 10°. The direction of arrival was experimentally evaluated. To do this, the power level of the received signal at the ports was measured at different angles of incidence of the pilot signal. Also, a rectenna was developed and manufactured for a wireless power transmission system. The rectenna contains a single-board computer, which allows you to control the level of received power and transmit location information to the transmitting part of the system. The efficiency of the device estimated experimentally is 58%. The range of received power range from -30 dBm to 5 dBm.