RF System Design for Phased Array Beam Steering and Rotational Control of Linear Polarization for Wireless Power Transfer

Wireless power transfer is of interest for applications such as remote, inaccessible IoT sensor deployment. There is a challenge to charging these sensors due to their remote location and inaccessibility. This includes industrial applications where it is impractical or costly to run wiring on rotating or moving components of systems, as well as underground sensors and sensors embedded in walls, floors and ceilings. To this end, this work addresses the radio frequency system design for a dual feed, patch antenna array in 2.4 GHz frequency range. An RF system is designed to control the linear polarization of a dual feed patch antenna to maximize power transfer. A preliminary RF system design is proposed, and possible available components identified. The RF system includes beam steering with 6-bit phase shifters for 5.625 degree increments of phase shift for a 7.153 degree beamwidth main lobe. SystemVue is used to design the RF system and simulate the beam steering. CST is used for the patch array antenna design and to analyze the control of the linear polarization.