Wireless power and information transfer in closed space utilizing frequency selected surfaces

This paper presents a novel wireless power and information transfer (WPIT) in a closed space utilizing frequency selected surfaces (FSSs). The framework of a greenhouse or a building can be considered as the FSSs. Therefore, the frequency of the power provided to the sensors can be confined inside the frame-work and a communication frequency to the sensor can be transmitted and received from the outside. The concept using a metal mesh box with a shelf is demonstrated. First, it is confirmed that the power transfer frequency can be confined inside the box by S-parameters from port 1 to each received port and the electric field standing wave in the box. Then, it is demonstrated that the power can be transferred to the Line-Of-Sight (LOS) and Non-Line-Of-Sight (NLOS) sensors in the metal mesh box and the sensing data can be received outside the box.