Wireless Power Transfer (WPT) is an attractive technology because it can supply power to IoT devices where battery replacement is difficult or the maintenance cost is high. Polarization Switching WPT antenna (PS-WPT antenna) is proposed in this paper. The polarization switching characteristic makes this design a good candidate for 5G-IoT sensors powered by using wireless power transfer. The 3GPP had standardized 5G-IoT - in June 2016. It provides deep indoor and wide area coverage extension of 20dB over GSM. The 5G-IoT network can support 50,000 users per cell and a battery life of more than ten years. The key problems of the 5G-IoT network protocol are the coordination and communication between large number of IoT devices and the base station. Using the PS-WPT antenna technology, the cell coverage could be separated into several partitions to wake up IoT devices within one partition of the cell to avoid the collision. The PS-WPT antenna has been designed and analyzed in this paper for the polling protocol to solve the problem of communication and collision between 50,000 IoT devices per cell within the base station.