Meta-material Sensors-enabled Internet of Things: Angular Range Extension

In the coming 6G communications, the internet of things (IoT) is the core foundation technology for various key areas [1]. According to related studies, the number of IoT sensors deployed in 6G will be approximately 10 times larger than that in 5G. Therefore, IoT sensors in 6G are required to have extremely low cost, low power consumption, and high robustness so that they can effectively sustain massive deployment. However, traditional sensors containing costly and vulnerable fine structures and requiring external power sources can hardly meet the above requirements. Fortunately, meta-material IoT (meta-IoT) sensors are simple in structure, low in cost, and can obtain power supply via wireless signals, showing great potential for application.