1. Tianjin Key Laboratory of Wireless Mobile Communications and Power Transmission, College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China
2. Industrialization Center of Micro & Nano ICs and Devices, Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen, China
3. Department of Physics, School of Science, Hainan University, Haikou, China