1. School of Integrated Circuits and Electronics, Beijing Key Laboratory of Millimeter Wave and Terahertz Technology, Beijing Institute of Technology, Beijing, China
2. School of Microelectronics, Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin University 92 Weijin Road, Tianjin, China
3. System Technology Innovation Research Department, Wireless Network, Huawei Technology, China
4. Department of Electrical Engineering and Computer Science, Radiation Laboratory, University of Michigan, Ann Arbor, MI, USA