1. Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, Xidian University, Xi’an, China
2. Guangzhou Institute of Technology, Xidian University, Guangzhou, China
3. Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, and the School of Mechano-Electronic Engineering, Xidian University, Xi’an, China
4. Research Institute of Shaanxi Huanghe Group Company Ltd., Xi’an, China
5. 29th Research Institute of China Electronics Technology Group Corporation, Chengdu, China