[1] Zhejiang Univ, Lab Appl Res Electromagnet, Hangzhou 310027, Peoples R China
[2] China Ship Dev & Design Ctr, Sci & Technol Electromagnet Compatibil Lab, Wuhan 430064, Peoples R China
[3] China Res Inst Radiowave Propagat, Xinxiang 453003, Peoples R China
[4] Natl Key Lab Sci & Technol Space Microwave, Xian 710100, Peoples R China
[5] Zhejiang Univ, Dept Elect Engn, Hangzhou 310015, Zhejiang, Peoples R China
[6] Nanjing Inst Elect Equipment, Nanjing 210007, Jiangsu, Peoples R China
[7] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA