作者机构:[1]School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China, [2]State Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing 102206, China, [3]School of Science, Xidian University, Xi'an 710071, China
相关基金:supported by National Natural Science Foundation of China (Nos. 40831062, 60971034) and the Scientific Research Starting Foundation of University of Electronic Science and Technology of China (No. Y02002010401066)