1. Department of Electronic Engineering; National Chin-Yi University of Technology; No. 35, Lane 215, Sec. 1, Chung-Shan Road; Taiping City; Taichung County; 411; Taiwan, R.O.C.
2. Department of Electrical Engineering; National Cheng Kung University; No. 1 University Road; Tainan; 70101; Taiwan, R.O.C.
3. Department of Electrical Engineering; I-Shou University; No. 1, Sec. 1, Syuecheng Road; Dashu District; Kaohsiung City; 84001; Taiwan, R.O.C.