Yih-Guang Jan This email address is being protected from spambots. You need JavaScript enabled to view it.¹, Yang-Han Lee¹, Jheng-Yao Lin¹, Hsien-Wei Tseng¹ and Ming-Hsueh Chuang¹

¹Department of Electrical Engineering, Tamkang University, Tamsui, Taiwan 251, R.O.C

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