1. Department of Electrical and Computer Engineering, Texas Tech University 1 , Lubbock, Texas 79409, USA
2. School of Nuclear Engineering, Purdue University 2 , West Lafayette, Indiana 47907, USA
3. Elmore Family School of Electrical and Computer Engineering 3 , West Lafayette, Indiana 47907, USA
4. Department of Agricultural and Biological Engineering 4 , West Lafayette, Indiana 47907, USA