1. Department of Electrical and Computer EngineeringUniversity of Illinois at Urbana‐Champaign306 N. Wright StreetUrbanaIL61801USA
2. NASA John H. Glenn Research Center21000 Brookpark RoadClevelandOH44135USA
3. PC Krause & Associates, Inc.3000 Kent Avenue, Suite C1‐100W. LafayetteIN47906USA