David A. Hill is a Guest Researcher at the National Institute of Standards and Technology (NIST) specializing in cavity theory and reverberation chamber applications. Previously, he held project leader positions with the Institute for Telecommunication Sciences and NIST. Since 1980, he has been an Adjunct Professor in the Department of Electrical and Computer Engineering at the University of Colorado at Boulder, where he teaches graduate courses in electromagnetics and advises graduate students on master's and PhD theses. Dr. Hill is an IEEE Life Fellow and a member of URSI Commissions A, B, E, and F. He has won IEEE EMC Society Prize Paper Awards for "Out-of-Band Response of Antenna Arrays" in 1987 and "On Determining the Maximum Emissions from Electrically Large Sources" in 2002.