Roland Schwerdtfeger was a Life Member of the IEEE with decades of experience in ground station design and operation, achieving global recognition as the definitive expert. Thomas Milligan has served as Principal Engineer for numerous advanced antenna design projects and NASA planetary probes. He is an IEEE Life Fellow and former longtime editor of the “Antenna Designer's Notebook” column in the IEEE Antenna Magazine. Robert Hoferer, PhD, has 30 years' experience in antenna feed systems and reflector antennas for satellite communication. A Senior Member of the IEEE, he has served since 2013 as co-founder and Chief Technology Officer for Spacetime Engineering. Christophe Granet, PhD, is an award-winning antenna engineer with over 30 years' experience, and founder of Lyrebird Antenna Research Ltd. He is a Senior Member of the IEEE and in 2001 received the H.A. Wheeler Award from the IEEE Antennas and Propagation Society.